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Yuwen Xiong
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# FlashInternImage for Semantic Segmentation
This folder contains the implementation of the InternImage for semantic segmentation.
Our segmentation code is developed on top of [MMSegmentation v0.27.0](https://github.com/open-mmlab/mmsegmentation/tree/v0.27.0).
## Usage
### Install
- Clone this repo:
```bash
git clone https://github.com/OpenGVLab/DCNv4.git
cd DCNv4
```
- Create a conda virtual environment and activate it:
```bash
conda create -n dcnv4 python=3.7 -y
conda activate dcnv4
```
- Install `CUDA>=10.2` with `cudnn>=7` following
the [official installation instructions](https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html)
- Install `PyTorch>=1.10.0` and `torchvision>=0.9.0` with `CUDA>=10.2`:
For examples, to install torch==1.11 with CUDA==11.3 and nvcc:
```bash
conda install pytorch==1.11.0 torchvision==0.12.0 torchaudio==0.11.0 cudatoolkit=11.3 -c pytorch -y
conda install -c conda-forge cudatoolkit-dev=11.3 -y # to install nvcc
```
- Install other requirements:
note: conda opencv will break torchvision as not to support GPU, so we need to install opencv using pip.
```bash
conda install -c conda-forge termcolor yacs pyyaml scipy pip -y
pip install opencv-python
```
- Install `timm` and `mmcv-full` and `mmsegmentation':
```bash
pip install -U openmim
mim install mmcv-full==1.5.0
mim install mmsegmentation==0.27.0
pip install timm==0.6.11 mmdet==2.28.1
```
- Install DCNv4
```bash
pip install DCNv4
```
### Data Preparation
Prepare datasets according to the [guidelines](https://github.com/open-mmlab/mmsegmentation/blob/master/docs/en/dataset_prepare.md#prepare-datasets) in MMSegmentation.
### Evaluation
To evaluate our `FlashInternImage` on ADE20K val, run:
```bash
sh dist_test.sh <config-file> <checkpoint> <gpu-num> --eval mIoU
```
You can download checkpoint files from [here](https://huggingface.co/OpenGVLab/DCNv4). Then place it to segmentation/checkpoint_dir/seg.
For example, to evaluate the `FlashInternImage-T` with a single GPU:
```bash
python test.py configs/ade20k/upernet_flash_internimage_t_512_160k_ade20k.py checkpoint_dir/seg/upernet_flash_internimage_t_512_160k_ade20k.pth --eval mIoU
```
For example, to evaluate the `FlashInternImage-B` with a single node with 8 GPUs:
```bash
sh dist_test.sh configs/ade20k/upernet_flash_internimage_b_512_160k_ade20k.py checkpoint_dir/seg/upernet_flash_internimage_b_512_160k_ade20k.pth 8 --eval mIoU
```
### Training
To train an `FlashInternImage` on ADE20K, run:
```bash
sh dist_train.sh <config-file> <gpu-num>
```
For example, to train `FlashInternImage-T` with 8 GPU on 1 node (total batch size 16), run:
```bash
sh dist_train.sh configs/ade20k/upernet_flash_internimage_t_512_160k_ade20k.py 8
```

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# dataset settings
dataset_type = 'ADE20KDataset'
data_root = 'data/ADEChallengeData2016'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 512)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2048, 512), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/training',
ann_dir='annotations/training',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'ADE20KDataset'
data_root = 'data/ADEChallengeData2016'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (640, 640)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2560, 640), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2560, 640),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/training',
ann_dir='annotations/training',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'ChaseDB1Dataset'
data_root = 'data/CHASE_DB1'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
img_scale = (960, 999)
crop_size = (128, 128)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=img_scale, ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=img_scale,
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img'])
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type='RepeatDataset',
times=40000,
dataset=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/training',
ann_dir='annotations/training',
pipeline=train_pipeline)),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'CityscapesDataset'
data_root = 'data/cityscapes/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 1024)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=(2048, 1024), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 1024),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=2,
workers_per_gpu=2,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='leftImg8bit/train',
ann_dir='gtFine/train',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline))

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_base_ = './cityscapes.py'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (1024, 1024)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=(2048, 1024), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 1024),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))

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# dataset settings
dataset_type = 'CityscapesDataset'
data_root = 'data/cityscapes/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 1024)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=(2048, 1024), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 1024),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=2,
workers_per_gpu=2,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir=['leftImg8bit/train', 'leftImg8bit/train_extra'],
ann_dir=['gtFine/train', 'refinement_final/train_extra'],
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'COCOStuffDataset'
data_root = 'data/coco_stuff10k'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 512)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2048, 512), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
reduce_zero_label=True,
img_dir='images/train2014',
ann_dir='annotations/train2014',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
reduce_zero_label=True,
img_dir='images/test2014',
ann_dir='annotations/test2014',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
reduce_zero_label=True,
img_dir='images/test2014',
ann_dir='annotations/test2014',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'COCOStuffDataset'
data_root = 'data/coco_stuff164k'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 512)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=(2048, 512), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/train2017',
ann_dir='annotations/train2017',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/val2017',
ann_dir='annotations/val2017',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/val2017',
ann_dir='annotations/val2017',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'DRIVEDataset'
data_root = 'data/DRIVE'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
img_scale = (584, 565)
crop_size = (64, 64)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=img_scale, ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=img_scale,
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img'])
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type='RepeatDataset',
times=40000,
dataset=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/training',
ann_dir='annotations/training',
pipeline=train_pipeline)),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'HRFDataset'
data_root = 'data/HRF'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
img_scale = (2336, 3504)
crop_size = (256, 256)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=img_scale, ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=img_scale,
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img'])
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type='RepeatDataset',
times=40000,
dataset=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/training',
ann_dir='annotations/training',
pipeline=train_pipeline)),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'LoveDADataset'
data_root = 'data/loveDA'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 512)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2048, 512), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(1024, 1024),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='img_dir/train',
ann_dir='ann_dir/train',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='img_dir/val',
ann_dir='ann_dir/val',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='img_dir/val',
ann_dir='ann_dir/val',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'MapillaryDataset'
data_root = 'data/Mapillary/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 1024)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='MapillaryHack'),
dict(type='Resize', img_scale=(2048, 1024), ratio_range=(0.5, 1.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 1024),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=2,
workers_per_gpu=2,
train=dict(
type=dataset_type,
data_root='data/Mapillary/',
img_dir=['training/images', 'validation/images'],
ann_dir=['training/labels', 'validation/labels'],
pipeline=train_pipeline),
val=dict(
type='CityscapesDataset',
data_root='data/cityscapes/',
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline),
test=dict(
type='CityscapesDataset',
data_root='data/cityscapes/',
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'MapillaryDataset'
data_root = 'data/Mapillary/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (1024, 1024)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='MapillaryHack'),
dict(type='Resize', img_scale=(2048, 1024), ratio_range=(0.5, 1.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 1024),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=2,
workers_per_gpu=2,
train=dict(
type=dataset_type,
data_root='data/Mapillary/',
img_dir=['training/images', 'validation/images'],
ann_dir=['training/labels', 'validation/labels'],
pipeline=train_pipeline),
val=dict(
type='CityscapesDataset',
data_root='data/cityscapes/',
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline),
test=dict(
type='CityscapesDataset',
data_root='data/cityscapes/',
img_dir='leftImg8bit/val',
ann_dir='gtFine/val',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'NYUDepthV2Dataset'
data_root = 'data/nyu_depth_v2/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (480, 480)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(640, 480), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(640, 480),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='image',
ann_dir='label40',
split='train.txt',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='image',
ann_dir='label40',
split='test.txt',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='image',
ann_dir='label40',
split='test.txt',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'PascalContextDataset'
data_root = 'data/VOCdevkit/VOC2010/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
img_scale = (520, 520)
crop_size = (480, 480)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=img_scale, ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=img_scale,
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClassContext',
split='ImageSets/SegmentationContext/train.txt',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClassContext',
split='ImageSets/SegmentationContext/val.txt',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClassContext',
split='ImageSets/SegmentationContext/val.txt',
pipeline=test_pipeline))

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# dataset settings
dataset_type = 'PascalContextDataset59'
data_root = 'data/VOCdevkit/VOC2010/'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
img_scale = (520, 520)
crop_size = (480, 480)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=img_scale, ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=img_scale,
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClassContext',
split='ImageSets/SegmentationContext/train.txt',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClassContext',
split='ImageSets/SegmentationContext/val.txt',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClassContext',
split='ImageSets/SegmentationContext/val.txt',
pipeline=test_pipeline))

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@@ -0,0 +1,57 @@
# dataset settings
dataset_type = 'PascalVOCDataset'
data_root = 'data/VOCdevkit/VOC2012'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 512)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=(2048, 512), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClass',
split='ImageSets/Segmentation/train.txt',
pipeline=train_pipeline),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClass',
split='ImageSets/Segmentation/val.txt',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='JPEGImages',
ann_dir='SegmentationClass',
split='ImageSets/Segmentation/val.txt',
pipeline=test_pipeline))

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@@ -0,0 +1,9 @@
_base_ = './pascal_voc12.py'
# dataset settings
data = dict(
train=dict(
ann_dir=['SegmentationClass', 'SegmentationClassAug'],
split=[
'ImageSets/Segmentation/train.txt',
'ImageSets/Segmentation/aug.txt'
]))

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# dataset settings
dataset_type = 'STAREDataset'
data_root = 'data/STARE'
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
img_scale = (605, 700)
crop_size = (128, 128)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations'),
dict(type='Resize', img_scale=img_scale, ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=img_scale,
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img'])
])
]
data = dict(
samples_per_gpu=4,
workers_per_gpu=4,
train=dict(
type='RepeatDataset',
times=40000,
dataset=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/training',
ann_dir='annotations/training',
pipeline=train_pipeline)),
val=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline),
test=dict(
type=dataset_type,
data_root=data_root,
img_dir='images/validation',
ann_dir='annotations/validation',
pipeline=test_pipeline))

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@@ -0,0 +1,14 @@
# yapf:disable
log_config = dict(
interval=50,
hooks=[
dict(type='TextLoggerHook', by_epoch=False),
# dict(type='TensorboardLoggerHook')
])
# yapf:enable
dist_params = dict(backend='nccl')
log_level = 'INFO'
load_from = None
resume_from = None
workflow = [('train', 1)]
cudnn_benchmark = True

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@@ -0,0 +1,138 @@
# model_cfg
num_things_classes = 100
num_stuff_classes = 50
num_classes = num_things_classes + num_stuff_classes
norm_cfg = dict(type='SyncBN', requires_grad=True)
model = dict(
type='EncoderDecoderMask2Former',
pretrained=None,
backbone=dict(
type='XCiT',
patch_size=16,
embed_dim=384,
depth=12,
num_heads=8,
mlp_ratio=4,
qkv_bias=True,
use_abs_pos_emb=True,
use_rel_pos_bias=False,
),
decode_head=dict(
type='Mask2FormerHead',
in_channels=[256, 512, 1024, 2048], # pass to pixel_decoder inside
# strides=[4, 8, 16, 32],
feat_channels=256,
out_channels=256,
in_index=[0, 1, 2, 3],
num_things_classes=num_things_classes,
num_stuff_classes=num_stuff_classes,
num_queries=100,
num_transformer_feat_level=3,
pixel_decoder=dict(
type='MSDeformAttnPixelDecoder',
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='MultiScaleDeformableAttention',
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
ffn_cfgs=dict(
type='FFN',
embed_dims=256,
feedforward_channels=1024,
num_fcs=2,
ffn_drop=0.0,
act_cfg=dict(type='ReLU', inplace=True)),
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
init_cfg=None),
enforce_decoder_input_project=False,
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
transformer_decoder=dict(
type='DetrTransformerDecoder',
return_intermediate=True,
num_layers=9,
transformerlayers=dict(
type='DetrTransformerDecoderLayer',
attn_cfgs=dict(
type='MultiheadAttention',
embed_dims=256,
num_heads=8,
attn_drop=0.0,
proj_drop=0.0,
dropout_layer=None,
batch_first=False),
ffn_cfgs=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
act_cfg=dict(type='ReLU', inplace=True),
ffn_drop=0.0,
dropout_layer=None,
add_identity=True),
feedforward_channels=2048,
operation_order=('cross_attn', 'norm', 'self_attn', 'norm',
'ffn', 'norm')),
init_cfg=None),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=2.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1]),
loss_mask=dict(
type='CrossEntropyLoss',
use_sigmoid=True,
reduction='mean',
loss_weight=5.0),
loss_dice=dict(
type='DiceLoss',
use_sigmoid=True,
activate=True,
reduction='mean',
naive_dice=True,
eps=1.0,
loss_weight=5.0)),
train_cfg=dict(
num_points=12544,
oversample_ratio=3.0,
importance_sample_ratio=0.75,
assigner=dict(
type='MaskHungarianAssigner',
cls_cost=dict(type='ClassificationCost', weight=2.0),
mask_cost=dict(
type='CrossEntropyLossCost', weight=5.0, use_sigmoid=True),
dice_cost=dict(
type='DiceCost', weight=5.0, pred_act=True, eps=1.0)),
sampler=dict(type='MaskPseudoSampler')),
test_cfg=dict(
panoptic_on=True,
# For now, the dataset does not support
# evaluating semantic segmentation metric.
semantic_on=False,
instance_on=True,
# max_per_image is for instance segmentation.
max_per_image=100,
iou_thr=0.8,
# In Mask2Former's panoptic postprocessing,
# it will filter mask area where score is less than 0.5 .
filter_low_score=True),
init_cfg=None)
# find_unused_parameters = True

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@@ -0,0 +1,34 @@
# model settings
norm_cfg = dict(type='SyncBN', requires_grad=True)
model = dict(
type='EncoderDecoder',
pretrained=None,
backbone=dict(
type='MixVisionTransformer',
in_channels=3,
embed_dims=32,
num_stages=4,
num_layers=[2, 2, 2, 2],
num_heads=[1, 2, 5, 8],
patch_sizes=[7, 3, 3, 3],
sr_ratios=[8, 4, 2, 1],
out_indices=(0, 1, 2, 3),
mlp_ratio=4,
qkv_bias=True,
drop_rate=0.0,
attn_drop_rate=0.0,
drop_path_rate=0.1),
decode_head=dict(
type='SegformerHead',
in_channels=[32, 64, 160, 256],
in_index=[0, 1, 2, 3],
channels=256,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0)),
# model training and testing settings
train_cfg=dict(),
test_cfg=dict(mode='whole'))

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@@ -0,0 +1,46 @@
norm_cfg = dict(type='SyncBN', requires_grad=True)
custom_imports = dict(imports='mmcls.models', allow_failed_imports=False)
# checkpoint_file = 'https://download.openmmlab.com/mmclassification/v0/convnext/downstream/convnext-base_3rdparty_32xb128-noema_in1k_20220301-2a0ee547.pth' # noqa
model = dict(
type='EncoderDecoder',
pretrained=None,
backbone=dict(
type='mmcls.ConvNeXt',
arch='base',
norm_cfg=dict(type='LN2dv2', eps=1e-6),
out_indices=[0, 1, 2, 3],
drop_path_rate=0.4,
layer_scale_init_value=1.0,
gap_before_final_norm=False,
# init_cfg=dict(
# type='Pretrained', checkpoint=checkpoint_file,
# prefix='backbone.')
),
decode_head=dict(
type='UPerHead',
in_channels=[128, 256, 512, 1024],
in_index=[0, 1, 2, 3],
pool_scales=(1, 2, 3, 6),
channels=512,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0)),
auxiliary_head=dict(
type='FCNHead',
in_channels=384,
in_index=2,
channels=256,
num_convs=1,
concat_input=False,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=0.4)),
# model training and testing settings
train_cfg=dict(),
test_cfg=dict(mode='whole'))

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# model settings
norm_cfg = dict(type='SyncBN', requires_grad=True)
model = dict(
type='EncoderDecoder',
pretrained='open-mmlab://resnet50_v1c',
backbone=dict(
type='ResNetV1c',
depth=50,
num_stages=4,
out_indices=(0, 1, 2, 3),
dilations=(1, 1, 1, 1),
strides=(1, 2, 2, 2),
norm_cfg=norm_cfg,
norm_eval=False,
style='pytorch',
contract_dilation=True),
decode_head=dict(
type='UPerHead',
in_channels=[256, 512, 1024, 2048],
in_index=[0, 1, 2, 3],
pool_scales=(1, 2, 3, 6),
channels=512,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0)),
auxiliary_head=dict(
type='FCNHead',
in_channels=1024,
in_index=2,
channels=256,
num_convs=1,
concat_input=False,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=0.4)),
# model training and testing settings
train_cfg=dict(),
test_cfg=dict(mode='whole'))

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# model settings
norm_cfg = dict(type='SyncBN', requires_grad=True)
backbone_norm_cfg = dict(type='LN', requires_grad=True)
model = dict(
type='EncoderDecoder',
pretrained=None,
backbone=dict(
type='SwinTransformer',
pretrain_img_size=224,
embed_dims=96,
patch_size=4,
window_size=7,
mlp_ratio=4,
depths=[2, 2, 6, 2],
num_heads=[3, 6, 12, 24],
strides=(4, 2, 2, 2),
out_indices=(0, 1, 2, 3),
qkv_bias=True,
qk_scale=None,
patch_norm=True,
drop_rate=0.,
attn_drop_rate=0.,
drop_path_rate=0.3,
use_abs_pos_embed=False,
act_cfg=dict(type='GELU'),
norm_cfg=backbone_norm_cfg),
decode_head=dict(
type='UPerHead',
in_channels=[96, 192, 384, 768],
in_index=[0, 1, 2, 3],
pool_scales=(1, 2, 3, 6),
channels=512,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0)),
auxiliary_head=dict(
type='FCNHead',
in_channels=384,
in_index=2,
channels=256,
num_convs=1,
concat_input=False,
dropout_ratio=0.1,
num_classes=19,
norm_cfg=norm_cfg,
align_corners=False,
loss_decode=dict(
type='CrossEntropyLoss', use_sigmoid=False, loss_weight=0.4)),
# model training and testing settings
train_cfg=dict(),
test_cfg=dict(mode='whole'))

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# optimizer
optimizer = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer_config = dict()
# learning policy
lr_config = dict(policy='poly', power=0.9, min_lr=1e-4, by_epoch=False)
# runtime settings
runner = dict(type='IterBasedRunner', max_iters=160000)
checkpoint_config = dict(by_epoch=False, interval=16000)
evaluation = dict(interval=16000, metric='mIoU', pre_eval=True)

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# optimizer
optimizer = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer_config = dict()
# learning policy
lr_config = dict(policy='poly', power=0.9, min_lr=1e-4, by_epoch=False)
# runtime settings
runner = dict(type='IterBasedRunner', max_iters=20000)
checkpoint_config = dict(by_epoch=False, interval=2000)
evaluation = dict(interval=2000, metric='mIoU', pre_eval=True)

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# optimizer
optimizer = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer_config = dict()
# learning policy
lr_config = dict(policy='poly', power=0.9, min_lr=1e-4, by_epoch=False)
# runtime settings
runner = dict(type='IterBasedRunner', max_iters=320000)
checkpoint_config = dict(by_epoch=False, interval=32000)
evaluation = dict(interval=32000, metric='mIoU')

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# optimizer
optimizer = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer_config = dict()
# learning policy
lr_config = dict(policy='poly', power=0.9, min_lr=1e-4, by_epoch=False)
# runtime settings
runner = dict(type='IterBasedRunner', max_iters=40000)
checkpoint_config = dict(by_epoch=False, interval=4000)
evaluation = dict(interval=4000, metric='mIoU', pre_eval=True)

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# optimizer
optimizer = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer_config = dict()
# learning policy
lr_config = dict(policy='poly', power=0.9, min_lr=1e-4, by_epoch=False)
# runtime settings
runner = dict(type='IterBasedRunner', max_iters=80000)
checkpoint_config = dict(by_epoch=False, interval=8000)
evaluation = dict(interval=8000, metric='mIoU', pre_eval=True)

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# ADE20K
Introduced by Zhou et al. in [Scene Parsing Through ADE20K Dataset](https://paperswithcode.com/paper/scene-parsing-through-ade20k-dataset).
The ADE20K semantic segmentation dataset contains more than 20K scene-centric images exhaustively annotated with pixel-level objects and object parts labels. There are totally 150 semantic categories, which include stuffs like sky, road, grass, and discrete objects like person, car, bed.
## Model Zoo
### UperNet + InternImage
| backbone | resolution | mIoU (ss/ms) | Config | Download |
|:--------------:|:----------:|:-----------:|:-----------:|:----------:
| FlashInternImage-T | 512x512 | 49.3 / 50.3 | [config](./upernet_flash_internimage_t_512_160k_ade20k.py) | [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_t_512_160k_ade20k.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_t_512_160k_ade20k.log) |
| FlashInternImage-S | 512x512 | 50.6 / 51.6 | [config](./upernet_flash_internimage_s_512_160k_ade20k.py) | [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_s_512_160k_ade20k.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_s_512_160k_ade20k.log) |
| FlashInternImage-B | 512x512 | 52.0 / 52.6 | [config](./upernet_flash_internimage_b_512_160k_ade20k.py) | [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_b_512_160k_ade20k.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_s_512_160k_ade20k.log) |
| FlashInternImage-L | 640x640 | 55.6 / 56.0 | [config](./upernet_flash_internimage_l_640_160k_ade20k.py)| [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_l_640_160k_ade20k.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/upernet_flash_internimage_l_640_160k_ade20k.log) |
- Training speed is measured with A100 GPU.
- Please set `with_cp=True` to save memory if you meet `out-of-memory` issues.
- The logs are our recent newly trained ones. There are slight differences between the results in logs and our paper.
### Mask2Former + InternImage
| backbone | resolution | mIoU (ss) | Config | Download |
|:--------------:|:----------:|:-----------:|:-----------:|:----------:
| FlashInternImage-T | 512x512 | 51.2 | [config](./mask2former_flash_internimage_t_512_160k_ade20k_ss.py) | [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_t_512_160k_ade20k_ss.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_t_512_160k_ade20k_ss.log) |
| FlashInternImage-S | 640x640 | 52.2 | [config](./mask2former_flash_internimage_s_640_160k_ade20k_ss.py) | [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_s_640_160k_ade20k_ss.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_s_640_160k_ade20k_ss.log) |
| FlashInternImage-B | 640x640 | 53.4 | [config](./mask2former_flash_internimage_b_640_160k_ade20k_ss.py) | [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_b_640_160k_ade20k_ss.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_b_640_160k_ade20k_ss.log) |
| FlashInternImage-L | 640x640 | 56.7 | [config](./mask2former_flash_internimage_l_640_160k_ade20k_ss.py)| [ckpt](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_l_640_160k_ade20k_ss.pth) \| [log](https://huggingface.co/OpenGVLab/DCNv4/resolve/main/mask2former_flash_internimage_l_640_160k_ade20k_ss.log) |

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/mask2former_beit.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
num_classes = 150
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_b_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=112,
depths=[4, 4, 21, 4],
groups=[7, 14, 28, 56],
mlp_ratio=4.,
drop_path_rate=0.4,
norm_layer='LN',
layer_scale=1.0,
offset_scale=0.5,
post_norm=True,
with_cp=False,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(
in_channels=[112, 224, 448, 896],
feat_channels=256,
out_channels=256,
num_classes=num_classes,
num_queries=200,
pixel_decoder=dict(
type='MSDeformAttnPixelDecoder',
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='MultiScaleDeformableAttention',
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
ffn_cfgs=dict(
type='FFN',
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
ffn_drop=0.0,
with_cp=False, # set with_cp=True to save memory
act_cfg=dict(type='ReLU', inplace=True)),
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
transformer_decoder=dict(
type='DetrTransformerDecoder',
return_intermediate=True,
num_layers=9,
transformerlayers=dict(
type='DetrTransformerDecoderLayer',
attn_cfgs=dict(
type='MultiheadAttention',
embed_dims=256,
num_heads=8,
attn_drop=0.0,
proj_drop=0.0,
dropout_layer=None,
batch_first=False),
ffn_cfgs=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
act_cfg=dict(type='ReLU', inplace=True),
ffn_drop=0.0,
dropout_layer=None,
with_cp=False, # set with_cp=True to save memory
add_identity=True),
feedforward_channels=2048,
operation_order=('cross_attn', 'norm', 'self_attn', 'norm',
'ffn', 'norm')),
init_cfg=None),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=2.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1])
),
test_cfg=dict(mode='whole'))
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (640, 640)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2560, 640), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='ToMask'),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg', 'gt_masks', 'gt_labels'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2560, 640),
# img_ratios=[768./896., 832./896., 1.0, 960./896., 1024./896.],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.0001, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=33, layer_decay_rate=1.0,
depths=[4, 4, 21, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data = dict(samples_per_gpu=2,
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
optimizer_config = dict(_delete_=True, grad_clip=dict(max_norm=0.1, norm_type=2))
checkpoint_config = dict(by_epoch=False, interval=5000, max_keep_ckpts=1)
evaluation = dict(interval=5000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/mask2former_beit.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
num_classes = 150
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_l_22k_384.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=160,
depths=[5, 5, 22, 5],
groups=[10, 20, 40, 80],
mlp_ratio=4.,
drop_path_rate=0.5,
norm_layer='LN',
layer_scale=1.0,
offset_scale=2.0,
post_norm=True,
with_cp=True,
dcn_output_bias=True,
mlp_fc2_bias=True,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(
in_channels=[160, 320, 640, 1280],
feat_channels=256,
out_channels=256,
num_classes=num_classes,
num_queries=200,
pixel_decoder=dict(
type='MSDeformAttnPixelDecoder',
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='MultiScaleDeformableAttention',
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
ffn_cfgs=dict(
type='FFN',
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
ffn_drop=0.0,
with_cp=False, # set with_cp=True to save memory
act_cfg=dict(type='ReLU', inplace=True)),
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
transformer_decoder=dict(
type='DetrTransformerDecoder',
return_intermediate=True,
num_layers=9,
transformerlayers=dict(
type='DetrTransformerDecoderLayer',
attn_cfgs=dict(
type='MultiheadAttention',
embed_dims=256,
num_heads=8,
attn_drop=0.0,
proj_drop=0.0,
dropout_layer=None,
batch_first=False),
ffn_cfgs=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
act_cfg=dict(type='ReLU', inplace=True),
ffn_drop=0.0,
dropout_layer=None,
with_cp=False, # set with_cp=True to save memory
add_identity=True),
feedforward_channels=2048,
operation_order=('cross_attn', 'norm', 'self_attn', 'norm',
'ffn', 'norm')),
init_cfg=None),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=2.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1])
),
test_cfg=dict(mode='whole'))
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (640, 640)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2560, 640), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='ToMask'),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg', 'gt_masks', 'gt_labels'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2560, 640),
# img_ratios=[768./896., 832./896., 1.0, 960./896., 1024./896.],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.0001, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=37, layer_decay_rate=0.94,
depths=[5, 5, 22, 5], offset_lr_scale=1.0))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data = dict(samples_per_gpu=2,
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
optimizer_config = dict(_delete_=True, grad_clip=dict(max_norm=0.1, norm_type=2))
checkpoint_config = dict(by_epoch=False, interval=2000, max_keep_ckpts=1)
evaluation = dict(interval=2000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/mask2former_beit.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
num_classes = 150
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_s_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=80,
depths=[4, 4, 21, 4],
groups=[5, 10, 20, 40],
mlp_ratio=4.,
drop_path_rate=0.3,
norm_layer='LN',
layer_scale=1.0,
offset_scale=1.0,
post_norm=True,
with_cp=False,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(
in_channels=[80, 160, 320, 640],
feat_channels=256,
out_channels=256,
num_classes=num_classes,
num_queries=200,
pixel_decoder=dict(
type='MSDeformAttnPixelDecoder',
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='MultiScaleDeformableAttention',
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
ffn_cfgs=dict(
type='FFN',
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
ffn_drop=0.0,
with_cp=False, # set with_cp=True to save memory
act_cfg=dict(type='ReLU', inplace=True)),
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
transformer_decoder=dict(
type='DetrTransformerDecoder',
return_intermediate=True,
num_layers=9,
transformerlayers=dict(
type='DetrTransformerDecoderLayer',
attn_cfgs=dict(
type='MultiheadAttention',
embed_dims=256,
num_heads=8,
attn_drop=0.0,
proj_drop=0.0,
dropout_layer=None,
batch_first=False),
ffn_cfgs=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
act_cfg=dict(type='ReLU', inplace=True),
ffn_drop=0.0,
dropout_layer=None,
with_cp=False, # set with_cp=True to save memory
add_identity=True),
feedforward_channels=2048,
operation_order=('cross_attn', 'norm', 'self_attn', 'norm',
'ffn', 'norm')),
init_cfg=None),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=2.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1])
),
test_cfg=dict(mode='whole'))
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (640, 640)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2560, 640), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='ToMask'),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg', 'gt_masks', 'gt_labels'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2560, 640),
# img_ratios=[768./896., 832./896., 1.0, 960./896., 1024./896.],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.0001, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=33, layer_decay_rate=1.0,
depths=[4, 4, 21, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data = dict(samples_per_gpu=2,
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
optimizer_config = dict(_delete_=True, grad_clip=dict(max_norm=0.1, norm_type=2))
checkpoint_config = dict(by_epoch=False, interval=5000, max_keep_ckpts=1)
evaluation = dict(interval=5000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/mask2former_beit.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
num_classes = 150
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_s_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=80,
depths=[4, 4, 21, 4],
groups=[5, 10, 20, 40],
mlp_ratio=4.,
drop_path_rate=0.3,
norm_layer='LN',
layer_scale=1.0,
offset_scale=1.0,
post_norm=True,
with_cp=False,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(
in_channels=[80, 160, 320, 640],
feat_channels=256,
out_channels=256,
num_classes=num_classes,
num_queries=200,
pixel_decoder=dict(
type='MSDeformAttnPixelDecoder',
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='CustomMultiScaleDeformableAttention',
use_softmax=False,
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
ffn_cfgs=dict(
type='FFN',
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
ffn_drop=0.0,
with_cp=False, # set with_cp=True to save memory
act_cfg=dict(type='ReLU', inplace=True)),
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
transformer_decoder=dict(
type='DetrTransformerDecoder',
return_intermediate=True,
num_layers=9,
transformerlayers=dict(
type='DetrTransformerDecoderLayer',
attn_cfgs=dict(
type='MultiheadAttention',
embed_dims=256,
num_heads=8,
attn_drop=0.0,
proj_drop=0.0,
dropout_layer=None,
batch_first=False),
ffn_cfgs=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
act_cfg=dict(type='ReLU', inplace=True),
ffn_drop=0.0,
dropout_layer=None,
with_cp=False, # set with_cp=True to save memory
add_identity=True),
feedforward_channels=2048,
operation_order=('cross_attn', 'norm', 'self_attn', 'norm',
'ffn', 'norm')),
init_cfg=None),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=2.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1])
),
test_cfg=dict(mode='whole'))
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (640, 640)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2560, 640), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='ToMask'),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg', 'gt_masks', 'gt_labels'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2560, 640),
# img_ratios=[768./896., 832./896., 1.0, 960./896., 1024./896.],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.0001, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=33, layer_decay_rate=1.0,
depths=[4, 4, 21, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data = dict(samples_per_gpu=2,
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
optimizer_config = dict(_delete_=True, grad_clip=dict(max_norm=0.1, norm_type=2))
checkpoint_config = dict(by_epoch=False, interval=5000, max_keep_ckpts=1)
evaluation = dict(interval=5000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2023 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/mask2former_beit.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
num_classes = 150
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_t_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=64,
depths=[4, 4, 18, 4],
groups=[4, 8, 16, 32],
mlp_ratio=4.,
drop_path_rate=0.2,
norm_layer='LN',
layer_scale=1.0,
offset_scale=1.0,
post_norm=False,
with_cp=False,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(
in_channels=[64, 128, 256, 512],
feat_channels=256,
out_channels=256,
num_classes=num_classes,
num_queries=100,
pixel_decoder=dict(
type='MSDeformAttnPixelDecoder',
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='MultiScaleDeformableAttention',
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
ffn_cfgs=dict(
type='FFN',
embed_dims=256,
feedforward_channels=1024,
num_fcs=2,
ffn_drop=0.0,
with_cp=False, # set with_cp=True to save memory
act_cfg=dict(type='ReLU', inplace=True)),
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding', num_feats=128, normalize=True),
transformer_decoder=dict(
type='DetrTransformerDecoder',
return_intermediate=True,
num_layers=9,
transformerlayers=dict(
type='DetrTransformerDecoderLayer',
attn_cfgs=dict(
type='MultiheadAttention',
embed_dims=256,
num_heads=8,
attn_drop=0.0,
proj_drop=0.0,
dropout_layer=None,
batch_first=False),
ffn_cfgs=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
act_cfg=dict(type='ReLU', inplace=True),
ffn_drop=0.0,
dropout_layer=None,
with_cp=False, # set with_cp=True to save memory
add_identity=True),
feedforward_channels=2048,
operation_order=('cross_attn', 'norm', 'self_attn', 'norm',
'ffn', 'norm')),
init_cfg=None),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=2.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1])
),
test_cfg=dict(mode='whole'))
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (512, 512)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2048, 512), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='ToMask'),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg', 'gt_masks', 'gt_labels'])
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[768./896., 832./896., 1.0, 960./896., 1024./896.],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.0001, weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=30, layer_decay_rate=0.9,
depths=[4, 4, 18, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data = dict(samples_per_gpu=2,
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
optimizer_config = dict(_delete_=True, grad_clip=dict(max_norm=0.01, norm_type=2))
checkpoint_config = dict(by_epoch=False, interval=5000, max_keep_ckpts=1)
evaluation = dict(interval=5000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/upernet_r50.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_b_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=112,
depths=[4, 4, 21, 4],
groups=[7, 14, 28, 56],
mlp_ratio=4.,
drop_path_rate=0.3,
norm_layer='LN',
layer_scale=1.0,
offset_scale=0.5,
post_norm=True,
with_cp=False,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(num_classes=150, in_channels=[112, 224, 448, 896]),
auxiliary_head=dict(num_classes=150, in_channels=448),
test_cfg=dict(mode='whole')
)
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.00006, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=33, layer_decay_rate=1.0,
depths=[4, 4, 21, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data=dict(samples_per_gpu=2,
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
checkpoint_config = dict(by_epoch=False, interval=1000, max_keep_ckpts=1)
evaluation = dict(interval=16000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/upernet_r50.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_l_22k_384.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=160,
depths=[5, 5, 22, 5],
groups=[10, 20, 40, 80],
mlp_ratio=4.,
drop_path_rate=0.4,
norm_layer='LN',
layer_scale=1.0,
offset_scale=2.0,
post_norm=True,
with_cp=False,
dcn_output_bias=True,
mlp_fc2_bias=True,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(num_classes=150, in_channels=[160, 320, 640, 1280]),
auxiliary_head=dict(num_classes=150, in_channels=640),
test_cfg=dict(mode='whole'))
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
crop_size = (640, 640)
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(type='LoadAnnotations', reduce_zero_label=True),
dict(type='Resize', img_scale=(2560, 640), ratio_range=(0.5, 2.0)),
dict(type='RandomCrop', crop_size=crop_size, cat_max_ratio=0.75),
dict(type='RandomFlip', prob=0.5),
dict(type='PhotoMetricDistortion'),
dict(type='Normalize', **img_norm_cfg),
dict(type='Pad', size=crop_size, pad_val=0, seg_pad_val=255),
dict(type='DefaultFormatBundle'),
dict(type='Collect', keys=['img', 'gt_semantic_seg']),
]
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2560, 640),
# img_ratios=[0.75, 1.0, 1.25],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.00002, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=37, layer_decay_rate=0.94,
depths=[5, 5, 22, 5], offset_lr_scale=1.0))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data = dict(samples_per_gpu=2,
train=dict(pipeline=train_pipeline),
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
optimizer_config = dict(_delete_=True, grad_clip=dict(max_norm=0.1, norm_type=2))
checkpoint_config = dict(by_epoch=False, interval=1000, max_keep_ckpts=1)
evaluation = dict(interval=16000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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@@ -0,0 +1,68 @@
# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/upernet_r50.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_s_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=80,
depths=[4, 4, 21, 4],
groups=[5, 10, 20, 40],
mlp_ratio=4.,
drop_path_rate=0.3,
norm_layer='LN',
layer_scale=1.0,
offset_scale=1.0,
post_norm=True,
with_cp=True,
dw_kernel_size=3,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(num_classes=150, in_channels=[80, 160, 320, 640]),
auxiliary_head=dict(num_classes=150, in_channels=320),
test_cfg=dict(mode='whole')
)
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.00006, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=33, layer_decay_rate=1.0,
depths=[4, 4, 21, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data=dict(samples_per_gpu=2,
val=dict(pipeline=test_pipeline),
test=dict(pipeline=test_pipeline))
runner = dict(type='IterBasedRunner')
checkpoint_config = dict(by_epoch=False, interval=1000, max_keep_ckpts=1)
evaluation = dict(interval=16000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
_base_ = [
'../_base_/models/upernet_r50.py', '../_base_/datasets/ade20k.py',
'../_base_/default_runtime.py', '../_base_/schedules/schedule_160k.py'
]
pretrained = 'https://huggingface.co/OpenGVLab/DCNv4/resolve/main/flash_intern_image_t_1k_224.pth'
model = dict(
backbone=dict(
_delete_=True,
type='FlashInternImage',
core_op='DCNv4',
channels=64,
depths=[4, 4, 18, 4],
groups=[4, 8, 16, 32],
mlp_ratio=4.,
drop_path_rate=0.2,
norm_layer='LN',
layer_scale=1.0,
offset_scale=1.0,
post_norm=False,
with_cp=True,
out_indices=(0, 1, 2, 3),
init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
decode_head=dict(num_classes=150, in_channels=[64, 128, 256, 512]),
auxiliary_head=dict(num_classes=150, in_channels=256),
test_cfg=dict(mode='whole')
)
img_norm_cfg = dict(
mean=[123.675, 116.28, 103.53], std=[58.395, 57.12, 57.375], to_rgb=True)
test_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='MultiScaleFlipAug',
img_scale=(2048, 512),
# img_ratios=[0.5, 0.75, 1.0, 1.25, 1.5, 1.75],
flip=False,
transforms=[
dict(type='Resize', keep_ratio=True),
dict(type='ResizeToMultiple', size_divisor=32),
dict(type='RandomFlip'),
dict(type='Normalize', **img_norm_cfg),
dict(type='ImageToTensor', keys=['img']),
dict(type='Collect', keys=['img']),
])
]
optimizer = dict(
_delete_=True, type='AdamW', lr=0.00006, betas=(0.9, 0.999), weight_decay=0.05,
constructor='CustomLayerDecayOptimizerConstructor',
paramwise_cfg=dict(num_layers=30, layer_decay_rate=1.0,
depths=[4, 4, 18, 4]))
lr_config = dict(_delete_=True, policy='poly',
warmup='linear',
warmup_iters=1500,
warmup_ratio=1e-6,
power=1.0, min_lr=0.0, by_epoch=False)
# By default, models are trained on 8 GPUs with 2 images per GPU
data=dict(samples_per_gpu=2,
# val=dict(pipeline=test_pipeline),
# test=dict(pipeline=test_pipeline)
)
runner = dict(type='IterBasedRunner')
checkpoint_config = dict(by_epoch=False, interval=1000, max_keep_ckpts=1)
evaluation = dict(interval=16000, metric='mIoU', save_best='mIoU')
# fp16 = dict(loss_scale=dict(init_scale=512))

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backend_config = dict(
type='tensorrt', common_config=dict(fp16_mode=False, max_workspace_size=0))

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onnx_config = dict(
type='onnx',
export_params=True,
keep_initializers_as_inputs=False,
opset_version=11,
save_file='end2end.onnx',
input_names=['input'],
output_names=['output'],
input_shape=None,
optimize=True)

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_base_ = ['../_base_/onnx_config.py']
codebase_config = dict(type='mmseg', task='Segmentation', with_argmax=True)

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_base_ = ['./segmentation_static.py', '../_base_/backends/tensorrt.py']
onnx_config = dict(input_shape=[512, 512])
backend_config = dict(
common_config=dict(max_workspace_size=1 << 30),
model_inputs=[
dict(
input_shapes=dict(
input=dict(
min_shape=[1, 3, 512, 512],
opt_shape=[1, 3, 512, 512],
max_shape=[1, 3, 512, 512])))
])

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9
segmentation/dist_test.sh Executable file
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#!/usr/bin/env bash
CONFIG=$1
CHECKPOINT=$2
GPUS=$3
PORT=${PORT:-29510}
PYTHONPATH="$(dirname $0)/..":$PYTHONPATH \
python -m torch.distributed.launch --nproc_per_node=$GPUS --master_port=$PORT \
$(dirname "$0")/test.py $CONFIG $CHECKPOINT --launcher pytorch ${@:4}

9
segmentation/dist_train.sh Executable file
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#!/usr/bin/env bash
CONFIG=$1
GPUS=$2
PORT=${PORT:-29300}
PYTHONPATH="$(dirname $0)/..":$PYTHONPATH \
python -m torch.distributed.launch --nproc_per_node=$GPUS --master_port=$PORT \
$(dirname "$0")/train.py $CONFIG --launcher pytorch ${@:3}

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segmentation/get_flops.py Normal file
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# Copyright (c) OpenMMLab. All rights reserved.
import argparse
import numpy as np
import torch
from mmcv import Config, DictAction
from mmseg.models import build_segmentor
import mmcv_custom # noqa: F401,F403
import mmseg_custom # noqa: F401,F403
try:
from mmcv.cnn.utils.flops_counter import flops_to_string, params_to_string
from mmcv.cnn import get_model_complexity_info
except ImportError:
raise ImportError('Please upgrade mmcv to >0.6.2')
def parse_args():
parser = argparse.ArgumentParser(description='Train a detector')
parser.add_argument('config', help='train config file path')
parser.add_argument(
'--shape',
type=int,
nargs='+',
default=[512, 2048],
help='input image size')
parser.add_argument(
'--cfg-options',
nargs='+',
action=DictAction,
help='override some settings in the used config, the key-value pair '
'in xxx=yyy format will be merged into config file. If the value to '
'be overwritten is a list, it should be like key="[a,b]" or key=a,b '
'It also allows nested list/tuple values, e.g. key="[(a,b),(c,d)]" '
'Note that the quotation marks are necessary and that no white space '
'is allowed.')
parser.add_argument(
'--size-divisor',
type=int,
default=32,
help='Pad the input image, the minimum size that is divisible '
'by size_divisor, -1 means do not pad the image.')
args = parser.parse_args()
return args
# dcnv3_flops(n=h*w, k=3*3, c=channels)
def dcnv3_flops(n, k, c):
return 5 * n * k * c
def get_flops(model, input_shape):
flops, params = get_model_complexity_info(model, input_shape, as_strings=False)
backbone = model.backbone
backbone_name = type(backbone).__name__
_, H, W = input_shape
temp = 0
if 'Intern' in backbone_name:
depths = backbone.depths # [4, 4, 18, 4]
for idx, depth in enumerate(depths):
channels = backbone.channels * (2 ** idx)
h = H / (4 * (2 ** idx))
w = W / (4 * (2 ** idx))
temp += depth * dcnv3_flops(n=h*w, k=3*3, c=channels)
flops = flops + temp
return flops_to_string(flops), params_to_string(params)
if __name__ == '__main__':
args = parse_args()
if len(args.shape) == 1:
h = w = args.shape[0]
elif len(args.shape) == 2:
h, w = args.shape
else:
raise ValueError('invalid input shape')
orig_shape = (3, h, w)
divisor = args.size_divisor
if divisor > 0:
h = int(np.ceil(h / divisor)) * divisor
w = int(np.ceil(w / divisor)) * divisor
input_shape = (3, h, w)
cfg = Config.fromfile(args.config)
if args.cfg_options is not None:
cfg.merge_from_dict(args.cfg_options)
model = build_segmentor(
cfg.model,
train_cfg=cfg.get('train_cfg'),
test_cfg=cfg.get('test_cfg'))
if torch.cuda.is_available():
model.cuda()
model.eval()
if hasattr(model, 'forward_dummy'):
model.forward = model.forward_dummy
else:
raise NotImplementedError(
'FLOPs counter is currently not currently supported with {}'.
format(model.__class__.__name__))
flops, params = get_flops(model, input_shape)
split_line = '=' * 30
if divisor > 0 and \
input_shape != orig_shape:
print(f'{split_line}\nUse size divisor set input shape '
f'from {orig_shape} to {input_shape}\n')
print(f'{split_line}\nInput shape: {input_shape}\n'
f'Flops: {flops}\nParams: {params}\n{split_line}')
print('!!!Please be cautious if you use the results in papers. '
'You may need to check if all ops are supported and verify that the '
'flops computation is correct.')

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# Copyright (c) OpenMMLab. All rights reserved.
from argparse import ArgumentParser
import mmcv
import mmcv_custom # noqa: F401,F403
import mmseg_custom # noqa: F401,F403
from mmseg.apis import inference_segmentor, init_segmentor, show_result_pyplot
from mmseg.core.evaluation import get_palette
from mmcv.runner import load_checkpoint
from mmseg.core import get_classes
import cv2
import os.path as osp
import os
def test_single_image(model, img_name, out_dir, color_palette, opacity):
result = inference_segmentor(model, img_name)
# show the results
if hasattr(model, 'module'):
model = model.module
img = model.show_result(img_name, result,
palette=color_palette,
show=False, opacity=opacity)
# save the results
mmcv.mkdir_or_exist(out_dir)
out_path = osp.join(out_dir, osp.basename(img_name))
cv2.imwrite(out_path, img)
print(f"Result is save at {out_path}")
def main():
parser = ArgumentParser()
parser.add_argument('img', help='Image file or a directory contains images')
parser.add_argument('config', help='Config file')
parser.add_argument('checkpoint', help='Checkpoint file')
parser.add_argument('--out', type=str, default="demo", help='out dir')
parser.add_argument(
'--device', default='cuda:0', help='Device used for inference')
parser.add_argument(
'--palette',
default='ade20k',
choices=['ade20k', 'cityscapes', 'cocostuff'],
help='Color palette used for segmentation map')
parser.add_argument(
'--opacity',
type=float,
default=0.5,
help='Opacity of painted segmentation map. In (0, 1] range.')
args = parser.parse_args()
# build the model from a config file and a checkpoint file
model = init_segmentor(args.config, checkpoint=None, device=args.device)
checkpoint = load_checkpoint(model, args.checkpoint, map_location='cpu')
if 'CLASSES' in checkpoint.get('meta', {}):
model.CLASSES = checkpoint['meta']['CLASSES']
else:
model.CLASSES = get_classes(args.palette)
# check arg.img is directory of a single image.
if osp.isdir(args.img):
for img in os.listdir(args.img):
test_single_image(model, osp.join(args.img, img), args.out, get_palette(args.palette), args.opacity)
else:
test_single_image(model, args.img, args.out, get_palette(args.palette), args.opacity)
if __name__ == '__main__':
main()

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
# -*- coding: utf-8 -*-
from .custom_layer_decay_optimizer_constructor import CustomLayerDecayOptimizerConstructor
from .layer_decay import LearningRateDecayOptimizerConstructor
from .layer_decay_vit import LayerDecayOptimizerConstructor_vit
__all__ = ['CustomLayerDecayOptimizerConstructor',]

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
"""
Mostly copy-paste from BEiT library:
https://github.com/microsoft/unilm/blob/master/beit/semantic_segmentation/mmcv_custom/layer_decay_optimizer_constructor.py
"""
import json
from mmcv.runner import OPTIMIZER_BUILDERS, DefaultOptimizerConstructor
from mmcv.runner import get_dist_info
from mmseg.utils import get_root_logger
def get_num_layer_for_swin(var_name, num_max_layer, depths):
if var_name.startswith("backbone.patch_embed"):
return 0
elif var_name.startswith('decode_head.mask_embed'):
return 0
elif var_name.startswith('decode_head.cls_embed'):
return 0
elif var_name.startswith('decode_head.level_embed'):
return 0
elif var_name.startswith('decode_head.query_embed'):
return 0
elif var_name.startswith('decode_head.query_feat'):
return 0
if var_name.startswith("backbone.cb_modules.0.patch_embed"):
return 0
elif "level_embeds" in var_name:
return 0
elif var_name.startswith("backbone.layers") or var_name.startswith(
"backbone.levels"):
if var_name.split('.')[3] not in ['downsample', 'norm']:
stage_id = int(var_name.split('.')[2])
layer_id = int(var_name.split('.')[4])
# layers for Swin-Large: [2, 2, 18, 2]
if stage_id == 0:
return layer_id + 1
elif stage_id == 1:
return layer_id + 1 + depths[0]
elif stage_id == 2:
return layer_id + 1 + depths[0] + depths[1]
else:
return layer_id + 1 + depths[0] + depths[1] + depths[2]
else:
stage_id = int(var_name.split('.')[2])
if stage_id == 0:
return 1 + depths[0]
elif stage_id == 1:
return 1 + depths[0] + depths[1]
elif stage_id == 2:
return 1 + depths[0] + depths[1] + depths[2]
else:
return 1 + depths[0] + depths[1] + depths[2]
else:
return num_max_layer - 1
@OPTIMIZER_BUILDERS.register_module()
class CustomLayerDecayOptimizerConstructor(DefaultOptimizerConstructor):
def add_params(self, params, module, prefix='', is_dcn_module=None):
"""Add all parameters of module to the params list.
The parameters of the given module will be added to the list of param
groups, with specific rules defined by paramwise_cfg.
Args:
params (list[dict]): A list of param groups, it will be modified
in place.
module (nn.Module): The module to be added.
prefix (str): The prefix of the module
is_dcn_module (int|float|None): If the current module is a
submodule of DCN, `is_dcn_module` will be passed to
control conv_offset layer's learning rate. Defaults to None.
"""
parameter_groups = {}
logger = get_root_logger()
logger.info(self.paramwise_cfg)
backbone_small_lr = self.paramwise_cfg.get('backbone_small_lr', False)
dino_head = self.paramwise_cfg.get('dino_head', False)
num_layers = self.paramwise_cfg.get('num_layers') + 2
layer_decay_rate = self.paramwise_cfg.get('layer_decay_rate')
depths = self.paramwise_cfg.get('depths')
offset_lr_scale = self.paramwise_cfg.get('offset_lr_scale', 1.0)
logger.info("Build CustomLayerDecayOptimizerConstructor %f - %d" %
(layer_decay_rate, num_layers))
weight_decay = self.base_wd
for name, param in module.named_parameters():
if not param.requires_grad:
continue # frozen weights
if len(param.shape) == 1 or name.endswith(".bias") or \
"relative_position" in name or \
"norm" in name or\
"sampling_offsets" in name:
group_name = "no_decay"
this_weight_decay = 0.
else:
group_name = "decay"
this_weight_decay = weight_decay
layer_id = get_num_layer_for_swin(name, num_layers, depths)
if layer_id == num_layers - 1 and dino_head and \
("sampling_offsets" in name or "reference_points" in name):
group_name = "layer_%d_%s_0.1x" % (layer_id, group_name)
elif ("sampling_offsets" in name or "reference_points" in name) and "backbone" in name:
group_name = "layer_%d_%s_offset_lr_scale" % (layer_id,
group_name)
elif "offset_mask" in name and "offset_mask_dw" not in name:
group_name = "layer_%d_%s_offset_lr_scale" % (layer_id,
group_name)
else:
group_name = "layer_%d_%s" % (layer_id, group_name)
if group_name not in parameter_groups:
scale = layer_decay_rate ** (num_layers - layer_id - 1)
if scale < 1 and backbone_small_lr == True:
scale = scale * 0.1
if "0.1x" in group_name:
scale = scale * 0.1
if "offset_lr_scale" in group_name:
scale = scale * offset_lr_scale
parameter_groups[group_name] = {
"weight_decay": this_weight_decay,
"params": [],
"param_names": [],
"lr_scale": scale,
"group_name": group_name,
"lr": scale * self.base_lr,
}
parameter_groups[group_name]["params"].append(param)
parameter_groups[group_name]["param_names"].append(name)
rank, _ = get_dist_info()
if rank == 0:
to_display = {}
for key in parameter_groups:
to_display[key] = {
"param_names": parameter_groups[key]["param_names"],
"lr_scale": parameter_groups[key]["lr_scale"],
"lr": parameter_groups[key]["lr"],
"weight_decay": parameter_groups[key]["weight_decay"],
}
logger.info("Param groups = %s" % json.dumps(to_display, indent=2))
# state_dict = module.state_dict()
# for group_name in parameter_groups:
# group = parameter_groups[group_name]
# for name in group["param_names"]:
# group["params"].append(state_dict[name])
params.extend(parameter_groups.values())

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# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
import json
from mmcv.runner import OPTIMIZER_BUILDERS, DefaultOptimizerConstructor
from mmcv.runner import get_dist_info
def get_num_layer_layer_wise(var_name, num_max_layer=12):
if var_name in ("backbone.cls_token", "backbone.mask_token", "backbone.pos_embed"):
return 0
elif var_name.startswith("backbone.downsample_layers"):
stage_id = int(var_name.split('.')[2])
if stage_id == 0:
layer_id = 0
elif stage_id == 1:
layer_id = 2
elif stage_id == 2:
layer_id = 3
elif stage_id == 3:
layer_id = num_max_layer
return layer_id
elif var_name.startswith("backbone.stages"):
stage_id = int(var_name.split('.')[2])
block_id = int(var_name.split('.')[3])
if stage_id == 0:
layer_id = 1
elif stage_id == 1:
layer_id = 2
elif stage_id == 2:
layer_id = 3 + block_id // 3
elif stage_id == 3:
layer_id = num_max_layer
return layer_id
else:
return num_max_layer + 1
def get_num_layer_stage_wise(var_name, num_max_layer):
if var_name in ("backbone.cls_token", "backbone.mask_token", "backbone.pos_embed"):
return 0
elif var_name.startswith("backbone.downsample_layers"):
return 0
elif var_name.startswith("backbone.stages"):
stage_id = int(var_name.split('.')[2])
return stage_id + 1
else:
return num_max_layer - 1
@OPTIMIZER_BUILDERS.register_module()
class LearningRateDecayOptimizerConstructor(DefaultOptimizerConstructor):
def add_params(self, params, module, prefix='', is_dcn_module=None):
"""Add all parameters of module to the params list.
The parameters of the given module will be added to the list of param
groups, with specific rules defined by paramwise_cfg.
Args:
params (list[dict]): A list of param groups, it will be modified
in place.
module (nn.Module): The module to be added.
prefix (str): The prefix of the module
is_dcn_module (int|float|None): If the current module is a
submodule of DCN, `is_dcn_module` will be passed to
control conv_offset layer's learning rate. Defaults to None.
"""
parameter_groups = {}
print(self.paramwise_cfg)
num_layers = self.paramwise_cfg.get('num_layers') + 2
decay_rate = self.paramwise_cfg.get('decay_rate')
decay_type = self.paramwise_cfg.get('decay_type', "layer_wise")
print("Build LearningRateDecayOptimizerConstructor %s %f - %d" % (decay_type, decay_rate, num_layers))
weight_decay = self.base_wd
for name, param in module.named_parameters():
if not param.requires_grad:
continue # frozen weights
if len(param.shape) == 1 or name.endswith(".bias") or name in ('pos_embed', 'cls_token'):
group_name = "no_decay"
this_weight_decay = 0.
else:
group_name = "decay"
this_weight_decay = weight_decay
if decay_type == "layer_wise":
layer_id = get_num_layer_layer_wise(name, self.paramwise_cfg.get('num_layers'))
elif decay_type == "stage_wise":
layer_id = get_num_layer_stage_wise(name, num_layers)
group_name = "layer_%d_%s" % (layer_id, group_name)
if group_name not in parameter_groups:
scale = decay_rate ** (num_layers - layer_id - 1)
parameter_groups[group_name] = {
"weight_decay": this_weight_decay,
"params": [],
"param_names": [],
"lr_scale": scale,
"group_name": group_name,
"lr": scale * self.base_lr,
}
parameter_groups[group_name]["params"].append(param)
parameter_groups[group_name]["param_names"].append(name)
rank, _ = get_dist_info()
if rank == 0:
to_display = {}
for key in parameter_groups:
to_display[key] = {
"param_names": parameter_groups[key]["param_names"],
"lr_scale": parameter_groups[key]["lr_scale"],
"lr": parameter_groups[key]["lr"],
"weight_decay": parameter_groups[key]["weight_decay"],
}
print("Param groups = %s" % json.dumps(to_display, indent=2))
params.extend(parameter_groups.values())

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import json
from mmcv.runner import OPTIMIZER_BUILDERS, DefaultOptimizerConstructor
from mmcv.runner import get_dist_info
def get_num_layer_for_vit(var_name, num_max_layer, layer_sep=None):
if var_name in ("backbone.cls_token", "backbone.mask_token", "backbone.pos_embed"):
return 0
elif var_name.startswith("backbone.patch_embed"):
return 0
elif var_name.startswith("backbone.blocks"):
layer_id = int(var_name.split('.')[2])
return layer_id + 1
elif var_name.startswith("backbone.layers"):
assert layer_sep is not None
split = var_name.split('.')
start_id = layer_sep[int(split[2])]
if split[3] == 'RC':
return start_id
return start_id + int(split[4]) + 1
else:
return num_max_layer - 1
@OPTIMIZER_BUILDERS.register_module()
class LayerDecayOptimizerConstructor_vit(DefaultOptimizerConstructor):
def add_params(self, params, module, prefix='', is_dcn_module=None):
"""Add all parameters of module to the params list.
The parameters of the given module will be added to the list of param
groups, with specific rules defined by paramwise_cfg.
Args:
params (list[dict]): A list of param groups, it will be modified
in place.
module (nn.Module): The module to be added.
prefix (str): The prefix of the module
is_dcn_module (int|float|None): If the current module is a
submodule of DCN, `is_dcn_module` will be passed to
control conv_offset layer's learning rate. Defaults to None.
"""
# get param-wise options
parameter_groups = {}
print(self.paramwise_cfg)
num_layers = self.paramwise_cfg.get('num_layers') + 2
layer_sep = self.paramwise_cfg.get('layer_sep', None)
layer_decay_rate = self.paramwise_cfg.get('layer_decay_rate')
print("Build LayerDecayOptimizerConstructor %f - %d" % (layer_decay_rate, num_layers))
weight_decay = self.base_wd
custom_keys = self.paramwise_cfg.get('custom_keys', {})
# first sort with alphabet order and then sort with reversed len of str
sorted_keys = sorted(custom_keys.keys())
for name, param in module.named_parameters():
if not param.requires_grad:
continue # frozen weights
if len(param.shape) == 1 or name.endswith(".bias") or ('pos_embed' in name) or ('cls_token' in name) or ('rel_pos_' in name):
group_name = "no_decay"
this_weight_decay = 0.
else:
group_name = "decay"
this_weight_decay = weight_decay
layer_id = get_num_layer_for_vit(name, num_layers, layer_sep)
group_name = "layer_%d_%s" % (layer_id, group_name)
# if the parameter match one of the custom keys, ignore other rules
this_lr_multi = 1.
for key in sorted_keys:
if key in f'{name}':
lr_mult = custom_keys[key].get('lr_mult', 1.)
this_lr_multi = lr_mult
group_name = "%s_%s" % (group_name, key)
break
if group_name not in parameter_groups:
scale = layer_decay_rate ** (num_layers - layer_id - 1)
parameter_groups[group_name] = {
"weight_decay": this_weight_decay,
"params": [],
"param_names": [],
"lr_scale": scale,
"group_name": group_name,
"lr": scale * self.base_lr * this_lr_multi,
}
parameter_groups[group_name]["params"].append(param)
parameter_groups[group_name]["param_names"].append(name)
rank, _ = get_dist_info()
if rank == 0:
to_display = {}
for key in parameter_groups:
to_display[key] = {
"param_names": parameter_groups[key]["param_names"],
"lr_scale": parameter_groups[key]["lr_scale"],
"lr": parameter_groups[key]["lr"],
"weight_decay": parameter_groups[key]["weight_decay"],
}
print("Param groups = %s" % json.dumps(to_display, indent=2))
params.extend(parameter_groups.values())

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
from .models import * # noqa: F401,F403
from .datasets import * # noqa: F401,F403
from .core import * # noqa: F401,F403

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from mmseg.core.evaluation import * # noqa: F401, F403
from mmseg.core.seg import * # noqa: F401, F403
from .anchor import * # noqa: F401,F403
from .box import * # noqa: F401,F403
from .evaluation import * # noqa: F401,F403
from .mask import * # noqa: F401,F403
from .utils import * # noqa: F401, F403

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from .point_generator import MlvlPointGenerator # noqa: F401,F403

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# Copyright (c) OpenMMLab. All rights reserved.
import warnings
from mmcv.utils import Registry, build_from_cfg
PRIOR_GENERATORS = Registry('Generator for anchors and points')
ANCHOR_GENERATORS = PRIOR_GENERATORS
def build_prior_generator(cfg, default_args=None):
return build_from_cfg(cfg, PRIOR_GENERATORS, default_args)
def build_anchor_generator(cfg, default_args=None):
warnings.warn(
'``build_anchor_generator`` would be deprecated soon, please use '
'``build_prior_generator`` ')
return build_prior_generator(cfg, default_args=default_args)

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# Copyright (c) OpenMMLab. All rights reserved.
import numpy as np
import torch
from torch.nn.modules.utils import _pair
from .builder import PRIOR_GENERATORS
@PRIOR_GENERATORS.register_module()
class PointGenerator:
def _meshgrid(self, x, y, row_major=True):
xx = x.repeat(len(y))
yy = y.view(-1, 1).repeat(1, len(x)).view(-1)
if row_major:
return xx, yy
else:
return yy, xx
def grid_points(self, featmap_size, stride=16, device='cuda'):
feat_h, feat_w = featmap_size
shift_x = torch.arange(0., feat_w, device=device) * stride
shift_y = torch.arange(0., feat_h, device=device) * stride
shift_xx, shift_yy = self._meshgrid(shift_x, shift_y)
stride = shift_x.new_full((shift_xx.shape[0], ), stride)
shifts = torch.stack([shift_xx, shift_yy, stride], dim=-1)
all_points = shifts.to(device)
return all_points
def valid_flags(self, featmap_size, valid_size, device='cuda'):
feat_h, feat_w = featmap_size
valid_h, valid_w = valid_size
assert valid_h <= feat_h and valid_w <= feat_w
valid_x = torch.zeros(feat_w, dtype=torch.bool, device=device)
valid_y = torch.zeros(feat_h, dtype=torch.bool, device=device)
valid_x[:valid_w] = 1
valid_y[:valid_h] = 1
valid_xx, valid_yy = self._meshgrid(valid_x, valid_y)
valid = valid_xx & valid_yy
return valid
@PRIOR_GENERATORS.register_module()
class MlvlPointGenerator:
"""Standard points generator for multi-level (Mlvl) feature maps in 2D
points-based detectors.
Args:
strides (list[int] | list[tuple[int, int]]): Strides of anchors
in multiple feature levels in order (w, h).
offset (float): The offset of points, the value is normalized with
corresponding stride. Defaults to 0.5.
"""
def __init__(self, strides, offset=0.5):
self.strides = [_pair(stride) for stride in strides]
self.offset = offset
@property
def num_levels(self):
"""int: number of feature levels that the generator will be applied"""
return len(self.strides)
@property
def num_base_priors(self):
"""list[int]: The number of priors (points) at a point
on the feature grid"""
return [1 for _ in range(len(self.strides))]
def _meshgrid(self, x, y, row_major=True):
yy, xx = torch.meshgrid(y, x)
if row_major:
# warning .flatten() would cause error in ONNX exporting
# have to use reshape here
return xx.reshape(-1), yy.reshape(-1)
else:
return yy.reshape(-1), xx.reshape(-1)
def grid_priors(self,
featmap_sizes,
dtype=torch.float32,
device='cuda',
with_stride=False):
"""Generate grid points of multiple feature levels.
Args:
featmap_sizes (list[tuple]): List of feature map sizes in
multiple feature levels, each size arrange as
as (h, w).
dtype (:obj:`dtype`): Dtype of priors. Default: torch.float32.
device (str): The device where the anchors will be put on.
with_stride (bool): Whether to concatenate the stride to
the last dimension of points.
Return:
list[torch.Tensor]: Points of multiple feature levels.
The sizes of each tensor should be (N, 2) when with stride is
``False``, where N = width * height, width and height
are the sizes of the corresponding feature level,
and the last dimension 2 represent (coord_x, coord_y),
otherwise the shape should be (N, 4),
and the last dimension 4 represent
(coord_x, coord_y, stride_w, stride_h).
"""
assert self.num_levels == len(featmap_sizes)
multi_level_priors = []
for i in range(self.num_levels):
priors = self.single_level_grid_priors(featmap_sizes[i],
level_idx=i,
dtype=dtype,
device=device,
with_stride=with_stride)
multi_level_priors.append(priors)
return multi_level_priors
def single_level_grid_priors(self,
featmap_size,
level_idx,
dtype=torch.float32,
device='cuda',
with_stride=False):
"""Generate grid Points of a single level.
Note:
This function is usually called by method ``self.grid_priors``.
Args:
featmap_size (tuple[int]): Size of the feature maps, arrange as
(h, w).
level_idx (int): The index of corresponding feature map level.
dtype (:obj:`dtype`): Dtype of priors. Default: torch.float32.
device (str, optional): The device the tensor will be put on.
Defaults to 'cuda'.
with_stride (bool): Concatenate the stride to the last dimension
of points.
Return:
Tensor: Points of single feature levels.
The shape of tensor should be (N, 2) when with stride is
``False``, where N = width * height, width and height
are the sizes of the corresponding feature level,
and the last dimension 2 represent (coord_x, coord_y),
otherwise the shape should be (N, 4),
and the last dimension 4 represent
(coord_x, coord_y, stride_w, stride_h).
"""
feat_h, feat_w = featmap_size
stride_w, stride_h = self.strides[level_idx]
shift_x = (torch.arange(0, feat_w, device=device) +
self.offset) * stride_w
# keep featmap_size as Tensor instead of int, so that we
# can convert to ONNX correctly
shift_x = shift_x.to(dtype)
shift_y = (torch.arange(0, feat_h, device=device) +
self.offset) * stride_h
# keep featmap_size as Tensor instead of int, so that we
# can convert to ONNX correctly
shift_y = shift_y.to(dtype)
shift_xx, shift_yy = self._meshgrid(shift_x, shift_y)
if not with_stride:
shifts = torch.stack([shift_xx, shift_yy], dim=-1)
else:
# use `shape[0]` instead of `len(shift_xx)` for ONNX export
stride_w = shift_xx.new_full((shift_xx.shape[0], ),
stride_w).to(dtype)
stride_h = shift_xx.new_full((shift_yy.shape[0], ),
stride_h).to(dtype)
shifts = torch.stack([shift_xx, shift_yy, stride_w, stride_h],
dim=-1)
all_points = shifts.to(device)
return all_points
def valid_flags(self, featmap_sizes, pad_shape, device='cuda'):
"""Generate valid flags of points of multiple feature levels.
Args:
featmap_sizes (list(tuple)): List of feature map sizes in
multiple feature levels, each size arrange as
as (h, w).
pad_shape (tuple(int)): The padded shape of the image,
arrange as (h, w).
device (str): The device where the anchors will be put on.
Return:
list(torch.Tensor): Valid flags of points of multiple levels.
"""
assert self.num_levels == len(featmap_sizes)
multi_level_flags = []
for i in range(self.num_levels):
point_stride = self.strides[i]
feat_h, feat_w = featmap_sizes[i]
h, w = pad_shape[:2]
valid_feat_h = min(int(np.ceil(h / point_stride[1])), feat_h)
valid_feat_w = min(int(np.ceil(w / point_stride[0])), feat_w)
flags = self.single_level_valid_flags((feat_h, feat_w),
(valid_feat_h, valid_feat_w),
device=device)
multi_level_flags.append(flags)
return multi_level_flags
def single_level_valid_flags(self,
featmap_size,
valid_size,
device='cuda'):
"""Generate the valid flags of points of a single feature map.
Args:
featmap_size (tuple[int]): The size of feature maps, arrange as
as (h, w).
valid_size (tuple[int]): The valid size of the feature maps.
The size arrange as as (h, w).
device (str, optional): The device where the flags will be put on.
Defaults to 'cuda'.
Returns:
torch.Tensor: The valid flags of each points in a single level \
feature map.
"""
feat_h, feat_w = featmap_size
valid_h, valid_w = valid_size
assert valid_h <= feat_h and valid_w <= feat_w
valid_x = torch.zeros(feat_w, dtype=torch.bool, device=device)
valid_y = torch.zeros(feat_h, dtype=torch.bool, device=device)
valid_x[:valid_w] = 1
valid_y[:valid_h] = 1
valid_xx, valid_yy = self._meshgrid(valid_x, valid_y)
valid = valid_xx & valid_yy
return valid
def sparse_priors(self,
prior_idxs,
featmap_size,
level_idx,
dtype=torch.float32,
device='cuda'):
"""Generate sparse points according to the ``prior_idxs``.
Args:
prior_idxs (Tensor): The index of corresponding anchors
in the feature map.
featmap_size (tuple[int]): feature map size arrange as (w, h).
level_idx (int): The level index of corresponding feature
map.
dtype (obj:`torch.dtype`): Date type of points. Defaults to
``torch.float32``.
device (obj:`torch.device`): The device where the points is
located.
Returns:
Tensor: Anchor with shape (N, 2), N should be equal to
the length of ``prior_idxs``. And last dimension
2 represent (coord_x, coord_y).
"""
height, width = featmap_size
x = (prior_idxs % width + self.offset) * self.strides[level_idx][0]
y = ((prior_idxs // width) % height +
self.offset) * self.strides[level_idx][1]
prioris = torch.stack([x, y], 1).to(dtype)
prioris = prioris.to(device)
return prioris

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from .builder import * # noqa: F401,F403
from .samplers import MaskPseudoSampler # noqa: F401,F403

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# Copyright (c) OpenMMLab. All rights reserved.
from mmcv.utils import Registry, build_from_cfg
BBOX_SAMPLERS = Registry('bbox_sampler')
BBOX_CODERS = Registry('bbox_coder')
def build_sampler(cfg, **default_args):
"""Builder of box sampler."""
return build_from_cfg(cfg, BBOX_SAMPLERS, default_args)
def build_bbox_coder(cfg, **default_args):
"""Builder of box coder."""
return build_from_cfg(cfg, BBOX_CODERS, default_args)

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from .mask_pseudo_sampler import MaskPseudoSampler # noqa: F401,F403

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# Copyright (c) OpenMMLab. All rights reserved.
from abc import ABCMeta, abstractmethod
import torch
from .sampling_result import SamplingResult
class BaseSampler(metaclass=ABCMeta):
"""Base class of samplers."""
def __init__(self,
num,
pos_fraction,
neg_pos_ub=-1,
add_gt_as_proposals=True,
**kwargs):
self.num = num
self.pos_fraction = pos_fraction
self.neg_pos_ub = neg_pos_ub
self.add_gt_as_proposals = add_gt_as_proposals
self.pos_sampler = self
self.neg_sampler = self
@abstractmethod
def _sample_pos(self, assign_result, num_expected, **kwargs):
"""Sample positive samples."""
pass
@abstractmethod
def _sample_neg(self, assign_result, num_expected, **kwargs):
"""Sample negative samples."""
pass
def sample(self,
assign_result,
bboxes,
gt_bboxes,
gt_labels=None,
**kwargs):
"""Sample positive and negative bboxes.
This is a simple implementation of bbox sampling given candidates,
assigning results and ground truth bboxes.
Args:
assign_result (:obj:`AssignResult`): Bbox assigning results.
bboxes (Tensor): Boxes to be sampled from.
gt_bboxes (Tensor): Ground truth bboxes.
gt_labels (Tensor, optional): Class labels of ground truth bboxes.
Returns:
:obj:`SamplingResult`: Sampling result.
Example:
>>> from mmdet.core.bbox import RandomSampler
>>> from mmdet.core.bbox import AssignResult
>>> from mmdet.core.bbox.demodata import ensure_rng, random_boxes
>>> rng = ensure_rng(None)
>>> assign_result = AssignResult.random(rng=rng)
>>> bboxes = random_boxes(assign_result.num_preds, rng=rng)
>>> gt_bboxes = random_boxes(assign_result.num_gts, rng=rng)
>>> gt_labels = None
>>> self = RandomSampler(num=32, pos_fraction=0.5, neg_pos_ub=-1,
>>> add_gt_as_proposals=False)
>>> self = self.sample(assign_result, bboxes, gt_bboxes, gt_labels)
"""
if len(bboxes.shape) < 2:
bboxes = bboxes[None, :]
bboxes = bboxes[:, :4]
gt_flags = bboxes.new_zeros((bboxes.shape[0], ), dtype=torch.uint8)
if self.add_gt_as_proposals and len(gt_bboxes) > 0:
if gt_labels is None:
raise ValueError(
'gt_labels must be given when add_gt_as_proposals is True')
bboxes = torch.cat([gt_bboxes, bboxes], dim=0)
assign_result.add_gt_(gt_labels)
gt_ones = bboxes.new_ones(gt_bboxes.shape[0], dtype=torch.uint8)
gt_flags = torch.cat([gt_ones, gt_flags])
num_expected_pos = int(self.num * self.pos_fraction)
pos_inds = self.pos_sampler._sample_pos(assign_result,
num_expected_pos,
bboxes=bboxes,
**kwargs)
# We found that sampled indices have duplicated items occasionally.
# (may be a bug of PyTorch)
pos_inds = pos_inds.unique()
num_sampled_pos = pos_inds.numel()
num_expected_neg = self.num - num_sampled_pos
if self.neg_pos_ub >= 0:
_pos = max(1, num_sampled_pos)
neg_upper_bound = int(self.neg_pos_ub * _pos)
if num_expected_neg > neg_upper_bound:
num_expected_neg = neg_upper_bound
neg_inds = self.neg_sampler._sample_neg(assign_result,
num_expected_neg,
bboxes=bboxes,
**kwargs)
neg_inds = neg_inds.unique()
sampling_result = SamplingResult(pos_inds, neg_inds, bboxes, gt_bboxes,
assign_result, gt_flags)
return sampling_result

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# Copyright (c) OpenMMLab. All rights reserved.
"""copy from
https://github.com/ZwwWayne/K-Net/blob/main/knet/det/mask_pseudo_sampler.py."""
import torch
from ..builder import BBOX_SAMPLERS
from .base_sampler import BaseSampler
from .mask_sampling_result import MaskSamplingResult
@BBOX_SAMPLERS.register_module()
class MaskPseudoSampler(BaseSampler):
"""A pseudo sampler that does not do sampling actually."""
def __init__(self, **kwargs):
pass
def _sample_pos(self, **kwargs):
"""Sample positive samples."""
raise NotImplementedError
def _sample_neg(self, **kwargs):
"""Sample negative samples."""
raise NotImplementedError
def sample(self, assign_result, masks, gt_masks, **kwargs):
"""Directly returns the positive and negative indices of samples.
Args:
assign_result (:obj:`AssignResult`): Assigned results
masks (torch.Tensor): Bounding boxes
gt_masks (torch.Tensor): Ground truth boxes
Returns:
:obj:`SamplingResult`: sampler results
"""
pos_inds = torch.nonzero(assign_result.gt_inds > 0,
as_tuple=False).squeeze(-1).unique()
neg_inds = torch.nonzero(assign_result.gt_inds == 0,
as_tuple=False).squeeze(-1).unique()
gt_flags = masks.new_zeros(masks.shape[0], dtype=torch.uint8)
sampling_result = MaskSamplingResult(pos_inds, neg_inds, masks,
gt_masks, assign_result, gt_flags)
return sampling_result

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# Copyright (c) OpenMMLab. All rights reserved.
"""copy from
https://github.com/ZwwWayne/K-Net/blob/main/knet/det/mask_pseudo_sampler.py."""
import torch
from .sampling_result import SamplingResult
class MaskSamplingResult(SamplingResult):
"""Mask sampling result."""
def __init__(self, pos_inds, neg_inds, masks, gt_masks, assign_result,
gt_flags):
self.pos_inds = pos_inds
self.neg_inds = neg_inds
self.pos_masks = masks[pos_inds]
self.neg_masks = masks[neg_inds]
self.pos_is_gt = gt_flags[pos_inds]
self.num_gts = gt_masks.shape[0]
self.pos_assigned_gt_inds = assign_result.gt_inds[pos_inds] - 1
if gt_masks.numel() == 0:
# hack for index error case
assert self.pos_assigned_gt_inds.numel() == 0
self.pos_gt_masks = torch.empty_like(gt_masks)
else:
self.pos_gt_masks = gt_masks[self.pos_assigned_gt_inds, :]
if assign_result.labels is not None:
self.pos_gt_labels = assign_result.labels[pos_inds]
else:
self.pos_gt_labels = None
@property
def masks(self):
"""torch.Tensor: concatenated positive and negative boxes"""
return torch.cat([self.pos_masks, self.neg_masks])
def __nice__(self):
data = self.info.copy()
data['pos_masks'] = data.pop('pos_masks').shape
data['neg_masks'] = data.pop('neg_masks').shape
parts = [f"'{k}': {v!r}" for k, v in sorted(data.items())]
body = ' ' + ',\n '.join(parts)
return '{\n' + body + '\n}'
@property
def info(self):
"""Returns a dictionary of info about the object."""
return {
'pos_inds': self.pos_inds,
'neg_inds': self.neg_inds,
'pos_masks': self.pos_masks,
'neg_masks': self.neg_masks,
'pos_is_gt': self.pos_is_gt,
'num_gts': self.num_gts,
'pos_assigned_gt_inds': self.pos_assigned_gt_inds,
}

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
from mmdet.utils import util_mixins
class SamplingResult(util_mixins.NiceRepr):
"""Bbox sampling result.
Example:
>>> # xdoctest: +IGNORE_WANT
>>> from mmdet.core.bbox.samplers.sampling_result import * # NOQA
>>> self = SamplingResult.random(rng=10)
>>> print(f'self = {self}')
self = <SamplingResult({
'neg_bboxes': torch.Size([12, 4]),
'neg_inds': tensor([ 0, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
'num_gts': 4,
'pos_assigned_gt_inds': tensor([], dtype=torch.int64),
'pos_bboxes': torch.Size([0, 4]),
'pos_inds': tensor([], dtype=torch.int64),
'pos_is_gt': tensor([], dtype=torch.uint8)
})>
"""
def __init__(self, pos_inds, neg_inds, bboxes, gt_bboxes, assign_result,
gt_flags):
self.pos_inds = pos_inds
self.neg_inds = neg_inds
self.pos_bboxes = bboxes[pos_inds]
self.neg_bboxes = bboxes[neg_inds]
self.pos_is_gt = gt_flags[pos_inds]
self.num_gts = gt_bboxes.shape[0]
self.pos_assigned_gt_inds = assign_result.gt_inds[pos_inds] - 1
if gt_bboxes.numel() == 0:
# hack for index error case
assert self.pos_assigned_gt_inds.numel() == 0
self.pos_gt_bboxes = torch.empty_like(gt_bboxes).view(-1, 4)
else:
if len(gt_bboxes.shape) < 2:
gt_bboxes = gt_bboxes.view(-1, 4)
self.pos_gt_bboxes = gt_bboxes[self.pos_assigned_gt_inds.long(), :]
if assign_result.labels is not None:
self.pos_gt_labels = assign_result.labels[pos_inds]
else:
self.pos_gt_labels = None
@property
def bboxes(self):
"""torch.Tensor: concatenated positive and negative boxes"""
return torch.cat([self.pos_bboxes, self.neg_bboxes])
def to(self, device):
"""Change the device of the data inplace.
Example:
>>> self = SamplingResult.random()
>>> print(f'self = {self.to(None)}')
>>> # xdoctest: +REQUIRES(--gpu)
>>> print(f'self = {self.to(0)}')
"""
_dict = self.__dict__
for key, value in _dict.items():
if isinstance(value, torch.Tensor):
_dict[key] = value.to(device)
return self
def __nice__(self):
data = self.info.copy()
data['pos_bboxes'] = data.pop('pos_bboxes').shape
data['neg_bboxes'] = data.pop('neg_bboxes').shape
parts = [f"'{k}': {v!r}" for k, v in sorted(data.items())]
body = ' ' + ',\n '.join(parts)
return '{\n' + body + '\n}'
@property
def info(self):
"""Returns a dictionary of info about the object."""
return {
'pos_inds': self.pos_inds,
'neg_inds': self.neg_inds,
'pos_bboxes': self.pos_bboxes,
'neg_bboxes': self.neg_bboxes,
'pos_is_gt': self.pos_is_gt,
'num_gts': self.num_gts,
'pos_assigned_gt_inds': self.pos_assigned_gt_inds,
}
@classmethod
def random(cls, rng=None, **kwargs):
"""
Args:
rng (None | int | numpy.random.RandomState): seed or state.
kwargs (keyword arguments):
- num_preds: number of predicted boxes
- num_gts: number of true boxes
- p_ignore (float): probability of a predicted box assigned to \
an ignored truth.
- p_assigned (float): probability of a predicted box not being \
assigned.
- p_use_label (float | bool): with labels or not.
Returns:
:obj:`SamplingResult`: Randomly generated sampling result.
Example:
>>> from mmdet.core.bbox.samplers.sampling_result import * # NOQA
>>> self = SamplingResult.random()
>>> print(self.__dict__)
"""
from mmdet.core.bbox import demodata
from mmdet.core.bbox.assigners.assign_result import AssignResult
from mmdet.core.bbox.samplers.random_sampler import RandomSampler
rng = demodata.ensure_rng(rng)
# make probabalistic?
num = 32
pos_fraction = 0.5
neg_pos_ub = -1
assign_result = AssignResult.random(rng=rng, **kwargs)
# Note we could just compute an assignment
bboxes = demodata.random_boxes(assign_result.num_preds, rng=rng)
gt_bboxes = demodata.random_boxes(assign_result.num_gts, rng=rng)
if rng.rand() > 0.2:
# sometimes algorithms squeeze their data, be robust to that
gt_bboxes = gt_bboxes.squeeze()
bboxes = bboxes.squeeze()
if assign_result.labels is None:
gt_labels = None
else:
gt_labels = None # todo
if gt_labels is None:
add_gt_as_proposals = False
else:
add_gt_as_proposals = True # make probabalistic?
sampler = RandomSampler(num,
pos_fraction,
neg_pos_ub=neg_pos_ub,
add_gt_as_proposals=add_gt_as_proposals,
rng=rng)
self = sampler.sample(assign_result, bboxes, gt_bboxes, gt_labels)
return self

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from .panoptic_utils import INSTANCE_OFFSET # noqa: F401,F403

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# Copyright (c) OpenMMLab. All rights reserved.
# A custom value to distinguish instance ID and category ID; need to
# be greater than the number of categories.
# For a pixel in the panoptic result map:
# pan_id = ins_id * INSTANCE_OFFSET + cat_id
INSTANCE_OFFSET = 1000

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from .utils import mask2bbox # noqa: F401,F403

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# Copyright (c) OpenMMLab. All rights reserved.
import mmcv
import numpy as np
import pycocotools.mask as mask_util
import torch
def split_combined_polys(polys, poly_lens, polys_per_mask):
"""Split the combined 1-D polys into masks.
A mask is represented as a list of polys, and a poly is represented as
a 1-D array. In dataset, all masks are concatenated into a single 1-D
tensor. Here we need to split the tensor into original representations.
Args:
polys (list): a list (length = image num) of 1-D tensors
poly_lens (list): a list (length = image num) of poly length
polys_per_mask (list): a list (length = image num) of poly number
of each mask
Returns:
list: a list (length = image num) of list (length = mask num) of \
list (length = poly num) of numpy array.
"""
mask_polys_list = []
for img_id in range(len(polys)):
polys_single = polys[img_id]
polys_lens_single = poly_lens[img_id].tolist()
polys_per_mask_single = polys_per_mask[img_id].tolist()
split_polys = mmcv.slice_list(polys_single, polys_lens_single)
mask_polys = mmcv.slice_list(split_polys, polys_per_mask_single)
mask_polys_list.append(mask_polys)
return mask_polys_list
# TODO: move this function to more proper place
def encode_mask_results(mask_results):
"""Encode bitmap mask to RLE code.
Args:
mask_results (list | tuple[list]): bitmap mask results.
In mask scoring rcnn, mask_results is a tuple of (segm_results,
segm_cls_score).
Returns:
list | tuple: RLE encoded mask.
"""
if isinstance(mask_results, tuple): # mask scoring
cls_segms, cls_mask_scores = mask_results
else:
cls_segms = mask_results
num_classes = len(cls_segms)
encoded_mask_results = [[] for _ in range(num_classes)]
for i in range(len(cls_segms)):
for cls_segm in cls_segms[i]:
encoded_mask_results[i].append(
mask_util.encode(
np.array(
cls_segm[:, :, np.newaxis], order='F',
dtype='uint8'))[0]) # encoded with RLE
if isinstance(mask_results, tuple):
return encoded_mask_results, cls_mask_scores
else:
return encoded_mask_results
def mask2bbox(masks):
"""Obtain tight bounding boxes of binary masks.
Args:
masks (Tensor): Binary mask of shape (n, h, w).
Returns:
Tensor: Bboxe with shape (n, 4) of \
positive region in binary mask.
"""
N = masks.shape[0]
bboxes = masks.new_zeros((N, 4), dtype=torch.float32)
x_any = torch.any(masks, dim=1)
y_any = torch.any(masks, dim=2)
for i in range(N):
x = torch.where(x_any[i, :])[0]
y = torch.where(y_any[i, :])[0]
if len(x) > 0 and len(y) > 0:
bboxes[i, :] = bboxes.new_tensor(
[x[0], y[0], x[-1] + 1, y[-1] + 1])
return bboxes

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# Copyright (c) OpenMMLab. All rights reserved.
from .dist_utils import (DistOptimizerHook, all_reduce_dict, allreduce_grads,
reduce_mean)
from .misc import add_prefix, multi_apply
__all__ = [
'add_prefix', 'multi_apply', 'DistOptimizerHook', 'allreduce_grads',
'all_reduce_dict', 'reduce_mean'
]

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# Copyright (c) OpenMMLab. All rights reserved.
import functools
import pickle
import warnings
from collections import OrderedDict
import torch
import torch.distributed as dist
from mmcv.runner import OptimizerHook, get_dist_info
from torch._utils import (_flatten_dense_tensors, _take_tensors,
_unflatten_dense_tensors)
def _allreduce_coalesced(tensors, world_size, bucket_size_mb=-1):
if bucket_size_mb > 0:
bucket_size_bytes = bucket_size_mb * 1024 * 1024
buckets = _take_tensors(tensors, bucket_size_bytes)
else:
buckets = OrderedDict()
for tensor in tensors:
tp = tensor.type()
if tp not in buckets:
buckets[tp] = []
buckets[tp].append(tensor)
buckets = buckets.values()
for bucket in buckets:
flat_tensors = _flatten_dense_tensors(bucket)
dist.all_reduce(flat_tensors)
flat_tensors.div_(world_size)
for tensor, synced in zip(
bucket, _unflatten_dense_tensors(flat_tensors, bucket)):
tensor.copy_(synced)
def allreduce_grads(params, coalesce=True, bucket_size_mb=-1):
"""Allreduce gradients.
Args:
params (list[torch.Parameters]): List of parameters of a model
coalesce (bool, optional): Whether allreduce parameters as a whole.
Defaults to True.
bucket_size_mb (int, optional): Size of bucket, the unit is MB.
Defaults to -1.
"""
grads = [
param.grad.data for param in params
if param.requires_grad and param.grad is not None
]
world_size = dist.get_world_size()
if coalesce:
_allreduce_coalesced(grads, world_size, bucket_size_mb)
else:
for tensor in grads:
dist.all_reduce(tensor.div_(world_size))
class DistOptimizerHook(OptimizerHook):
"""Deprecated optimizer hook for distributed training."""
def __init__(self, *args, **kwargs):
warnings.warn('"DistOptimizerHook" is deprecated, please switch to'
'"mmcv.runner.OptimizerHook".')
super().__init__(*args, **kwargs)
def reduce_mean(tensor):
""""Obtain the mean of tensor on different GPUs."""
if not (dist.is_available() and dist.is_initialized()):
return tensor
tensor = tensor.clone()
dist.all_reduce(tensor.div_(dist.get_world_size()), op=dist.ReduceOp.SUM)
return tensor
def obj2tensor(pyobj, device='cuda'):
"""Serialize picklable python object to tensor."""
storage = torch.ByteStorage.from_buffer(pickle.dumps(pyobj))
return torch.ByteTensor(storage).to(device=device)
def tensor2obj(tensor):
"""Deserialize tensor to picklable python object."""
return pickle.loads(tensor.cpu().numpy().tobytes())
@functools.lru_cache()
def _get_global_gloo_group():
"""Return a process group based on gloo backend, containing all the ranks
The result is cached."""
if dist.get_backend() == 'nccl':
return dist.new_group(backend='gloo')
else:
return dist.group.WORLD
def all_reduce_dict(py_dict, op='sum', group=None, to_float=True):
"""Apply all reduce function for python dict object.
The code is modified from https://github.com/Megvii-
BaseDetection/YOLOX/blob/main/yolox/utils/allreduce_norm.py.
NOTE: make sure that py_dict in different ranks has the same keys and
the values should be in the same shape.
Args:
py_dict (dict): Dict to be applied all reduce op.
op (str): Operator, could be 'sum' or 'mean'. Default: 'sum'
group (:obj:`torch.distributed.group`, optional): Distributed group,
Default: None.
to_float (bool): Whether to convert all values of dict to float.
Default: True.
Returns:
OrderedDict: reduced python dict object.
"""
_, world_size = get_dist_info()
if world_size == 1:
return py_dict
if group is None:
# TODO: May try not to use gloo in the future
group = _get_global_gloo_group()
if dist.get_world_size(group) == 1:
return py_dict
# all reduce logic across different devices.
py_key = list(py_dict.keys())
py_key_tensor = obj2tensor(py_key)
dist.broadcast(py_key_tensor, src=0)
py_key = tensor2obj(py_key_tensor)
tensor_shapes = [py_dict[k].shape for k in py_key]
tensor_numels = [py_dict[k].numel() for k in py_key]
if to_float:
flatten_tensor = torch.cat(
[py_dict[k].flatten().float() for k in py_key])
else:
flatten_tensor = torch.cat([py_dict[k].flatten() for k in py_key])
dist.all_reduce(flatten_tensor, op=dist.ReduceOp.SUM)
if op == 'mean':
flatten_tensor /= world_size
split_tensors = [
x.reshape(shape) for x, shape in zip(
torch.split(flatten_tensor, tensor_numels), tensor_shapes)
]
return OrderedDict({k: v for k, v in zip(py_key, split_tensors)})

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# Copyright (c) OpenMMLab. All rights reserved.
def multi_apply(func, *args, **kwargs):
"""Apply function to a list of arguments.
Note:
This function applies the ``func`` to multiple inputs and
map the multiple outputs of the ``func`` into different
list. Each list contains the same type of outputs corresponding
to different inputs.
Args:
func (Function): A function that will be applied to a list of
arguments
Returns:
tuple(list): A tuple containing multiple list, each list contains \
a kind of returned results by the function
"""
pfunc = partial(func, **kwargs) if kwargs else func
map_results = map(pfunc, *args)
return tuple(map(list, zip(*map_results)))
def add_prefix(inputs, prefix):
"""Add prefix for dict.
Args:
inputs (dict): The input dict with str keys.
prefix (str): The prefix to add.
Returns:
dict: The dict with keys updated with ``prefix``.
"""
outputs = dict()
for name, value in inputs.items():
outputs[f'{prefix}.{name}'] = value
return outputs

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# Copyright (c) OpenMMLab. All rights reserved.
from .mapillary import MapillaryDataset # noqa: F401,F403
from .nyu_depth_v2 import NYUDepthV2Dataset # noqa: F401,F403
from .pipelines import * # noqa: F401,F403
from .dataset_wrappers import ConcatDataset
__all__ = [
'MapillaryDataset', 'NYUDepthV2Dataset', 'ConcatDataset'
]

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# Copyright (c) OpenMMLab. All rights reserved.
import bisect
from itertools import chain
import mmcv
import numpy as np
from mmcv.utils import build_from_cfg, print_log
from torch.utils.data.dataset import ConcatDataset as _ConcatDataset
from mmseg.datasets.builder import DATASETS
@DATASETS.register_module(force=True)
class ConcatDataset(_ConcatDataset):
"""A wrapper of concatenated dataset.
Same as :obj:`torch.utils.data.dataset.ConcatDataset`, but
support evaluation and formatting results
Args:
datasets (list[:obj:`Dataset`]): A list of datasets.
separate_eval (bool): Whether to evaluate the concatenated
dataset results separately, Defaults to True.
"""
def __init__(self, datasets, separate_eval=True):
super(ConcatDataset, self).__init__(datasets)
self.CLASSES = datasets[0].CLASSES
self.PALETTE = datasets[0].PALETTE
self.separate_eval = separate_eval
assert separate_eval in [True, False], \
f'separate_eval can only be True or False,' \
f'but get {separate_eval}'
def evaluate(self, results, logger=None, **kwargs):
"""Evaluate the results.
Args:
results (list[tuple[torch.Tensor]] | list[str]]): per image
pre_eval results or predict segmentation map for
computing evaluation metric.
logger (logging.Logger | str | None): Logger used for printing
related information during evaluation. Default: None.
Returns:
dict[str: float]: evaluate results of the total dataset
or each separate
dataset if `self.separate_eval=True`.
"""
assert len(results) == self.cumulative_sizes[-1], \
('Dataset and results have different sizes: '
f'{self.cumulative_sizes[-1]} v.s. {len(results)}')
# Check whether all the datasets support evaluation
for dataset in self.datasets:
assert hasattr(dataset, 'evaluate'), \
f'{type(dataset)} does not implement evaluate function'
if self.separate_eval:
dataset_idx = -1
total_eval_results = dict()
for size, dataset in zip(self.cumulative_sizes, self.datasets):
start_idx = 0 if dataset_idx == -1 else \
self.cumulative_sizes[dataset_idx]
end_idx = self.cumulative_sizes[dataset_idx + 1]
results_per_dataset = results[start_idx:end_idx]
print_log(
f'\nEvaluateing {dataset.img_dir} with '
f'{len(results_per_dataset)} images now',
logger=logger)
eval_results_per_dataset = dataset.evaluate(
results_per_dataset, logger=logger, **kwargs)
dataset_idx += 1
for k, v in eval_results_per_dataset.items():
total_eval_results.update({f'{dataset_idx}_{k}': v})
return total_eval_results
if len(set([type(ds) for ds in self.datasets])) != 1:
raise NotImplementedError(
'All the datasets should have same types when '
'self.separate_eval=False')
else:
if mmcv.is_list_of(results, np.ndarray) or mmcv.is_list_of(
results, str):
# merge the generators of gt_seg_maps
gt_seg_maps = chain(
*[dataset.get_gt_seg_maps() for dataset in self.datasets])
else:
# if the results are `pre_eval` results,
# we do not need gt_seg_maps to evaluate
gt_seg_maps = None
eval_results = self.datasets[0].evaluate(
results, gt_seg_maps=gt_seg_maps, logger=logger, **kwargs)
return eval_results
def get_dataset_idx_and_sample_idx(self, indice):
"""Return dataset and sample index when given an indice of
ConcatDataset.
Args:
indice (int): indice of sample in ConcatDataset
Returns:
int: the index of sub dataset the sample belong to
int: the index of sample in its corresponding subset
"""
if indice < 0:
if -indice > len(self):
raise ValueError(
'absolute value of index should not exceed dataset length')
indice = len(self) + indice
dataset_idx = bisect.bisect_right(self.cumulative_sizes, indice)
if dataset_idx == 0:
sample_idx = indice
else:
sample_idx = indice - self.cumulative_sizes[dataset_idx - 1]
return dataset_idx, sample_idx
def format_results(self, results, imgfile_prefix, indices=None, **kwargs):
"""format result for every sample of ConcatDataset."""
if indices is None:
indices = list(range(len(self)))
assert isinstance(results, list), 'results must be a list.'
assert isinstance(indices, list), 'indices must be a list.'
ret_res = []
for i, indice in enumerate(indices):
dataset_idx, sample_idx = self.get_dataset_idx_and_sample_idx(
indice)
res = self.datasets[dataset_idx].format_results(
[results[i]],
imgfile_prefix + f'/{dataset_idx}',
indices=[sample_idx],
**kwargs)
ret_res.append(res)
return sum(ret_res, [])
def pre_eval(self, preds, indices):
"""do pre eval for every sample of ConcatDataset."""
# In order to compat with batch inference
if not isinstance(indices, list):
indices = [indices]
if not isinstance(preds, list):
preds = [preds]
ret_res = []
for i, indice in enumerate(indices):
dataset_idx, sample_idx = self.get_dataset_idx_and_sample_idx(
indice)
res = self.datasets[dataset_idx].pre_eval(preds[i], sample_idx)
ret_res.append(res)
return sum(ret_res, [])

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
from mmseg.datasets.builder import DATASETS
from mmseg.datasets.custom import CustomDataset
@DATASETS.register_module()
class MapillaryDataset(CustomDataset):
"""Mapillary dataset.
"""
CLASSES = ('Bird', 'Ground Animal', 'Curb', 'Fence', 'Guard Rail', 'Barrier',
'Wall', 'Bike Lane', 'Crosswalk - Plain', 'Curb Cut', 'Parking', 'Pedestrian Area',
'Rail Track', 'Road', 'Service Lane', 'Sidewalk', 'Bridge', 'Building', 'Tunnel',
'Person', 'Bicyclist', 'Motorcyclist', 'Other Rider', 'Lane Marking - Crosswalk',
'Lane Marking - General', 'Mountain', 'Sand', 'Sky', 'Snow', 'Terrain', 'Vegetation',
'Water', 'Banner', 'Bench', 'Bike Rack', 'Billboard', 'Catch Basin', 'CCTV Camera',
'Fire Hydrant', 'Junction Box', 'Mailbox', 'Manhole', 'Phone Booth', 'Pothole',
'Street Light', 'Pole', 'Traffic Sign Frame', 'Utility Pole', 'Traffic Light',
'Traffic Sign (Back)', 'Traffic Sign (Front)', 'Trash Can', 'Bicycle', 'Boat',
'Bus', 'Car', 'Caravan', 'Motorcycle', 'On Rails', 'Other Vehicle', 'Trailer',
'Truck', 'Wheeled Slow', 'Car Mount', 'Ego Vehicle', 'Unlabeled')
PALETTE = [[165, 42, 42], [0, 192, 0], [196, 196, 196], [190, 153, 153],
[180, 165, 180], [90, 120, 150], [102, 102, 156], [128, 64, 255],
[140, 140, 200], [170, 170, 170], [250, 170, 160], [96, 96, 96],
[230, 150, 140], [128, 64, 128], [110, 110, 110], [244, 35, 232],
[150, 100, 100], [70, 70, 70], [150, 120, 90], [220, 20, 60],
[255, 0, 0], [255, 0, 100], [255, 0, 200], [200, 128, 128],
[255, 255, 255], [64, 170, 64], [230, 160, 50], [70, 130, 180],
[190, 255, 255], [152, 251, 152], [107, 142, 35], [0, 170, 30],
[255, 255, 128], [250, 0, 30], [100, 140, 180], [220, 220, 220],
[220, 128, 128], [222, 40, 40], [100, 170, 30], [40, 40, 40],
[33, 33, 33], [100, 128, 160], [142, 0, 0], [70, 100, 150],
[210, 170, 100], [153, 153, 153], [128, 128, 128], [0, 0, 80],
[250, 170, 30], [192, 192, 192], [220, 220, 0], [140, 140, 20],
[119, 11, 32], [150, 0, 255], [0, 60, 100], [0, 0, 142], [0, 0, 90],
[0, 0, 230], [0, 80, 100], [128, 64, 64], [0, 0, 110], [0, 0, 70],
[0, 0, 192], [32, 32, 32], [120, 10, 10], [0, 0, 0]]
def __init__(self, **kwargs):
super(MapillaryDataset, self).__init__(
img_suffix='.jpg',
seg_map_suffix='.png',
reduce_zero_label=False,
**kwargs)

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
from mmseg.datasets.builder import DATASETS
from mmseg.datasets.custom import CustomDataset
@DATASETS.register_module()
class NYUDepthV2Dataset(CustomDataset):
"""NYU Depth V2 dataset.
"""
CLASSES = ('wall', 'floor', 'cabinet', 'bed', 'chair',
'sofa', 'table', 'door', 'window', 'bookshelf',
'picture', 'counter', 'blinds', 'desk', 'shelves',
'curtain', 'dresser', 'pillow', 'mirror', 'floor mat',
'clothes', 'ceiling', 'books', 'refridgerator', 'television',
'paper', 'towel', 'shower curtain', 'box', 'whiteboard',
'person', 'night stand', 'toilet', 'sink', 'lamp',
'bathtub', 'bag', 'otherstructure', 'otherfurniture', 'otherprop')
PALETTE = [[120, 120, 120], [180, 120, 120], [6, 230, 230], [80, 50, 50],
[4, 200, 3], [120, 120, 80], [140, 140, 140], [204, 5, 255],
[230, 230, 230], [4, 250, 7], [224, 5, 255], [235, 255, 7],
[150, 5, 61], [120, 120, 70], [8, 255, 51], [255, 6, 82],
[143, 255, 140], [204, 255, 4], [255, 51, 7], [204, 70, 3],
[0, 102, 200], [61, 230, 250], [255, 6, 51], [11, 102, 255],
[255, 7, 71], [255, 9, 224], [9, 7, 230], [220, 220, 220],
[255, 9, 92], [112, 9, 255], [8, 255, 214], [7, 255, 224],
[255, 184, 6], [10, 255, 71], [255, 41, 10], [7, 255, 255],
[224, 255, 8], [102, 8, 255], [255, 61, 6], [255, 194, 7],]
def __init__(self, split, **kwargs):
super(NYUDepthV2Dataset, self).__init__(
img_suffix='.png',
seg_map_suffix='.png',
split=split,
reduce_zero_label=True,
**kwargs)

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# Copyright (c) OpenMMLab. All rights reserved.
from .formatting import DefaultFormatBundle, ToMask
from .transform import MapillaryHack, PadShortSide, SETR_Resize
__all__ = [
'DefaultFormatBundle', 'ToMask', 'SETR_Resize',
'PadShortSide', 'MapillaryHack'
]

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# Copyright (c) OpenMMLab. All rights reserved.
import numpy as np
from mmcv.parallel import DataContainer as DC
from mmseg.datasets.builder import PIPELINES
from mmseg.datasets.pipelines.formatting import to_tensor
@PIPELINES.register_module(force=True)
class DefaultFormatBundle(object):
"""Default formatting bundle.
It simplifies the pipeline of formatting common fields, including "img"
and "gt_semantic_seg". These fields are formatted as follows.
- img: (1)transpose, (2)to tensor, (3)to DataContainer (stack=True)
- gt_semantic_seg: (1)unsqueeze dim-0 (2)to tensor,
(3)to DataContainer (stack=True)
"""
def __call__(self, results):
"""Call function to transform and format common fields in results.
Args:
results (dict): Result dict contains the data to convert.
Returns:
dict: The result dict contains the data that is formatted with
default bundle.
"""
if 'img' in results:
img = results['img']
if len(img.shape) < 3:
img = np.expand_dims(img, -1)
img = np.ascontiguousarray(img.transpose(2, 0, 1))
results['img'] = DC(to_tensor(img), stack=True)
if 'gt_semantic_seg' in results:
# convert to long
results['gt_semantic_seg'] = DC(to_tensor(
results['gt_semantic_seg'][None, ...].astype(np.int64)),
stack=True)
if 'gt_masks' in results:
results['gt_masks'] = DC(to_tensor(results['gt_masks']))
if 'gt_labels' in results:
results['gt_labels'] = DC(to_tensor(results['gt_labels']))
return results
def __repr__(self):
return self.__class__.__name__
@PIPELINES.register_module()
class ToMask(object):
"""Transfer gt_semantic_seg to binary mask and generate gt_labels."""
def __init__(self, ignore_index=255):
self.ignore_index = ignore_index
def __call__(self, results):
gt_semantic_seg = results['gt_semantic_seg']
gt_labels = np.unique(gt_semantic_seg)
# remove ignored region
gt_labels = gt_labels[gt_labels != self.ignore_index]
gt_masks = []
for class_id in gt_labels:
gt_masks.append(gt_semantic_seg == class_id)
if len(gt_masks) == 0:
# Some image does not have annotation (all ignored)
gt_masks = np.empty((0, ) + results['pad_shape'][:-1], dtype=np.int64)
gt_labels = np.empty((0, ), dtype=np.int64)
else:
gt_masks = np.asarray(gt_masks, dtype=np.int64)
gt_labels = np.asarray(gt_labels, dtype=np.int64)
results['gt_labels'] = gt_labels
results['gt_masks'] = gt_masks
return results
def __repr__(self):
return self.__class__.__name__ + \
f'(ignore_index={self.ignore_index})'

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# Copyright (c) OpenMMLab. All rights reserved.
import mmcv
import numpy as np
from mmseg.datasets.builder import PIPELINES
@PIPELINES.register_module()
class SETR_Resize(object):
"""Resize images & seg.
This transform resizes the input image to some scale. If the input dict
contains the key "scale", then the scale in the input dict is used,
otherwise the specified scale in the init method is used.
``img_scale`` can either be a tuple (single-scale) or a list of tuple
(multi-scale). There are 3 multiscale modes:
- ``ratio_range is not None``: randomly sample a ratio from the ratio range
and multiply it with the image scale.
- ``ratio_range is None and multiscale_mode == "range"``: randomly sample a
scale from the a range.
- ``ratio_range is None and multiscale_mode == "value"``: randomly sample a
scale from multiple scales.
Args:
img_scale (tuple or list[tuple]): Images scales for resizing.
multiscale_mode (str): Either "range" or "value".
ratio_range (tuple[float]): (min_ratio, max_ratio)
keep_ratio (bool): Whether to keep the aspect ratio when resizing the
image.
"""
def __init__(self,
img_scale=None,
multiscale_mode='range',
ratio_range=None,
keep_ratio=True,
crop_size=None,
setr_multi_scale=False):
if img_scale is None:
self.img_scale = None
else:
if isinstance(img_scale, list):
self.img_scale = img_scale
else:
self.img_scale = [img_scale]
# assert mmcv.is_list_of(self.img_scale, tuple)
if ratio_range is not None:
# mode 1: given a scale and a range of image ratio
assert len(self.img_scale) == 1
else:
# mode 2: given multiple scales or a range of scales
assert multiscale_mode in ['value', 'range']
self.multiscale_mode = multiscale_mode
self.ratio_range = ratio_range
self.keep_ratio = keep_ratio
self.crop_size = crop_size
self.setr_multi_scale = setr_multi_scale
@staticmethod
def random_select(img_scales):
"""Randomly select an img_scale from given candidates.
Args:
img_scales (list[tuple]): Images scales for selection.
Returns:
(tuple, int): Returns a tuple ``(img_scale, scale_dix)``,
where ``img_scale`` is the selected image scale and
``scale_idx`` is the selected index in the given candidates.
"""
assert mmcv.is_list_of(img_scales, tuple)
scale_idx = np.random.randint(len(img_scales))
img_scale = img_scales[scale_idx]
return img_scale, scale_idx
@staticmethod
def random_sample(img_scales):
"""Randomly sample an img_scale when ``multiscale_mode=='range'``.
Args:
img_scales (list[tuple]): Images scale range for sampling.
There must be two tuples in img_scales, which specify the lower
and uper bound of image scales.
Returns:
(tuple, None): Returns a tuple ``(img_scale, None)``, where
``img_scale`` is sampled scale and None is just a placeholder
to be consistent with :func:`random_select`.
"""
assert mmcv.is_list_of(img_scales, tuple) and len(img_scales) == 2
img_scale_long = [max(s) for s in img_scales]
img_scale_short = [min(s) for s in img_scales]
long_edge = np.random.randint(
min(img_scale_long),
max(img_scale_long) + 1)
short_edge = np.random.randint(
min(img_scale_short),
max(img_scale_short) + 1)
img_scale = (long_edge, short_edge)
return img_scale, None
@staticmethod
def random_sample_ratio(img_scale, ratio_range):
"""Randomly sample an img_scale when ``ratio_range`` is specified.
A ratio will be randomly sampled from the range specified by
``ratio_range``. Then it would be multiplied with ``img_scale`` to
generate sampled scale.
Args:
img_scale (tuple): Images scale base to multiply with ratio.
ratio_range (tuple[float]): The minimum and maximum ratio to scale
the ``img_scale``.
Returns:
(tuple, None): Returns a tuple ``(scale, None)``, where
``scale`` is sampled ratio multiplied with ``img_scale`` and
None is just a placeholder to be consistent with
:func:`random_select`.
"""
assert isinstance(img_scale, tuple) and len(img_scale) == 2
min_ratio, max_ratio = ratio_range
assert min_ratio <= max_ratio
ratio = np.random.random_sample() * (max_ratio - min_ratio) + min_ratio
scale = int(img_scale[0] * ratio), int(img_scale[1] * ratio)
return scale, None
def _random_scale(self, results):
"""Randomly sample an img_scale according to ``ratio_range`` and
``multiscale_mode``.
If ``ratio_range`` is specified, a ratio will be sampled and be
multiplied with ``img_scale``.
If multiple scales are specified by ``img_scale``, a scale will be
sampled according to ``multiscale_mode``.
Otherwise, single scale will be used.
Args:
results (dict): Result dict from :obj:`dataset`.
Returns:
dict: Two new keys 'scale` and 'scale_idx` are added into
``results``, which would be used by subsequent pipelines.
"""
if self.ratio_range is not None:
scale, scale_idx = self.random_sample_ratio(
self.img_scale[0], self.ratio_range)
elif len(self.img_scale) == 1:
scale, scale_idx = self.img_scale[0], 0
elif self.multiscale_mode == 'range':
scale, scale_idx = self.random_sample(self.img_scale)
elif self.multiscale_mode == 'value':
scale, scale_idx = self.random_select(self.img_scale)
else:
raise NotImplementedError
results['scale'] = scale
results['scale_idx'] = scale_idx
def _resize_img(self, results):
"""Resize images with ``results['scale']``."""
if self.keep_ratio:
if self.setr_multi_scale:
if min(results['scale']) < self.crop_size[0]:
new_short = self.crop_size[0]
else:
new_short = min(results['scale'])
h, w = results['img'].shape[:2]
if h > w:
new_h, new_w = new_short * h / w, new_short
else:
new_h, new_w = new_short, new_short * w / h
results['scale'] = (new_h, new_w)
img, scale_factor = mmcv.imrescale(results['img'],
results['scale'],
return_scale=True)
# the w_scale and h_scale has minor difference
# a real fix should be done in the mmcv.imrescale in the future
new_h, new_w = img.shape[:2]
h, w = results['img'].shape[:2]
w_scale = new_w / w
h_scale = new_h / h
else:
img, w_scale, h_scale = mmcv.imresize(results['img'],
results['scale'],
return_scale=True)
scale_factor = np.array([w_scale, h_scale, w_scale, h_scale],
dtype=np.float32)
results['img'] = img
results['img_shape'] = img.shape
results['pad_shape'] = img.shape # in case that there is no padding
results['scale_factor'] = scale_factor
results['keep_ratio'] = self.keep_ratio
def _resize_seg(self, results):
"""Resize semantic segmentation map with ``results['scale']``."""
for key in results.get('seg_fields', []):
if self.keep_ratio:
gt_seg = mmcv.imrescale(results[key],
results['scale'],
interpolation='nearest')
else:
gt_seg = mmcv.imresize(results[key],
results['scale'],
interpolation='nearest')
results['gt_semantic_seg'] = gt_seg
def __call__(self, results):
"""Call function to resize images, bounding boxes, masks, semantic
segmentation map.
Args:
results (dict): Result dict from loading pipeline.
Returns:
dict: Resized results, 'img_shape', 'pad_shape', 'scale_factor',
'keep_ratio' keys are added into result dict.
"""
if 'scale' not in results:
self._random_scale(results)
self._resize_img(results)
self._resize_seg(results)
return results
def __repr__(self):
repr_str = self.__class__.__name__
repr_str += (f'(img_scale={self.img_scale}, '
f'multiscale_mode={self.multiscale_mode}, '
f'ratio_range={self.ratio_range}, '
f'keep_ratio={self.keep_ratio})')
return repr_str
@PIPELINES.register_module()
class PadShortSide(object):
"""Pad the image & mask.
Pad to the minimum size that is equal or larger than a number.
Added keys are "pad_shape", "pad_fixed_size",
Args:
size (int, optional): Fixed padding size.
pad_val (float, optional): Padding value. Default: 0.
seg_pad_val (float, optional): Padding value of segmentation map.
Default: 255.
"""
def __init__(self, size=None, pad_val=0, seg_pad_val=255):
self.size = size
self.pad_val = pad_val
self.seg_pad_val = seg_pad_val
# only one of size and size_divisor should be valid
assert size is not None
def _pad_img(self, results):
"""Pad images according to ``self.size``."""
h, w = results['img'].shape[:2]
new_h = max(h, self.size)
new_w = max(w, self.size)
padded_img = mmcv.impad(results['img'],
shape=(new_h, new_w),
pad_val=self.pad_val)
results['img'] = padded_img
results['pad_shape'] = padded_img.shape
# results['unpad_shape'] = (h, w)
def _pad_seg(self, results):
"""Pad masks according to ``results['pad_shape']``."""
for key in results.get('seg_fields', []):
results[key] = mmcv.impad(results[key],
shape=results['pad_shape'][:2],
pad_val=self.seg_pad_val)
def __call__(self, results):
"""Call function to pad images, masks, semantic segmentation maps.
Args:
results (dict): Result dict from loading pipeline.
Returns:
dict: Updated result dict.
"""
h, w = results['img'].shape[:2]
if h >= self.size and w >= self.size: # 短边比窗口大,跳过
pass
else:
self._pad_img(results)
self._pad_seg(results)
return results
def __repr__(self):
repr_str = self.__class__.__name__
repr_str += f'(size={self.size}, pad_val={self.pad_val})'
return repr_str
@PIPELINES.register_module()
class MapillaryHack(object):
"""map MV 65 class to 19 class like Cityscapes."""
def __init__(self):
self.map = [[13, 24, 41], [2, 15], [17], [6], [3],
[45, 47], [48], [50], [30], [29], [27], [19], [20, 21, 22],
[55], [61], [54], [58], [57], [52]]
self.others = [i for i in range(66)]
for i in self.map:
for j in i:
if j in self.others:
self.others.remove(j)
def __call__(self, results):
"""Call function to process the image with gamma correction.
Args:
results (dict): Result dict from loading pipeline.
Returns:
dict: Processed results.
"""
gt_map = results['gt_semantic_seg']
# others -> 255
new_gt_map = np.zeros_like(gt_map)
for value in self.others:
new_gt_map[gt_map == value] = 255
for index, map in enumerate(self.map):
for value in map:
new_gt_map[gt_map == value] = index
results['gt_semantic_seg'] = new_gt_map
return results
def __repr__(self):
repr_str = self.__class__.__name__
return repr_str

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
from .backbones import * # noqa: F401,F403
from .decode_heads import * # noqa: F401,F403
from .losses import * # noqa: F401,F403
from .plugins import * # noqa: F401,F403
from .segmentors import * # noqa: F401,F403
from .utils import * # noqa: F401,F403

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@@ -0,0 +1,9 @@
# --------------------------------------------------------
# FlashInternImage
# Copyright (c) 2023 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
from .flash_intern_image import FlashInternImage
__all__ = ['FlashInternImage']

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@@ -0,0 +1,763 @@
# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
import torch
import torch.nn as nn
from collections import OrderedDict
import torch.utils.checkpoint as checkpoint
from timm.models.layers import trunc_normal_, DropPath
from mmcv.runner import _load_checkpoint
from mmcv.cnn import constant_init, trunc_normal_init
from mmseg.utils import get_root_logger
from mmseg.models.builder import BACKBONES
import torch.nn.functional as F
import DCNv4
class to_channels_first(nn.Module):
def __init__(self):
super().__init__()
def forward(self, x):
return x.permute(0, 3, 1, 2)
class to_channels_last(nn.Module):
def __init__(self):
super().__init__()
def forward(self, x):
return x.permute(0, 2, 3, 1)
def build_norm_layer(dim,
norm_layer,
in_format='channels_last',
out_format='channels_last',
eps=1e-6):
layers = []
if norm_layer == 'BN':
if in_format == 'channels_last':
layers.append(to_channels_first())
layers.append(nn.BatchNorm2d(dim))
if out_format == 'channels_last':
layers.append(to_channels_last())
elif norm_layer == 'LN':
if in_format == 'channels_first':
layers.append(to_channels_last())
layers.append(nn.LayerNorm(dim, eps=eps))
if out_format == 'channels_first':
layers.append(to_channels_first())
else:
raise NotImplementedError(
f'build_norm_layer does not support {norm_layer}')
return nn.Sequential(*layers)
def build_act_layer(act_layer):
if act_layer == 'ReLU':
return nn.ReLU(inplace=True)
elif act_layer == 'SiLU':
return nn.SiLU(inplace=True)
elif act_layer == 'GELU':
return nn.GELU()
raise NotImplementedError(f'build_act_layer does not support {act_layer}')
class CrossAttention(nn.Module):
r""" Cross Attention Module
Args:
dim (int): Number of input channels.
num_heads (int): Number of attention heads. Default: 8
qkv_bias (bool, optional): If True, add a learnable bias to q, k, v.
Default: False.
qk_scale (float | None, optional): Override default qk scale of
head_dim ** -0.5 if set. Default: None.
attn_drop (float, optional): Dropout ratio of attention weight.
Default: 0.0
proj_drop (float, optional): Dropout ratio of output. Default: 0.0
attn_head_dim (int, optional): Dimension of attention head.
out_dim (int, optional): Dimension of output.
"""
def __init__(self,
dim,
num_heads=8,
qkv_bias=False,
qk_scale=None,
attn_drop=0.,
proj_drop=0.,
attn_head_dim=None,
out_dim=None):
super().__init__()
if out_dim is None:
out_dim = dim
self.num_heads = num_heads
head_dim = dim // num_heads
if attn_head_dim is not None:
head_dim = attn_head_dim
all_head_dim = head_dim * self.num_heads
self.scale = qk_scale or head_dim ** -0.5
assert all_head_dim == dim
self.q = nn.Linear(dim, all_head_dim, bias=False)
self.k = nn.Linear(dim, all_head_dim, bias=False)
self.v = nn.Linear(dim, all_head_dim, bias=False)
if qkv_bias:
self.q_bias = nn.Parameter(torch.zeros(all_head_dim))
self.k_bias = nn.Parameter(torch.zeros(all_head_dim))
self.v_bias = nn.Parameter(torch.zeros(all_head_dim))
else:
self.q_bias = None
self.k_bias = None
self.v_bias = None
self.attn_drop = nn.Dropout(attn_drop)
self.proj = nn.Linear(all_head_dim, out_dim)
self.proj_drop = nn.Dropout(proj_drop)
def forward(self, x, k=None, v=None):
B, N, C = x.shape
N_k = k.shape[1]
N_v = v.shape[1]
q_bias, k_bias, v_bias = None, None, None
if self.q_bias is not None:
q_bias = self.q_bias
k_bias = self.k_bias
v_bias = self.v_bias
q = F.linear(input=x, weight=self.q.weight, bias=q_bias)
q = q.reshape(B, N, 1, self.num_heads,
-1).permute(2, 0, 3, 1,
4).squeeze(0) # (B, N_head, N_q, dim)
k = F.linear(input=k, weight=self.k.weight, bias=k_bias)
k = k.reshape(B, N_k, 1, self.num_heads, -1).permute(2, 0, 3, 1,
4).squeeze(0)
v = F.linear(input=v, weight=self.v.weight, bias=v_bias)
v = v.reshape(B, N_v, 1, self.num_heads, -1).permute(2, 0, 3, 1,
4).squeeze(0)
q = q * self.scale
attn = (q @ k.transpose(-2, -1)) # (B, N_head, N_q, N_k)
attn = attn.softmax(dim=-1)
attn = self.attn_drop(attn)
x = (attn @ v).transpose(1, 2).reshape(B, N, -1)
x = self.proj(x)
x = self.proj_drop(x)
return x
class AttentiveBlock(nn.Module):
r"""Attentive Block
Args:
dim (int): Number of input channels.
num_heads (int): Number of attention heads. Default: 8
qkv_bias (bool, optional): If True, add a learnable bias to q, k, v.
Default: False.
qk_scale (float | None, optional): Override default qk scale of
head_dim ** -0.5 if set. Default: None.
drop (float, optional): Dropout rate. Default: 0.0.
attn_drop (float, optional): Attention dropout rate. Default: 0.0.
drop_path (float | tuple[float], optional): Stochastic depth rate.
Default: 0.0.
norm_layer (nn.Module, optional): Normalization layer. Default: nn.LayerNorm.
attn_head_dim (int, optional): Dimension of attention head. Default: None.
out_dim (int, optional): Dimension of output. Default: None.
"""
def __init__(self,
dim,
num_heads,
qkv_bias=False,
qk_scale=None,
drop=0.,
attn_drop=0.,
drop_path=0.,
norm_layer="LN",
attn_head_dim=None,
out_dim=None):
super().__init__()
self.norm1_q = build_norm_layer(dim, norm_layer, eps=1e-6)
self.norm1_k = build_norm_layer(dim, norm_layer, eps=1e-6)
self.norm1_v = build_norm_layer(dim, norm_layer, eps=1e-6)
self.cross_dcn = CrossAttention(dim,
num_heads=num_heads,
qkv_bias=qkv_bias,
qk_scale=qk_scale,
attn_drop=attn_drop,
proj_drop=drop,
attn_head_dim=attn_head_dim,
out_dim=out_dim)
self.drop_path = DropPath(
drop_path) if drop_path > 0. else nn.Identity()
def forward(self,
x_q,
x_kv,
pos_q,
pos_k,
bool_masked_pos,
rel_pos_bias=None):
x_q = self.norm1_q(x_q + pos_q)
x_k = self.norm1_k(x_kv + pos_k)
x_v = self.norm1_v(x_kv)
x = self.cross_dcn(x_q, k=x_k, v=x_v)
return x
class AttentionPoolingBlock(AttentiveBlock):
def forward(self, x):
x_q = x.mean(1, keepdim=True)
x_kv = x
pos_q, pos_k = 0, 0
x = super().forward(x_q, x_kv, pos_q, pos_k,
bool_masked_pos=None,
rel_pos_bias=None)
x = x.squeeze(1)
return x
class StemLayer(nn.Module):
r""" Stem layer of InternImage
Args:
in_chans (int): number of input channels
out_chans (int): number of output channels
act_layer (str): activation layer
norm_layer (str): normalization layer
"""
def __init__(self,
in_chans=3,
out_chans=96,
act_layer='GELU',
norm_layer='BN'):
super().__init__()
self.conv1 = nn.Conv2d(in_chans,
out_chans // 2,
kernel_size=3,
stride=2,
padding=1)
self.norm1 = build_norm_layer(out_chans // 2, norm_layer,
'channels_first', 'channels_first')
self.act = build_act_layer(act_layer)
self.conv2 = nn.Conv2d(out_chans // 2,
out_chans,
kernel_size=3,
stride=2,
padding=1)
self.norm2 = build_norm_layer(out_chans, norm_layer, 'channels_first',
'channels_last')
def forward(self, x):
x = self.conv1(x)
x = self.norm1(x)
x = self.act(x)
x = self.conv2(x)
x = self.norm2(x)
return x
class DownsampleLayer(nn.Module):
r""" Downsample layer of InternImage
Args:
channels (int): number of input channels
norm_layer (str): normalization layer
"""
def __init__(self, channels, norm_layer='LN'):
super().__init__()
self.conv = nn.Conv2d(channels,
2 * channels,
kernel_size=3,
stride=2,
padding=1,
bias=False)
self.norm = build_norm_layer(2 * channels, norm_layer,
'channels_first', 'channels_first')
def forward(self, x, shape=None):
H, W = shape
N, HW, C = x.shape
x = x.view(N, H, W, C)
x = self.conv(x.permute(0, 3, 1, 2))
x = self.norm(x) # B C H W
H, W = x.size(2), x.size(3)
x = x.flatten(2).permute(0, 2, 1)
return x, (H, W)
class MLPLayer(nn.Module):
r""" MLP layer of InternImage
Args:
in_features (int): number of input features
hidden_features (int): number of hidden features
out_features (int): number of output features
act_layer (str): activation layer
drop (float): dropout rate
"""
def __init__(self,
in_features,
hidden_features=None,
out_features=None,
act_layer='GELU',
mlp_fc2_bias=False,
drop=0.):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
self.fc1 = nn.Linear(in_features, hidden_features, bias=True)
self.act = build_act_layer(act_layer)
self.fc2 = nn.Linear(hidden_features, out_features, bias=mlp_fc2_bias)
self.drop = nn.Dropout(drop)
def forward(self, x, shape, level_idx=0):
x = self.fc1(x)
x = self.act(x)
x = self.drop(x)
x = self.fc2(x)
x = self.drop(x)
return x
class InternImageLayer(nn.Module):
r""" Basic layer of InternImage
Args:
core_op (nn.Module): core operation of InternImage
channels (int): number of input channels
groups (list): Groups of each block.
mlp_ratio (float): ratio of mlp hidden features to input channels
drop (float): dropout rate
drop_path (float): drop path rate
act_layer (str): activation layer
norm_layer (str): normalization layer
post_norm (bool): whether to use post normalization
layer_scale (float): layer scale
offset_scale (float): offset scale
with_cp (bool): whether to use checkpoint
"""
def __init__(self,
core_op,
channels,
groups,
mlp_ratio=4.,
drop=0.,
drop_path=0.,
act_layer='GELU',
norm_layer='LN',
post_norm=False,
layer_scale=None,
offset_scale=1.0,
with_cp=False,
dcn_output_bias=False,
mlp_fc2_bias=False,
dw_kernel_size=None, # for InternImage-H/G
res_post_norm=False, # for InternImage-H/G
center_feature_scale=False): # for InternImage-H/G
super().__init__()
self.channels = channels
self.groups = groups
self.mlp_ratio = mlp_ratio
self.with_cp = with_cp
self.norm1 = build_norm_layer(channels, 'LN')
self.post_norm = post_norm
self.dcn = core_op(
channels=channels,
group=groups,
offset_scale=offset_scale,
dw_kernel_size=dw_kernel_size,
output_bias=dcn_output_bias,
)
self.drop_path = DropPath(drop_path) if drop_path > 0. \
else nn.Identity()
self.norm2 = build_norm_layer(channels, 'LN')
self.mlp = MLPLayer(in_features=channels,
hidden_features=int(channels * mlp_ratio),
act_layer=act_layer,
drop=drop,
mlp_fc2_bias=mlp_fc2_bias
)
self.layer_scale = layer_scale is not None
if self.layer_scale:
self.gamma1 = nn.Parameter(layer_scale * torch.ones(channels),
requires_grad=True)
self.gamma2 = nn.Parameter(layer_scale * torch.ones(channels),
requires_grad=True)
self.res_post_norm = res_post_norm
if res_post_norm:
self.res_post_norm1 = build_norm_layer(channels, 'LN')
self.res_post_norm2 = build_norm_layer(channels, 'LN')
def forward(self, x, shape, level_idx=0):
def _inner_forward(x, shape, level_idx):
if not self.layer_scale:
if self.post_norm:
x = x + self.drop_path(self.norm1(self.dcn(x, shape, level_idx)))
x = x + self.drop_path(self.norm2(self.mlp(x, shape, level_idx)))
elif self.res_post_norm: # for InternImage-H/G
x = x + self.drop_path(self.res_post_norm1(self.dcn(self.norm1(x), shape, level_idx)))
x = x + self.drop_path(self.res_post_norm2(self.mlp(self.norm2(x), shape, level_idx)))
else:
x = x + self.drop_path(self.dcn(self.norm1(x), shape, level_idx))
x = x + self.drop_path(self.mlp(self.norm2(x), shape, level_idx))
return x
if self.post_norm:
x = x + self.drop_path(self.gamma1 * self.norm1(self.dcn(x, shape)))
x = x + self.drop_path(self.gamma2 * self.norm2(self.mlp(x, shape, level_idx)))
else:
x = x + self.drop_path(self.gamma1 * self.dcn(self.norm1(x), shape))
x = x + self.drop_path(self.gamma2 * self.mlp(self.norm2(x), shape, level_idx))
return x
if self.with_cp and x.requires_grad:
x = checkpoint.checkpoint(_inner_forward, x, shape, level_idx)
else:
x = _inner_forward(x, shape, level_idx)
return x
class InternImageBlock(nn.Module):
r""" Block of InternImage
Args:
core_op (nn.Module): core operation of InternImage
channels (int): number of input channels
depths (list): Depth of each block.
groups (list): Groups of each block.
mlp_ratio (float): ratio of mlp hidden features to input channels
drop (float): dropout rate
drop_path (float): drop path rate
act_layer (str): activation layer
norm_layer (str): normalization layer
post_norm (bool): whether to use post normalization
layer_scale (float): layer scale
offset_scale (float): offset scale
with_cp (bool): whether to use checkpoint
"""
def __init__(self,
core_op,
channels,
depth,
groups,
downsample=True,
downsample_layer=DownsampleLayer,
mlp_ratio=4.,
drop=0.,
drop_path=0.,
act_layer='GELU',
norm_layer='LN',
post_norm=False,
offset_scale=0.5,
layer_scale=None,
with_cp=False,
dcn_output_bias=False,
mlp_fc2_bias=False,
dw_kernel_size=None, # for InternImage-H/G
post_norm_block_ids=None, # for InternImage-H/G
res_post_norm=False, # for InternImage-H/G
center_feature_scale=False): # for InternImage-H/G
super().__init__()
self.channels = channels
self.depth = depth
self.post_norm = post_norm
self.center_feature_scale = center_feature_scale
self.blocks = nn.ModuleList([
InternImageLayer(
core_op=core_op,
channels=channels,
groups=groups,
mlp_ratio=mlp_ratio,
drop=drop,
drop_path=drop_path[i] if isinstance(
drop_path, list) else drop_path,
act_layer=act_layer,
norm_layer=norm_layer,
post_norm=post_norm,
layer_scale=layer_scale,
offset_scale=offset_scale,
with_cp=with_cp,
dcn_output_bias=dcn_output_bias,
mlp_fc2_bias=mlp_fc2_bias,
dw_kernel_size=dw_kernel_size, # for InternImage-H/G
res_post_norm=res_post_norm, # for InternImage-H/G
center_feature_scale=center_feature_scale # for InternImage-H/G
) for i in range(depth)
])
if not self.post_norm or center_feature_scale:
self.norm = build_norm_layer(channels, 'LN')
self.post_norm_block_ids = post_norm_block_ids
if post_norm_block_ids is not None: # for InternImage-H/G
self.post_norms = nn.ModuleList(
[build_norm_layer(channels, 'LN', eps=1e-6) for _ in post_norm_block_ids]
)
self.downsample = downsample_layer(
channels=channels, norm_layer=norm_layer) if downsample else None
def forward(self, x, return_wo_downsample=False, shape=None, level_idx=0
):
for i, blk in enumerate(self.blocks):
x = blk(x, shape=shape, level_idx=level_idx)
if (self.post_norm_block_ids is not None) and (i in self.post_norm_block_ids):
index = self.post_norm_block_ids.index(i)
x = self.post_norms[index](x) # for InternImage-H/G
if not self.post_norm or self.center_feature_scale:
x = self.norm(x)
if return_wo_downsample:
x_ = x.clone()
if self.downsample is not None:
x, shape = self.downsample(x, shape=shape)
if return_wo_downsample:
return x, x_, shape
return x, shape
@BACKBONES.register_module()
class FlashInternImage(nn.Module):
r""" FlashInternImage
A PyTorch impl based on :
`InternImage: Exploring Large-Scale Vision Foundation Models with Deformable Convolutions` -
https://arxiv.org/pdf/2103.14030
'DCNv4': TODO: add arxiv
Args:
core_op (str): Core operator. Default: 'DCNv4'
channels (int): Number of the first stage. Default: 64
depths (list): Depth of each block. Default: [3, 4, 18, 5]
groups (list): Groups of each block. Default: [3, 6, 12, 24]
num_classes (int): Number of classes. Default: 1000
mlp_ratio (float): Ratio of mlp hidden dim to embedding dim. Default: 4.
drop_rate (float): Probability of an element to be zeroed. Default: 0.
drop_path_rate (float): Stochastic depth rate. Default: 0.2
act_layer (str): Activation layer. Default: 'GELU'
norm_layer (str): Normalization layer. Default: 'LN'
layer_scale (bool): Whether to use layer scale. Default: False
cls_scale (bool): Whether to use class scale. Default: False
with_cp (bool): Use checkpoint or not. Using checkpoint will save some
dw_kernel_size (int): Size of the dwconv. Default: None
use_clip_projector (bool): Whether to use clip projector. Default: False
level2_post_norm (bool): Whether to use level2 post norm. Default: False
level2_post_norm_block_ids (list): Indexes of post norm blocks. Default: None
res_post_norm (bool): Whether to use res post norm. Default: False
center_feature_scale (bool): Whether to use center feature scale. Default: False
"""
def __init__(self,
core_op='DCNv4',
channels=64,
depths=[3, 4, 18, 5],
groups=[3, 6, 12, 24],
num_classes=1000,
mlp_ratio=4.,
drop_rate=0.,
drop_path_rate=0.2,
drop_path_type='linear',
act_layer='GELU',
norm_layer='LN',
layer_scale=None,
offset_scale=0.5,
post_norm=False,
with_cp=False,
mlp_fc2_bias=False,
dcn_output_bias=False,
dw_kernel_size=None, # for InternImage-H/G
level2_post_norm=False, # for InternImage-H/G
level2_post_norm_block_ids=None, # for InternImage-H/G
res_post_norm=False, # for InternImage-H/G
center_feature_scale=False, # for InternImage-H/G
out_indices=(0, 1, 2, 3),
init_cfg=None,
**kwargs):
super().__init__()
self.core_op = core_op
self.num_levels = len(depths)
self.depths = depths
self.channels = channels
self.num_features = int(channels * 2**(self.num_levels - 1))
self.post_norm = post_norm
self.mlp_ratio = mlp_ratio
self.init_cfg = init_cfg
self.out_indices = out_indices
self.level2_post_norm_block_ids = level2_post_norm_block_ids
logger = get_root_logger()
logger.info(f'using core type: {core_op}')
logger.info(f'using activation layer: {act_layer}')
logger.info(f'using main norm layer: {norm_layer}')
logger.info(f'using dpr: {drop_path_type}, {drop_path_rate}')
logger.info(f"level2_post_norm: {level2_post_norm}")
logger.info(f"level2_post_norm_block_ids: {level2_post_norm_block_ids}")
logger.info(f"res_post_norm: {res_post_norm}")
in_chans = 3
self.patch_embed = StemLayer(in_chans=in_chans,
out_chans=channels,
act_layer=act_layer,
norm_layer=norm_layer)
self.pos_drop = nn.Dropout(p=drop_rate)
dpr = [
x.item() for x in torch.linspace(0, drop_path_rate, sum(depths))
]
if drop_path_type == 'uniform':
for i in range(len(dpr)):
dpr[i] = drop_path_rate
self.levels = nn.ModuleList()
for i in range(self.num_levels):
post_norm_block_ids = level2_post_norm_block_ids if level2_post_norm and (
i == 2) else None # for InternImage-H/G
level = InternImageBlock(
core_op=getattr(DCNv4, core_op),
channels=int(channels * 2**i),
depth=depths[i],
groups=groups[i],
mlp_ratio=self.mlp_ratio,
drop=drop_rate,
drop_path=dpr[sum(depths[:i]):sum(depths[:i + 1])],
act_layer=act_layer,
norm_layer=norm_layer,
post_norm=post_norm,
downsample=(i < self.num_levels - 1),
downsample_layer = DownsampleLayer,
layer_scale=layer_scale,
offset_scale=offset_scale,
with_cp=with_cp,
mlp_fc2_bias=mlp_fc2_bias,
dcn_output_bias=dcn_output_bias,
dw_kernel_size=dw_kernel_size, # for InternImage-H/G
post_norm_block_ids=post_norm_block_ids, # for InternImage-H/G
res_post_norm=res_post_norm, # for InternImage-H/G
center_feature_scale=center_feature_scale # for InternImage-H/G
)
self.levels.append(level)
self.num_layers = len(depths)
self.apply(self._init_weights)
self.apply(self._init_deform_weights)
def init_weights(self):
logger = get_root_logger()
if self.init_cfg is None:
logger.warn(f'No pre-trained weights for '
f'{self.__class__.__name__}, '
f'training start from scratch')
for m in self.modules():
if isinstance(m, nn.Linear):
trunc_normal_init(m, std=.02, bias=0.)
elif isinstance(m, nn.LayerNorm):
constant_init(m, 1.0)
else:
assert 'checkpoint' in self.init_cfg, f'Only support ' \
f'specify `Pretrained` in ' \
f'`init_cfg` in ' \
f'{self.__class__.__name__} '
ckpt = _load_checkpoint(self.init_cfg.checkpoint,
logger=logger,
map_location='cpu')
if 'state_dict' in ckpt:
_state_dict = ckpt['state_dict']
elif 'model_ema' in ckpt:
_state_dict = ckpt['model_ema']
elif 'model' in ckpt:
_state_dict = ckpt['model']
else:
_state_dict = ckpt
state_dict = OrderedDict()
for k, v in _state_dict.items():
if k.startswith('backbone.'):
state_dict[k[9:]] = v
else:
state_dict[k] = v
# strip prefix of state_dict
if list(state_dict.keys())[0].startswith('module.'):
state_dict = {k[7:]: v for k, v in state_dict.items()}
# load state_dict
meg = self.load_state_dict(state_dict, False)
logger.info(meg)
def _init_weights(self, m):
if isinstance(m, nn.Linear):
trunc_normal_(m.weight, std=.02)
if isinstance(m, nn.Linear) and m.bias is not None:
nn.init.constant_(m.bias, 0)
elif isinstance(m, nn.LayerNorm):
nn.init.constant_(m.bias, 0)
nn.init.constant_(m.weight, 1.0)
def _init_deform_weights(self, m):
if isinstance(m, getattr(DCNv4, self.core_op)):
m._reset_parameters()
@torch.jit.ignore
def lr_decay_keywards(self, decay_ratio=0.87):
lr_ratios = {}
# blocks
idx = 0
for i in range(4):
layer_num = 3 - i # 3 2 1 0
for j in range(self.depths[layer_num]):
block_num = self.depths[layer_num] - j - 1
tag = 'levels.{}.blocks.{}.'.format(layer_num, block_num)
decay = 1.0 * (decay_ratio**idx)
lr_ratios[tag] = decay
idx += 1
# patch_embed (before stage-1)
lr_ratios["patch_embed"] = lr_ratios['levels.0.blocks.0.']
# levels.0.downsample (between stage-1 and stage-2)
lr_ratios["levels.0.downsample"] = lr_ratios['levels.1.blocks.0.']
lr_ratios["levels.0.norm"] = lr_ratios['levels.1.blocks.0.']
# levels.1.downsample (between stage-2 and stage-3)
lr_ratios["levels.1.downsample"] = lr_ratios['levels.2.blocks.0.']
lr_ratios["levels.1.norm"] = lr_ratios['levels.2.blocks.0.']
# levels.2.downsample (between stage-3 and stage-4)
lr_ratios["levels.2.downsample"] = lr_ratios['levels.3.blocks.0.']
lr_ratios["levels.2.norm"] = lr_ratios['levels.3.blocks.0.']
return lr_ratios
def forward(self, x):
x = self.patch_embed(x)
N, H, W, C = x.shape
x = x.view(N, H*W, C)
shape=(H, W)
seq_out = []
for level_idx, level in enumerate(self.levels):
old_shape = shape
x, x_ , shape = level(x, return_wo_downsample=True, shape=shape, level_idx=level_idx)
if level_idx in self.out_indices:
h, w= old_shape
seq_out.append(x_.reshape(N, h, w, -1).permute(0, 3, 1, 2))
return seq_out

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# Copyright (c) OpenMMLab. All rights reserved.
import warnings # noqa: F401,F403
from mmcv.utils import Registry
TRANSFORMER = Registry('Transformer')
MASK_ASSIGNERS = Registry('mask_assigner')
MATCH_COST = Registry('match_cost')
def build_match_cost(cfg):
"""Build Match Cost."""
return MATCH_COST.build(cfg)
def build_assigner(cfg):
"""Build Assigner."""
return MASK_ASSIGNERS.build(cfg)
def build_transformer(cfg):
"""Build Transformer."""
return TRANSFORMER.build(cfg)

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# Copyright (c) OpenMMLab. All rights reserved.
from .mask2former_head import Mask2FormerHead
from .maskformer_head import MaskFormerHead
from .msda import CustomMultiScaleDeformableAttention
__all__ = [
'MaskFormerHead',
'Mask2FormerHead',
]

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# Copyright (c) OpenMMLab. All rights reserved.
import copy
import torch
import torch.nn as nn
import torch.nn.functional as F
from mmcv.cnn import Conv2d, build_plugin_layer, caffe2_xavier_init
from mmcv.cnn.bricks.transformer import (build_positional_encoding,
build_transformer_layer_sequence)
from mmcv.ops import point_sample
from mmcv.runner import ModuleList, force_fp32
from mmseg.models.builder import HEADS, build_loss
from mmseg.models.decode_heads.decode_head import BaseDecodeHead
from ...core import build_sampler, multi_apply, reduce_mean
from ..builder import build_assigner
from ..utils import get_uncertain_point_coords_with_randomness
@HEADS.register_module()
class Mask2FormerHead(BaseDecodeHead):
"""Implements the Mask2Former head.
See `Masked-attention Mask Transformer for Universal Image
Segmentation <https://arxiv.org/pdf/2112.01527>`_ for details.
Args:
in_channels (list[int]): Number of channels in the input feature map.
feat_channels (int): Number of channels for features.
out_channels (int): Number of channels for output.
num_classes (int): Number of classes.
num_things_classes (int): Number of things.
num_stuff_classes (int): Number of stuff.
num_queries (int): Number of query in Transformer decoder.
pixel_decoder (:obj:`mmcv.ConfigDict` | dict): Config for pixel
decoder. Defaults to None.
enforce_decoder_input_project (bool, optional): Whether to add
a layer to change the embed_dim of tranformer encoder in
pixel decoder to the embed_dim of transformer decoder.
Defaults to False.
transformer_decoder (:obj:`mmcv.ConfigDict` | dict): Config for
transformer decoder. Defaults to None.
positional_encoding (:obj:`mmcv.ConfigDict` | dict): Config for
transformer decoder position encoding. Defaults to None.
loss_cls (:obj:`mmcv.ConfigDict` | dict): Config of the classification
loss. Defaults to None.
loss_mask (:obj:`mmcv.ConfigDict` | dict): Config of the mask loss.
Defaults to None.
loss_dice (:obj:`mmcv.ConfigDict` | dict): Config of the dice loss.
Defaults to None.
train_cfg (:obj:`mmcv.ConfigDict` | dict): Training config of
Mask2Former head.
test_cfg (:obj:`mmcv.ConfigDict` | dict): Testing config of
Mask2Former head.
init_cfg (dict or list[dict], optional): Initialization config dict.
Defaults to None.
"""
def __init__(self,
in_channels,
feat_channels,
out_channels,
num_classes=80,
num_things_classes=None,
num_stuff_classes=None,
num_queries=100,
num_transformer_feat_level=3,
pixel_decoder=None,
enforce_decoder_input_project=False,
transformer_decoder=None,
positional_encoding=None,
loss_cls=None,
loss_mask=None,
loss_dice=None,
train_cfg=None,
test_cfg=None,
init_cfg=None,
**kwargs):
super(Mask2FormerHead, self).__init__(
in_channels=in_channels,
channels=feat_channels,
num_classes=num_classes,
init_cfg=init_cfg,
input_transform='multiple_select',
**kwargs)
self.num_classes = num_classes
self.num_queries = num_queries
self.num_transformer_feat_level = num_transformer_feat_level
self.num_heads = transformer_decoder.transformerlayers. \
attn_cfgs.num_heads
self.num_transformer_decoder_layers = transformer_decoder.num_layers
assert pixel_decoder.encoder.transformerlayers. \
attn_cfgs.num_levels == num_transformer_feat_level
pixel_decoder_ = copy.deepcopy(pixel_decoder)
pixel_decoder_.update(
in_channels=in_channels,
feat_channels=feat_channels,
out_channels=out_channels)
self.pixel_decoder = build_plugin_layer(pixel_decoder_)[1]
self.transformer_decoder = build_transformer_layer_sequence(
transformer_decoder)
self.decoder_embed_dims = self.transformer_decoder.embed_dims
self.decoder_input_projs = ModuleList()
# from low resolution to high resolution
for _ in range(num_transformer_feat_level):
if (self.decoder_embed_dims != feat_channels
or enforce_decoder_input_project):
self.decoder_input_projs.append(
Conv2d(
feat_channels, self.decoder_embed_dims, kernel_size=1))
else:
self.decoder_input_projs.append(nn.Identity())
self.decoder_positional_encoding = build_positional_encoding(
positional_encoding)
self.query_embed = nn.Embedding(self.num_queries, feat_channels)
self.query_feat = nn.Embedding(self.num_queries, feat_channels)
# from low resolution to high resolution
self.level_embed = nn.Embedding(self.num_transformer_feat_level,
feat_channels)
self.cls_embed = nn.Linear(feat_channels, self.num_classes + 1)
self.mask_embed = nn.Sequential(
nn.Linear(feat_channels, feat_channels), nn.ReLU(inplace=True),
nn.Linear(feat_channels, feat_channels), nn.ReLU(inplace=True),
nn.Linear(feat_channels, out_channels))
self.conv_seg = None # fix a bug here (conv_seg is not used)
self.test_cfg = test_cfg
self.train_cfg = train_cfg
if train_cfg:
self.assigner = build_assigner(self.train_cfg.assigner)
self.sampler = build_sampler(self.train_cfg.sampler, context=self)
self.num_points = self.train_cfg.get('num_points', 12544)
self.oversample_ratio = self.train_cfg.get('oversample_ratio', 3.0)
self.importance_sample_ratio = self.train_cfg.get(
'importance_sample_ratio', 0.75)
self.class_weight = loss_cls.class_weight
self.loss_cls = build_loss(loss_cls)
self.loss_mask = build_loss(loss_mask)
self.loss_dice = build_loss(loss_dice)
def init_weights(self):
for m in self.decoder_input_projs:
if isinstance(m, Conv2d):
caffe2_xavier_init(m, bias=0)
self.pixel_decoder.init_weights()
for p in self.transformer_decoder.parameters():
if p.dim() > 1:
nn.init.xavier_normal_(p)
def get_targets(self, cls_scores_list, mask_preds_list, gt_labels_list,
gt_masks_list, img_metas):
"""Compute classification and mask targets for all images for a decoder
layer.
Args:
cls_scores_list (list[Tensor]): Mask score logits from a single
decoder layer for all images. Each with shape [num_queries,
cls_out_channels].
mask_preds_list (list[Tensor]): Mask logits from a single decoder
layer for all images. Each with shape [num_queries, h, w].
gt_labels_list (list[Tensor]): Ground truth class indices for all
images. Each with shape (n, ), n is the sum of number of stuff
type and number of instance in a image.
gt_masks_list (list[Tensor]): Ground truth mask for each image,
each with shape (n, h, w).
img_metas (list[dict]): List of image meta information.
Returns:
tuple[list[Tensor]]: a tuple containing the following targets.
- labels_list (list[Tensor]): Labels of all images.
Each with shape [num_queries, ].
- label_weights_list (list[Tensor]): Label weights of all
images.Each with shape [num_queries, ].
- mask_targets_list (list[Tensor]): Mask targets of all images.
Each with shape [num_queries, h, w].
- mask_weights_list (list[Tensor]): Mask weights of all images.
Each with shape [num_queries, ].
- num_total_pos (int): Number of positive samples in all
images.
- num_total_neg (int): Number of negative samples in all
images.
"""
(labels_list, label_weights_list, mask_targets_list, mask_weights_list,
pos_inds_list,
neg_inds_list) = multi_apply(self._get_target_single, cls_scores_list,
mask_preds_list, gt_labels_list,
gt_masks_list, img_metas)
num_total_pos = sum((inds.numel() for inds in pos_inds_list))
num_total_neg = sum((inds.numel() for inds in neg_inds_list))
return (labels_list, label_weights_list, mask_targets_list,
mask_weights_list, num_total_pos, num_total_neg)
def _get_target_single(self, cls_score, mask_pred, gt_labels, gt_masks,
img_metas):
"""Compute classification and mask targets for one image.
Args:
cls_score (Tensor): Mask score logits from a single decoder layer
for one image. Shape (num_queries, cls_out_channels).
mask_pred (Tensor): Mask logits for a single decoder layer for one
image. Shape (num_queries, h, w).
gt_labels (Tensor): Ground truth class indices for one image with
shape (num_gts, ).
gt_masks (Tensor): Ground truth mask for each image, each with
shape (num_gts, h, w).
img_metas (dict): Image informtation.
Returns:
tuple[Tensor]: A tuple containing the following for one image.
- labels (Tensor): Labels of each image. \
shape (num_queries, ).
- label_weights (Tensor): Label weights of each image. \
shape (num_queries, ).
- mask_targets (Tensor): Mask targets of each image. \
shape (num_queries, h, w).
- mask_weights (Tensor): Mask weights of each image. \
shape (num_queries, ).
- pos_inds (Tensor): Sampled positive indices for each \
image.
- neg_inds (Tensor): Sampled negative indices for each \
image.
"""
# sample points
num_queries = cls_score.shape[0]
num_gts = gt_labels.shape[0]
point_coords = torch.rand((1, self.num_points, 2),
device=cls_score.device)
# shape (num_queries, num_points)
mask_points_pred = point_sample(
mask_pred.unsqueeze(1), point_coords.repeat(num_queries, 1,
1)).squeeze(1)
# shape (num_gts, num_points)
gt_points_masks = point_sample(
gt_masks.unsqueeze(1).float(), point_coords.repeat(num_gts, 1,
1)).squeeze(1)
# assign and sample
assign_result = self.assigner.assign(cls_score, mask_points_pred,
gt_labels, gt_points_masks,
img_metas)
sampling_result = self.sampler.sample(assign_result, mask_pred,
gt_masks)
pos_inds = sampling_result.pos_inds
neg_inds = sampling_result.neg_inds
# label target
labels = gt_labels.new_full((self.num_queries, ),
self.num_classes,
dtype=torch.long)
labels[pos_inds] = gt_labels[sampling_result.pos_assigned_gt_inds]
label_weights = gt_labels.new_ones((self.num_queries, ))
# mask target
mask_targets = gt_masks[sampling_result.pos_assigned_gt_inds]
mask_weights = mask_pred.new_zeros((self.num_queries, ))
mask_weights[pos_inds] = 1.0
return (labels, label_weights, mask_targets, mask_weights, pos_inds,
neg_inds)
def loss_single(self, cls_scores, mask_preds, gt_labels_list,
gt_masks_list, img_metas):
"""Loss function for outputs from a single decoder layer.
Args:
cls_scores (Tensor): Mask score logits from a single decoder layer
for all images. Shape (batch_size, num_queries,
cls_out_channels). Note `cls_out_channels` should includes
background.
mask_preds (Tensor): Mask logits for a pixel decoder for all
images. Shape (batch_size, num_queries, h, w).
gt_labels_list (list[Tensor]): Ground truth class indices for each
image, each with shape (num_gts, ).
gt_masks_list (list[Tensor]): Ground truth mask for each image,
each with shape (num_gts, h, w).
img_metas (list[dict]): List of image meta information.
Returns:
tuple[Tensor]: Loss components for outputs from a single \
decoder layer.
"""
num_imgs = cls_scores.size(0)
cls_scores_list = [cls_scores[i] for i in range(num_imgs)]
mask_preds_list = [mask_preds[i] for i in range(num_imgs)]
(labels_list, label_weights_list, mask_targets_list, mask_weights_list,
num_total_pos,
num_total_neg) = self.get_targets(cls_scores_list, mask_preds_list,
gt_labels_list, gt_masks_list,
img_metas)
# shape (batch_size, num_queries)
labels = torch.stack(labels_list, dim=0)
# shape (batch_size, num_queries)
label_weights = torch.stack(label_weights_list, dim=0)
# shape (num_total_gts, h, w)
mask_targets = torch.cat(mask_targets_list, dim=0)
# shape (batch_size, num_queries)
mask_weights = torch.stack(mask_weights_list, dim=0)
# classfication loss
# shape (batch_size * num_queries, )
cls_scores = cls_scores.flatten(0, 1)
labels = labels.flatten(0, 1)
label_weights = label_weights.flatten(0, 1)
class_weight = cls_scores.new_tensor(self.class_weight)
loss_cls = self.loss_cls(
cls_scores,
labels,
label_weights,
avg_factor=class_weight[labels].sum())
num_total_masks = reduce_mean(cls_scores.new_tensor([num_total_pos]))
num_total_masks = max(num_total_masks, 1)
# extract positive ones
# shape (batch_size, num_queries, h, w) -> (num_total_gts, h, w)
mask_preds = mask_preds[mask_weights > 0]
if mask_targets.shape[0] == 0:
# zero match
loss_dice = mask_preds.sum()
loss_mask = mask_preds.sum()
return loss_cls, loss_mask, loss_dice
with torch.no_grad():
points_coords = get_uncertain_point_coords_with_randomness(
mask_preds.unsqueeze(1), None, self.num_points,
self.oversample_ratio, self.importance_sample_ratio)
# shape (num_total_gts, h, w) -> (num_total_gts, num_points)
mask_point_targets = point_sample(
mask_targets.unsqueeze(1).float(), points_coords).squeeze(1)
# shape (num_queries, h, w) -> (num_queries, num_points)
mask_point_preds = point_sample(
mask_preds.unsqueeze(1), points_coords).squeeze(1)
# dice loss
loss_dice = self.loss_dice(
mask_point_preds, mask_point_targets, avg_factor=num_total_masks)
# mask loss
# shape (num_queries, num_points) -> (num_queries * num_points, )
mask_point_preds = mask_point_preds.reshape(-1,1)
# shape (num_total_gts, num_points) -> (num_total_gts * num_points, )
mask_point_targets = mask_point_targets.reshape(-1)
loss_mask = self.loss_mask(
mask_point_preds,
mask_point_targets,
avg_factor=num_total_masks * self.num_points)
return loss_cls, loss_mask, loss_dice
@force_fp32(apply_to=('all_cls_scores', 'all_mask_preds'))
def loss(self, all_cls_scores, all_mask_preds, gt_labels_list,
gt_masks_list, img_metas):
"""Loss function.
Args:
all_cls_scores (Tensor): Classification scores for all decoder
layers with shape [num_decoder, batch_size, num_queries,
cls_out_channels].
all_mask_preds (Tensor): Mask scores for all decoder layers with
shape [num_decoder, batch_size, num_queries, h, w].
gt_labels_list (list[Tensor]): Ground truth class indices for each
image with shape (n, ). n is the sum of number of stuff type
and number of instance in a image.
gt_masks_list (list[Tensor]): Ground truth mask for each image with
shape (n, h, w).
img_metas (list[dict]): List of image meta information.
Returns:
dict[str, Tensor]: A dictionary of loss components.
"""
num_dec_layers = len(all_cls_scores)
all_gt_labels_list = [gt_labels_list for _ in range(num_dec_layers)]
all_gt_masks_list = [gt_masks_list for _ in range(num_dec_layers)]
img_metas_list = [img_metas for _ in range(num_dec_layers)]
losses_cls, losses_mask, losses_dice = multi_apply(
self.loss_single, all_cls_scores, all_mask_preds,
all_gt_labels_list, all_gt_masks_list, img_metas_list)
loss_dict = dict()
# loss from the last decoder layer
loss_dict['loss_cls'] = losses_cls[-1]
loss_dict['loss_mask'] = losses_mask[-1]
loss_dict['loss_dice'] = losses_dice[-1]
# loss from other decoder layers
num_dec_layer = 0
for loss_cls_i, loss_mask_i, loss_dice_i in zip(
losses_cls[:-1], losses_mask[:-1], losses_dice[:-1]):
loss_dict[f'd{num_dec_layer}.loss_cls'] = loss_cls_i
loss_dict[f'd{num_dec_layer}.loss_mask'] = loss_mask_i
loss_dict[f'd{num_dec_layer}.loss_dice'] = loss_dice_i
num_dec_layer += 1
return loss_dict
def forward_head(self, decoder_out, mask_feature, attn_mask_target_size):
"""Forward for head part which is called after every decoder layer.
Args:
decoder_out (Tensor): in shape (num_queries, batch_size, c).
mask_feature (Tensor): in shape (batch_size, c, h, w).
attn_mask_target_size (tuple[int, int]): target attention
mask size.
Returns:
tuple: A tuple contain three elements.
- cls_pred (Tensor): Classification scores in shape \
(batch_size, num_queries, cls_out_channels). \
Note `cls_out_channels` should includes background.
- mask_pred (Tensor): Mask scores in shape \
(batch_size, num_queries,h, w).
- attn_mask (Tensor): Attention mask in shape \
(batch_size * num_heads, num_queries, h, w).
"""
decoder_out = self.transformer_decoder.post_norm(decoder_out)
decoder_out = decoder_out.transpose(0, 1)
# shape (num_queries, batch_size, c)
cls_pred = self.cls_embed(decoder_out)
# shape (num_queries, batch_size, c)
mask_embed = self.mask_embed(decoder_out)
# shape (num_queries, batch_size, h, w)
mask_pred = torch.einsum('bqc,bchw->bqhw', mask_embed, mask_feature)
attn_mask = F.interpolate(
mask_pred,
attn_mask_target_size,
mode='bilinear',
align_corners=False)
# shape (num_queries, batch_size, h, w) ->
# (batch_size * num_head, num_queries, h, w)
attn_mask = attn_mask.flatten(2).unsqueeze(1).repeat(
(1, self.num_heads, 1, 1)).flatten(0, 1)
attn_mask = attn_mask.sigmoid() < 0.5
attn_mask = attn_mask.detach()
return cls_pred, mask_pred, attn_mask
def forward(self, feats, img_metas):
"""Forward function.
Args:
feats (list[Tensor]): Multi scale Features from the
upstream network, each is a 4D-tensor.
img_metas (list[dict]): List of image information.
Returns:
tuple: A tuple contains two elements.
- cls_pred_list (list[Tensor)]: Classification logits \
for each decoder layer. Each is a 3D-tensor with shape \
(batch_size, num_queries, cls_out_channels). \
Note `cls_out_channels` should includes background.
- mask_pred_list (list[Tensor]): Mask logits for each \
decoder layer. Each with shape (batch_size, num_queries, \
h, w).
"""
batch_size = len(img_metas)
mask_features, multi_scale_memorys = self.pixel_decoder(feats)
# multi_scale_memorys (from low resolution to high resolution)
decoder_inputs = []
decoder_positional_encodings = []
for i in range(self.num_transformer_feat_level):
decoder_input = self.decoder_input_projs[i](multi_scale_memorys[i])
# shape (batch_size, c, h, w) -> (h*w, batch_size, c)
decoder_input = decoder_input.flatten(2).permute(2, 0, 1)
level_embed = self.level_embed.weight[i].view(1, 1, -1)
decoder_input = decoder_input + level_embed
# shape (batch_size, c, h, w) -> (h*w, batch_size, c)
mask = decoder_input.new_zeros(
(batch_size, ) + multi_scale_memorys[i].shape[-2:],
dtype=torch.bool)
decoder_positional_encoding = self.decoder_positional_encoding(
mask)
decoder_positional_encoding = decoder_positional_encoding.flatten(
2).permute(2, 0, 1)
decoder_inputs.append(decoder_input)
decoder_positional_encodings.append(decoder_positional_encoding)
# shape (num_queries, c) -> (num_queries, batch_size, c)
query_feat = self.query_feat.weight.unsqueeze(1).repeat(
(1, batch_size, 1))
query_embed = self.query_embed.weight.unsqueeze(1).repeat(
(1, batch_size, 1))
cls_pred_list = []
mask_pred_list = []
cls_pred, mask_pred, attn_mask = self.forward_head(
query_feat, mask_features, multi_scale_memorys[0].shape[-2:])
cls_pred_list.append(cls_pred)
mask_pred_list.append(mask_pred)
for i in range(self.num_transformer_decoder_layers):
level_idx = i % self.num_transformer_feat_level
# if a mask is all True(all background), then set it all False.
attn_mask[torch.where(
attn_mask.sum(-1) == attn_mask.shape[-1])] = False
# cross_attn + self_attn
layer = self.transformer_decoder.layers[i]
attn_masks = [attn_mask, None]
query_feat = layer(
query=query_feat,
key=decoder_inputs[level_idx],
value=decoder_inputs[level_idx],
query_pos=query_embed,
key_pos=decoder_positional_encodings[level_idx],
attn_masks=attn_masks,
query_key_padding_mask=None,
# here we do not apply masking on padded region
key_padding_mask=None)
cls_pred, mask_pred, attn_mask = self.forward_head(
query_feat, mask_features, multi_scale_memorys[
(i + 1) % self.num_transformer_feat_level].shape[-2:])
cls_pred_list.append(cls_pred)
mask_pred_list.append(mask_pred)
return cls_pred_list, mask_pred_list
def forward_train(self, x, img_metas, gt_semantic_seg, gt_labels,
gt_masks):
"""Forward function for training mode.
Args:
x (list[Tensor]): Multi-level features from the upstream network,
each is a 4D-tensor.
img_metas (list[Dict]): List of image information.
gt_semantic_seg (list[tensor]):Each element is the ground truth
of semantic segmentation with the shape (N, H, W).
train_cfg (dict): The training config, which not been used in
maskformer.
gt_labels (list[Tensor]): Each element is ground truth labels of
each box, shape (num_gts,).
gt_masks (list[BitmapMasks]): Each element is masks of instances
of a image, shape (num_gts, h, w).
Returns:
losses (dict[str, Tensor]): a dictionary of loss components
"""
# forward
all_cls_scores, all_mask_preds = self(x, img_metas)
# loss
losses = self.loss(all_cls_scores, all_mask_preds, gt_labels, gt_masks,
img_metas)
return losses
def forward_test(self, inputs, img_metas, test_cfg):
"""Test segment without test-time aumengtation.
Only the output of last decoder layers was used.
Args:
inputs (list[Tensor]): Multi-level features from the
upstream network, each is a 4D-tensor.
img_metas (list[dict]): List of image information.
test_cfg (dict): Testing config.
Returns:
seg_mask (Tensor): Predicted semantic segmentation logits.
"""
all_cls_scores, all_mask_preds = self(inputs, img_metas)
cls_score, mask_pred = all_cls_scores[-1], all_mask_preds[-1]
ori_h, ori_w, _ = img_metas[0]['ori_shape']
# semantic inference
cls_score = F.softmax(cls_score, dim=-1)[..., :-1]
mask_pred = mask_pred.sigmoid()
seg_mask = torch.einsum('bqc,bqhw->bchw', cls_score, mask_pred)
return seg_mask

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import torch
import torch.nn as nn
import torch.nn.functional as F
from mmcv.cnn import Conv2d, build_plugin_layer, kaiming_init
from mmcv.cnn.bricks.transformer import (build_positional_encoding,
build_transformer_layer_sequence)
from mmcv.runner import force_fp32
from mmseg.models.builder import HEADS, build_loss
from mmseg.models.decode_heads.decode_head import BaseDecodeHead
from ...core import multi_apply, reduce_mean
from ..builder import build_assigner, build_transformer
@HEADS.register_module()
class MaskFormerHead(BaseDecodeHead):
"""Implements the MaskFormer head.
See `paper: Per-Pixel Classification is Not All You Need
for Semantic Segmentation<https://arxiv.org/pdf/2107.06278>`
for details.
Args:
in_channels (list[int]): Number of channels in the input feature map.
feat_channels (int): Number channels for feature.
out_channels (int): Number channels for output.
num_things_classes (int): Number of things.
num_stuff_classes (int): Number of stuff.
num_queries (int): Number of query in Transformer.
pixel_decoder (obj:`mmcv.ConfigDict`|dict): Config for pixel decoder.
Defaults to None.
enforce_decoder_input_project (bool, optional): Whether to add a layer
to change the embed_dim of tranformer encoder in pixel decoder to
the embed_dim of transformer decoder. Defaults to False.
transformer_decoder (obj:`mmcv.ConfigDict`|dict): Config for
transformer decoder. Defaults to None.
positional_encoding (obj:`mmcv.ConfigDict`|dict): Config for
transformer decoder position encoding. Defaults to None.
loss_cls (obj:`mmcv.ConfigDict`|dict): Config of the classification
loss. Defaults to `CrossEntropyLoss`.
loss_mask (obj:`mmcv.ConfigDict`|dict): Config of the mask loss.
Defaults to `FocalLoss`.
loss_dice (obj:`mmcv.ConfigDict`|dict): Config of the dice loss.
Defaults to `DiceLoss`.
train_cfg (obj:`mmcv.ConfigDict`|dict): Training config of Maskformer
head.
test_cfg (obj:`mmcv.ConfigDict`|dict): Testing config of Maskformer
head.
init_cfg (dict or list[dict], optional): Initialization config dict.
Defaults to None.
"""
def __init__(self,
out_channels,
num_queries=100,
pixel_decoder=None,
enforce_decoder_input_project=False,
transformer_decoder=None,
positional_encoding=None,
loss_cls=dict(
type='CrossEntropyLoss',
bg_cls_weight=0.1,
use_sigmoid=False,
loss_weight=1.0,
class_weight=1.0),
loss_mask=dict(
type='FocalLoss',
use_sigmoid=True,
gamma=2.0,
alpha=0.25,
loss_weight=20.0),
loss_dice=dict(
type='DiceLoss',
use_sigmoid=True,
activate=True,
naive_dice=True,
loss_weight=1.0),
assigner=dict(
type='MaskHungarianAssigner',
cls_cost=dict(type='ClassificationCost', weight=1.),
dice_cost=dict(type='DiceCost', weight=1.0, pred_act=True,
eps=1.0),
mask_cost=dict(type='MaskFocalLossCost', weight=20.0)),
**kwargs):
super(MaskFormerHead, self).__init__(input_transform='multiple_select',
**kwargs)
self.num_queries = num_queries
pixel_decoder.update(
in_channels=self.in_channels,
feat_channels=self.channels,
out_channels=out_channels)
self.pixel_decoder = build_plugin_layer(pixel_decoder)[1]
self.transformer_decoder = build_transformer_layer_sequence(
transformer_decoder)
self.decoder_embed_dims = self.transformer_decoder.embed_dims
pixel_decoder_type = pixel_decoder.get('type')
if pixel_decoder_type == 'PixelDecoder' and (
self.decoder_embed_dims != self.in_channels[-1]
or enforce_decoder_input_project):
self.decoder_input_proj = Conv2d(
self.in_channels[-1], self.decoder_embed_dims, kernel_size=1)
else:
self.decoder_input_proj = nn.Identity()
self.decoder_pe = build_positional_encoding(positional_encoding)
self.query_embed = nn.Embedding(self.num_queries, out_channels)
self.cls_embed = nn.Linear(self.channels, self.num_classes + 1)
self.mask_embed = nn.Sequential(
nn.Linear(self.channels, self.channels), nn.ReLU(inplace=True),
nn.Linear(self.channels, self.channels), nn.ReLU(inplace=True),
nn.Linear(self.channels, out_channels))
self.assigner = build_assigner(assigner)
self.bg_cls_weight = 0
class_weight = loss_cls.get('class_weight', None)
if class_weight is not None and (self.__class__ is MaskFormerHead):
assert isinstance(class_weight, float), 'Expected ' \
'class_weight to have type float. Found ' \
f'{type(class_weight)}.'
# NOTE following the official MaskFormerHead repo, bg_cls_weight
# means relative classification weight of the VOID class.
bg_cls_weight = loss_cls.get('bg_cls_weight', class_weight)
assert isinstance(bg_cls_weight, float), 'Expected ' \
'bg_cls_weight to have type float. Found ' \
f'{type(bg_cls_weight)}.'
class_weight = (self.num_classes + 1) * [class_weight]
# set VOID class as the last indice
class_weight[self.num_classes] = bg_cls_weight
loss_cls.update({'class_weight': class_weight})
if 'bg_cls_weight' in loss_cls:
loss_cls.pop('bg_cls_weight')
self.bg_cls_weight = bg_cls_weight
assert loss_cls['loss_weight'] == assigner['cls_cost']['weight'], \
'The classification weight for loss and matcher should be' \
'exactly the same.'
assert loss_dice['loss_weight'] == assigner['dice_cost']['weight'], \
f'The dice weight for loss and matcher' \
f'should be exactly the same.'
assert loss_mask['loss_weight'] == assigner['mask_cost']['weight'], \
'The focal weight for loss and matcher should be' \
'exactly the same.'
self.loss_cls = build_loss(loss_cls)
self.loss_mask = build_loss(loss_mask)
self.loss_dice = build_loss(loss_dice)
self.init_weights()
def init_weights(self):
kaiming_init(self.decoder_input_proj, a=1)
def get_targets(self, cls_scores_list, mask_preds_list, gt_labels_list,
gt_masks_list, img_metas):
"""Compute classification and mask targets for all images for a decoder
layer.
Args:
cls_scores_list (list[Tensor]): Mask score logits from a single
decoder layer for all images. Each with shape [num_queries,
cls_out_channels].
mask_preds_list (list[Tensor]): Mask logits from a single decoder
layer for all images. Each with shape [num_queries, h, w].
gt_labels_list (list[Tensor]): Ground truth class indices for all
images. Each with shape (n, ), n is the sum of number of stuff
type and number of instance in a image.
gt_masks_list (list[Tensor]): Ground truth mask for each image,
each with shape (n, h, w).
img_metas (list[dict]): List of image meta information.
Returns:
tuple[list[Tensor]]: a tuple containing the following targets.
- labels_list (list[Tensor]): Labels of all images.
Each with shape [num_queries, ].
- label_weights_list (list[Tensor]): Label weights of all
images.Each with shape [num_queries, ].
- mask_targets_list (list[Tensor]): Mask targets of all images.
Each with shape [num_queries, h, w].
- mask_weights_list (list[Tensor]): Mask weights of all images.
Each with shape [num_queries, ].
- num_total_pos (int): Number of positive samples in all
images.
- num_total_neg (int): Number of negative samples in all
images.
"""
(labels_list, label_weights_list, mask_targets_list, mask_weights_list,
pos_inds_list,
neg_inds_list) = multi_apply(self._get_target_single, cls_scores_list,
mask_preds_list, gt_labels_list,
gt_masks_list, img_metas)
num_total_pos = sum((inds.numel() for inds in pos_inds_list))
num_total_neg = sum((inds.numel() for inds in neg_inds_list))
return (labels_list, label_weights_list, mask_targets_list,
mask_weights_list, num_total_pos, num_total_neg)
def _get_target_single(self, cls_score, mask_pred, gt_labels, gt_masks,
img_metas):
"""Compute classification and mask targets for one image.
Args:
cls_score (Tensor): Mask score logits from a single decoder layer
for one image. Shape [num_queries, cls_out_channels].
mask_pred (Tensor): Mask logits for a single decoder layer for one
image. Shape [num_queries, h, w].
gt_labels (Tensor): Ground truth class indices for one image with
shape (n, ). n is the sum of number of stuff type and number
of instance in a image.
gt_masks (Tensor): Ground truth mask for each image, each with
shape (n, h, w).
img_metas (dict): Image informtation.
Returns:
tuple[Tensor]: a tuple containing the following for one image.
- labels (Tensor): Labels of each image.
shape [num_queries, ].
- label_weights (Tensor): Label weights of each image.
shape [num_queries, ].
- mask_targets (Tensor): Mask targets of each image.
shape [num_queries, h, w].
- mask_weights (Tensor): Mask weights of each image.
shape [num_queries, ].
- pos_inds (Tensor): Sampled positive indices for each image.
- neg_inds (Tensor): Sampled negative indices for each image.
"""
target_shape = mask_pred.shape[-2:]
gt_masks_downsampled = F.interpolate(
gt_masks.unsqueeze(1).float(), target_shape,
mode='nearest').squeeze(1).long()
# assign and sample
assign_result = self.assigner.assign(cls_score, mask_pred, gt_labels,
gt_masks_downsampled, img_metas)
# pos_ind: range from 1 to (self.num_classes)
# which represents the positive index
pos_inds = torch.nonzero(assign_result.gt_inds > 0,
as_tuple=False).squeeze(-1).unique()
neg_inds = torch.nonzero(assign_result.gt_inds == 0,
as_tuple=False).squeeze(-1).unique()
pos_assigned_gt_inds = assign_result.gt_inds[pos_inds] - 1
# label target
labels = gt_labels.new_full((self.num_queries, ),
self.num_classes,
dtype=torch.long)
labels[pos_inds] = gt_labels[pos_assigned_gt_inds]
label_weights = gt_labels.new_ones(self.num_queries)
# mask target
mask_targets = gt_masks[pos_assigned_gt_inds, :]
mask_weights = mask_pred.new_zeros((self.num_queries, ))
mask_weights[pos_inds] = 1.0
return (labels, label_weights, mask_targets, mask_weights, pos_inds,
neg_inds)
@force_fp32(apply_to=('all_cls_scores', 'all_mask_preds'))
def loss(self, all_cls_scores, all_mask_preds, gt_labels_list,
gt_masks_list, img_metas):
"""Loss function.
Args:
all_cls_scores (Tensor): Classification scores for all decoder
layers with shape [num_decoder, batch_size, num_queries,
cls_out_channels].
all_mask_preds (Tensor): Mask scores for all decoder layers with
shape [num_decoder, batch_size, num_queries, h, w].
gt_labels_list (list[Tensor]): Ground truth class indices for each
image with shape (n, ). n is the sum of number of stuff type
and number of instance in a image.
gt_masks_list (list[Tensor]): Ground truth mask for each image with
shape (n, h, w).
img_metas (list[dict]): List of image meta information.
Returns:
dict[str, Tensor]: A dictionary of loss components.
"""
num_dec_layers = len(all_cls_scores)
all_gt_labels_list = [gt_labels_list for _ in range(num_dec_layers)]
all_gt_masks_list = [gt_masks_list for _ in range(num_dec_layers)]
img_metas_list = [img_metas for _ in range(num_dec_layers)]
losses_cls, losses_mask, losses_dice = multi_apply(
self.loss_single, all_cls_scores, all_mask_preds,
all_gt_labels_list, all_gt_masks_list, img_metas_list)
loss_dict = dict()
# loss from the last decoder layer
loss_dict['loss_cls'] = losses_cls[-1]
loss_dict['loss_mask'] = losses_mask[-1]
loss_dict['loss_dice'] = losses_dice[-1]
# loss from other decoder layers
num_dec_layer = 0
for loss_cls_i, loss_mask_i, loss_dice_i in zip(
losses_cls[:-1], losses_mask[:-1], losses_dice[:-1]):
loss_dict[f'd{num_dec_layer}.loss_cls'] = loss_cls_i
loss_dict[f'd{num_dec_layer}.loss_mask'] = loss_mask_i
loss_dict[f'd{num_dec_layer}.loss_dice'] = loss_dice_i
num_dec_layer += 1
return loss_dict
def loss_single(self, cls_scores, mask_preds, gt_labels_list,
gt_masks_list, img_metas):
"""Loss function for outputs from a single decoder layer.
Args:
cls_scores (Tensor): Mask score logits from a single decoder layer
for all images. Shape [batch_size, num_queries,
cls_out_channels].
mask_preds (Tensor): Mask logits for a pixel decoder for all
images. Shape [batch_size, num_queries, h, w].
gt_labels_list (list[Tensor]): Ground truth class indices for each
image, each with shape (n, ). n is the sum of number of stuff
types and number of instances in a image.
gt_masks_list (list[Tensor]): Ground truth mask for each image,
each with shape (n, h, w).
img_metas (list[dict]): List of image meta information.
Returns:
tuple[Tensor]:Loss components for outputs from a single decoder
layer.
"""
num_imgs = cls_scores.size(0)
cls_scores_list = [cls_scores[i] for i in range(num_imgs)]
mask_preds_list = [mask_preds[i] for i in range(num_imgs)]
(labels_list, label_weights_list, mask_targets_list, mask_weights_list,
num_total_pos,
num_total_neg) = self.get_targets(cls_scores_list, mask_preds_list,
gt_labels_list, gt_masks_list,
img_metas)
# shape [batch_size, num_queries]
labels = torch.stack(labels_list, dim=0)
# shape [batch_size, num_queries]
label_weights = torch.stack(label_weights_list, dim=0)
# shape [num_gts, h, w]
mask_targets = torch.cat(mask_targets_list, dim=0)
# shape [batch_size, num_queries]
mask_weights = torch.stack(mask_weights_list, dim=0)
# classfication loss
# shape [batch_size * num_queries, ]
cls_scores = cls_scores.flatten(0, 1)
# shape [batch_size * num_queries, ]
labels = labels.flatten(0, 1)
# shape [batch_size* num_queries, ]
label_weights = label_weights.flatten(0, 1)
class_weight = cls_scores.new_ones(self.num_classes + 1)
class_weight[-1] = self.bg_cls_weight
loss_cls = self.loss_cls(
cls_scores,
labels,
label_weights,
avg_factor=class_weight[labels].sum())
num_total_masks = reduce_mean(cls_scores.new_tensor([num_total_pos]))
num_total_masks = max(num_total_masks, 1)
# extract positive ones
mask_preds = mask_preds[mask_weights > 0]
target_shape = mask_targets.shape[-2:]
if mask_targets.shape[0] == 0:
# zero match
loss_dice = mask_preds.sum()
loss_mask = mask_preds.sum()
return loss_cls, loss_mask, loss_dice
# upsample to shape of target
# shape [num_gts, h, w]
mask_preds = F.interpolate(
mask_preds.unsqueeze(1),
target_shape,
mode='bilinear',
align_corners=False).squeeze(1)
# dice loss
loss_dice = self.loss_dice(
mask_preds, mask_targets, avg_factor=num_total_masks)
# mask loss
# FocalLoss support input of shape [n, num_class]
h, w = mask_preds.shape[-2:]
# shape [num_gts, h, w] -> [num_gts * h * w, 1]
mask_preds = mask_preds.reshape(-1, 1)
# shape [num_gts, h, w] -> [num_gts * h * w]
mask_targets = mask_targets.reshape(-1)
# target is (1 - mask_targets) !!!
print("mask_pred:", mask_preds.shape)
print("mask_targets:", mask_targets.shape)
loss_mask = self.loss_mask(
mask_preds, 1 - mask_targets, avg_factor=num_total_masks * h * w)
return loss_cls, loss_mask, loss_dice
def forward(self, feats, img_metas):
"""Forward function.
Args:
feats (list[Tensor]): Features from the upstream network, each
is a 4D-tensor.
img_metas (list[dict]): List of image information.
Returns:
all_cls_scores (Tensor): Classification scores for each
scale level. Each is a 4D-tensor with shape
[num_decoder, batch_size, num_queries, cls_out_channels].
Note `cls_out_channels` should includes background.
all_mask_preds (Tensor): Mask scores for each decoder
layer. Each with shape [num_decoder, batch_size,
num_queries, h, w].
"""
batch_size = len(img_metas)
input_img_h, input_img_w = img_metas[0]['pad_shape'][:-1]
# input_img_h, input_img_w = img_metas[0]['batch_input_shape']
padding_mask = feats[-1].new_ones(
(batch_size, input_img_h, input_img_w), dtype=torch.float32)
for i in range(batch_size):
img_h, img_w, _ = img_metas[i]['img_shape']
padding_mask[i, :img_h, :img_w] = 0
padding_mask = F.interpolate(
padding_mask.unsqueeze(1),
size=feats[-1].shape[-2:],
mode='nearest').to(torch.bool).squeeze(1)
# when backbone is swin, memory is output of last stage of swin.
# when backbone is r50, memory is output of tranformer encoder.
mask_features, memory = self.pixel_decoder(feats, img_metas)
pos_embed = self.decoder_pe(padding_mask)
memory = self.decoder_input_proj(memory)
# shape [batch_size, c, h, w] -> [h*w, batch_size, c]
memory = memory.flatten(2).permute(2, 0, 1)
pos_embed = pos_embed.flatten(2).permute(2, 0, 1)
# shape [batch_size, h * w]
padding_mask = padding_mask.flatten(1)
# shape = [num_queries, embed_dims]
query_embed = self.query_embed.weight
# shape = [num_queries, batch_size, embed_dims]
query_embed = query_embed.unsqueeze(1).repeat(1, batch_size, 1)
target = torch.zeros_like(query_embed)
# shape [num_decoder, num_queries, batch_size, embed_dims]
out_dec = self.transformer_decoder(
query=target,
key=memory,
value=memory,
key_pos=pos_embed,
query_pos=query_embed,
key_padding_mask=padding_mask)
# shape [num_decoder, batch_size, num_queries, embed_dims]
out_dec = out_dec.transpose(1, 2)
# cls_scores
all_cls_scores = self.cls_embed(out_dec)
# mask_preds
mask_embed = self.mask_embed(out_dec)
all_mask_preds = torch.einsum('lbqc,bchw->lbqhw', mask_embed,
mask_features)
return all_cls_scores, all_mask_preds
def forward_train(self,
x,
img_metas,
gt_semantic_seg,
gt_labels,
gt_masks):
"""Forward function for training mode.
Args:
x (list[Tensor]): Multi-level features from the upstream network,
each is a 4D-tensor.
img_metas (list[Dict]): List of image information.
gt_semantic_seg (list[tensor]):Each element is the ground truth
of semantic segmentation with the shape (N, H, W).
train_cfg (dict): The training config, which not been used in
maskformer.
gt_labels (list[Tensor]): Each element is ground truth labels of
each box, shape (num_gts,).
gt_masks (list[BitmapMasks]): Each element is masks of instances
of a image, shape (num_gts, h, w).
Returns:
losses (dict[str, Tensor]): a dictionary of loss components
"""
# forward
all_cls_scores, all_mask_preds = self(x, img_metas)
# loss
losses = self.loss(all_cls_scores, all_mask_preds, gt_labels, gt_masks,
img_metas)
return losses
def forward_test(self, inputs, img_metas, test_cfg):
"""Test segment without test-time aumengtation.
Only the output of last decoder layers was used.
Args:
inputs (list[Tensor]): Multi-level features from the
upstream network, each is a 4D-tensor.
img_metas (list[dict]): List of image information.
test_cfg (dict): Testing config.
Returns:
seg_mask (Tensor): Predicted semantic segmentation logits.
"""
all_cls_scores, all_mask_preds = self(inputs, img_metas)
cls_score, mask_pred = all_cls_scores[-1], all_mask_preds[-1]
ori_h, ori_w, _ = img_metas[0]['ori_shape']
# semantic inference
cls_score = F.softmax(cls_score, dim=-1)[..., :-1]
mask_pred = mask_pred.sigmoid()
seg_mask = torch.einsum('bqc,bqhw->bchw', cls_score, mask_pred)
return seg_mask

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# --------------------------------------------------------
# DCNv4
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
import torch
from torch.cuda.amp import custom_bwd, custom_fwd
from torch.autograd.function import Function, once_differentiable
from mmcv.utils import ext_loader
ext_module = ext_loader.load_ext(
'_ext', ['ms_deform_attn_backward', 'ms_deform_attn_forward'])
class MultiScaleDeformableAttnFunction_fp16(Function):
@staticmethod
@custom_fwd(cast_inputs=torch.float16)
def forward(ctx, value, value_spatial_shapes, value_level_start_index,
sampling_locations, attention_weights, im2col_step):
"""GPU version of multi-scale deformable attention.
Args:
value (Tensor): The value has shape
(bs, num_keys, mum_heads, embed_dims//num_heads)
value_spatial_shapes (Tensor): Spatial shape of
each feature map, has shape (num_levels, 2),
last dimension 2 represent (h, w)
sampling_locations (Tensor): The location of sampling points,
has shape
(bs ,num_queries, num_heads, num_levels, num_points, 2),
the last dimension 2 represent (x, y).
attention_weights (Tensor): The weight of sampling points used
when calculate the attention, has shape
(bs ,num_queries, num_heads, num_levels, num_points),
im2col_step (Tensor): The step used in image to column.
Returns:
Tensor: has shape (bs, num_queries, embed_dims)
"""
ctx.im2col_step = im2col_step
output = ext_module.ms_deform_attn_forward(
value,
value_spatial_shapes,
value_level_start_index,
sampling_locations,
attention_weights,
im2col_step=ctx.im2col_step)
ctx.save_for_backward(value, value_spatial_shapes,
value_level_start_index, sampling_locations,
attention_weights)
return output
@staticmethod
@once_differentiable
@custom_bwd
def backward(ctx, grad_output):
"""GPU version of backward function.
Args:
grad_output (Tensor): Gradient
of output tensor of forward.
Returns:
Tuple[Tensor]: Gradient
of input tensors in forward.
"""
value, value_spatial_shapes, value_level_start_index, \
sampling_locations, attention_weights = ctx.saved_tensors
grad_value = torch.zeros_like(value)
grad_sampling_loc = torch.zeros_like(sampling_locations)
grad_attn_weight = torch.zeros_like(attention_weights)
ext_module.ms_deform_attn_backward(
value,
value_spatial_shapes,
value_level_start_index,
sampling_locations,
attention_weights,
grad_output.contiguous(),
grad_value,
grad_sampling_loc,
grad_attn_weight,
im2col_step=ctx.im2col_step)
return grad_value, None, None, \
grad_sampling_loc, grad_attn_weight, None
class MultiScaleDeformableAttnFunction_fp32_old(Function):
@staticmethod
@custom_fwd(cast_inputs=torch.float32)
def forward(ctx, value, value_spatial_shapes, value_level_start_index,
sampling_locations, attention_weights, im2col_step):
"""GPU version of multi-scale deformable attention.
Args:
value (Tensor): The value has shape
(bs, num_keys, mum_heads, embed_dims//num_heads)
value_spatial_shapes (Tensor): Spatial shape of
each feature map, has shape (num_levels, 2),
last dimension 2 represent (h, w)
sampling_locations (Tensor): The location of sampling points,
has shape
(bs ,num_queries, num_heads, num_levels, num_points, 2),
the last dimension 2 represent (x, y).
attention_weights (Tensor): The weight of sampling points used
when calculate the attention, has shape
(bs ,num_queries, num_heads, num_levels, num_points),
im2col_step (Tensor): The step used in image to column.
Returns:
Tensor: has shape (bs, num_queries, embed_dims)
"""
ctx.im2col_step = im2col_step
output = ext_module.ms_deform_attn_forward(
value.to(torch.float),
value_spatial_shapes,
value_level_start_index,
sampling_locations.to(torch.float),
attention_weights.to(torch.float),
im2col_step=ctx.im2col_step).to(torch.float16)
ctx.save_for_backward(value, value_spatial_shapes,
value_level_start_index, sampling_locations,
attention_weights)
return output
@staticmethod
@once_differentiable
@custom_bwd
def backward(ctx, grad_output):
"""GPU version of backward function.
Args:
grad_output (Tensor): Gradient
of output tensor of forward.
Returns:
Tuple[Tensor]: Gradient
of input tensors in forward.
"""
value, value_spatial_shapes, value_level_start_index, \
sampling_locations, attention_weights = ctx.saved_tensors
grad_value = torch.zeros_like(value)
grad_sampling_loc = torch.zeros_like(sampling_locations)
grad_attn_weight = torch.zeros_like(attention_weights)
ext_module.ms_deform_attn_backward(
value,
value_spatial_shapes,
value_level_start_index,
sampling_locations,
attention_weights,
grad_output.contiguous(),
grad_value,
grad_sampling_loc,
grad_attn_weight,
im2col_step=ctx.im2col_step)
return grad_value, None, None, \
grad_sampling_loc, grad_attn_weight, None
# Copyright (c) OpenMMLab. All rights reserved.
import math
import warnings
import torch
import torch.nn as nn
import torch.nn.functional as F
from torch.autograd.function import Function, once_differentiable
from mmcv import deprecated_api_warning
from mmcv.cnn import constant_init, xavier_init
from mmcv.cnn.bricks.registry import ATTENTION
from mmcv.runner import BaseModule
ext_module = ext_loader.load_ext(
'_ext', ['ms_deform_attn_backward', 'ms_deform_attn_forward'])
import functools
import time
from collections import defaultdict
import torch
from mmcv.ops import MultiScaleDeformableAttention
@ATTENTION.register_module()
class CustomMultiScaleDeformableAttention(MultiScaleDeformableAttention):
"""An attention module used in Deformable-Detr.
`Deformable DETR: Deformable Transformers for End-to-End Object Detection.
<https://arxiv.org/pdf/2010.04159.pdf>`_.
Args:
embed_dims (int): The embedding dimension of Attention.
Default: 256.
num_heads (int): Parallel attention heads. Default: 64.
num_levels (int): The number of feature map used in
Attention. Default: 4.
num_points (int): The number of sampling points for
each query in each head. Default: 4.
im2col_step (int): The step used in image_to_column.
Default: 64.
dropout (float): A Dropout layer on `inp_identity`.
Default: 0.1.
batch_first (bool): Key, Query and Value are shape of
(batch, n, embed_dim)
or (n, batch, embed_dim). Default to False.
norm_cfg (dict): Config dict for normalization layer.
Default: None.
init_cfg (obj:`mmcv.ConfigDict`): The Config for initialization.
Default: None.
"""
def __init__(self,
use_flash=False,
use_softmax=True,
**kwargs
):
super().__init__(**kwargs)
self.use_flash = use_flash
self.use_softmax = use_softmax
@deprecated_api_warning({'residual': 'identity'},
cls_name='FlashMultiScaleDeformableAttention')
# @run_time('ms_attention')
def forward(self,
query,
key=None,
value=None,
identity=None,
query_pos=None,
key_padding_mask=None,
reference_points=None,
spatial_shapes=None,
level_start_index=None,
**kwargs):
"""Forward Function of MultiScaleDeformAttention.
Args:
query (torch.Tensor): Query of Transformer with shape
(num_query, bs, embed_dims).
key (torch.Tensor): The key tensor with shape
`(num_key, bs, embed_dims)`.
value (torch.Tensor): The value tensor with shape
`(num_key, bs, embed_dims)`.
identity (torch.Tensor): The tensor used for addition, with the
same shape as `query`. Default None. If None,
`query` will be used.
query_pos (torch.Tensor): The positional encoding for `query`.
Default: None.
key_pos (torch.Tensor): The positional encoding for `key`. Default
None.
reference_points (torch.Tensor): The normalized reference
points with shape (bs, num_query, num_levels, 2),
all elements is range in [0, 1], top-left (0,0),
bottom-right (1, 1), including padding area.
or (N, Length_{query}, num_levels, 4), add
additional two dimensions is (w, h) to
form reference boxes.
key_padding_mask (torch.Tensor): ByteTensor for `query`, with
shape [bs, num_key].
spatial_shapes (torch.Tensor): Spatial shape of features in
different levels. With shape (num_levels, 2),
last dimension represents (h, w).
level_start_index (torch.Tensor): The start index of each level.
A tensor has shape ``(num_levels, )`` and can be represented
as [0, h_0*w_0, h_0*w_0+h_1*w_1, ...].
Returns:
torch.Tensor: forwarded results with shape
[num_query, bs, embed_dims].
"""
if value is None:
value = query
if identity is None:
identity = query
if query_pos is not None:
query = query + query_pos
if not self.batch_first:
# change to (bs, num_query ,embed_dims)
query = query.permute(1, 0, 2)
value = value.permute(1, 0, 2)
bs, num_query, _ = query.shape
bs, num_value, _ = value.shape
assert (spatial_shapes[:, 0] * spatial_shapes[:, 1]).sum() == num_value
value = self.value_proj(value)
if key_padding_mask is not None:
value = value.masked_fill(key_padding_mask[..., None], 0.0)
value = value.view(bs, num_value, self.num_heads, -1)
query = query.to(value.dtype)
sampling_offsets = self.sampling_offsets(query).view(
bs, num_query, self.num_heads, self.num_levels, self.num_points, 2)
attention_weights = self.attention_weights(query).view(
bs, num_query, self.num_heads, self.num_levels * self.num_points)
if not self.use_flash:
if self.use_softmax:
attention_weights = attention_weights.softmax(-1)
attention_weights = attention_weights.view(bs, num_query,
self.num_heads,
self.num_levels,
self.num_points)
else:
attention_weights = attention_weights.view(bs, num_query,
self.num_heads,
self.num_levels,
self.num_points, 1)
if reference_points.shape[-1] == 2:
offset_normalizer = torch.stack(
[spatial_shapes[..., 1], spatial_shapes[..., 0]], -1)
sampling_locations = reference_points[:, :, None, :, None, :] \
+ sampling_offsets \
/ offset_normalizer[None, None, None, :, None, :]
elif reference_points.shape[-1] == 4:
sampling_locations = reference_points[:, :, None, :, None, :2] \
+ sampling_offsets / self.num_points \
* reference_points[:, :, None, :, None, 2:] \
* 0.5
else:
raise ValueError(
f'Last dim of reference_points must be'
f' 2 or 4, but get {reference_points.shape[-1]} instead.')
sampling_locations = sampling_locations.to(sampling_offsets.dtype)
if torch.cuda.is_available() and value.is_cuda:
if self.use_flash:
assert False
else:
MultiScaleDeformableAttnFunction = MultiScaleDeformableAttnFunction_fp32_old
output = MultiScaleDeformableAttnFunction.apply(
value, spatial_shapes, level_start_index, sampling_locations,
attention_weights, self.im2col_step)
else:
output = multi_scale_deformable_attn_pytorch(
value, spatial_shapes, sampling_locations, attention_weights)
output = self.output_proj(output.to(value.dtype))
if not self.batch_first:
# (num_query, bs ,embed_dims)
output = output.permute(1, 0, 2)
return self.dropout(output) + identity

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# Copyright (c) OpenMMLab. All rights reserved.
from .cross_entropy_loss import (CrossEntropyLoss, binary_cross_entropy,
cross_entropy, mask_cross_entropy)
from .dice_loss import DiceLoss
from .focal_loss import FocalLoss
from .match_costs import (ClassificationCost, CrossEntropyLossCost, DiceCost,
MaskFocalLossCost)
__all__ = [
'cross_entropy', 'binary_cross_entropy', 'mask_cross_entropy',
'CrossEntropyLoss', 'DiceLoss', 'FocalLoss', 'ClassificationCost',
'MaskFocalLossCost', 'DiceCost', 'CrossEntropyLossCost'
]

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# Copyright (c) OpenMMLab. All rights reserved.
import warnings
import torch
import torch.nn as nn
import torch.nn.functional as F
from mmseg.models.builder import LOSSES
from mmseg.models.losses.utils import get_class_weight, weight_reduce_loss
def cross_entropy(pred,
label,
weight=None,
class_weight=None,
reduction='mean',
avg_factor=None,
ignore_index=-100,
avg_non_ignore=False):
"""cross_entropy. The wrapper function for :func:`F.cross_entropy`
Args:
pred (torch.Tensor): The prediction with shape (N, 1).
label (torch.Tensor): The learning label of the prediction.
weight (torch.Tensor, optional): Sample-wise loss weight.
Default: None.
class_weight (list[float], optional): The weight for each class.
Default: None.
reduction (str, optional): The method used to reduce the loss.
Options are 'none', 'mean' and 'sum'. Default: 'mean'.
avg_factor (int, optional): Average factor that is used to average
the loss. Default: None.
ignore_index (int): Specifies a target value that is ignored and
does not contribute to the input gradients. When
``avg_non_ignore `` is ``True``, and the ``reduction`` is
``''mean''``, the loss is averaged over non-ignored targets.
Defaults: -100.
avg_non_ignore (bool): The flag decides to whether the loss is
only averaged over non-ignored targets. Default: False.
`New in version 0.23.0.`
"""
# class_weight is a manual rescaling weight given to each class.
# If given, has to be a Tensor of size C element-wise losses
loss = F.cross_entropy(
pred,
label,
weight=class_weight,
reduction='none',
ignore_index=ignore_index)
# apply weights and do the reduction
# average loss over non-ignored elements
# pytorch's official cross_entropy average loss over non-ignored elements
# refer to https://github.com/pytorch/pytorch/blob/56b43f4fec1f76953f15a627694d4bba34588969/torch/nn/functional.py#L2660 # noqa
if (avg_factor is None) and avg_non_ignore and reduction == 'mean':
avg_factor = label.numel() - (label == ignore_index).sum().item()
if weight is not None:
weight = weight.float()
loss = weight_reduce_loss(
loss, weight=weight, reduction=reduction, avg_factor=avg_factor)
return loss
def _expand_onehot_labels(labels, label_weights, target_shape, ignore_index):
"""Expand onehot labels to match the size of prediction."""
bin_labels = labels.new_zeros(target_shape)
valid_mask = (labels >= 0) & (labels != ignore_index)
inds = torch.nonzero(valid_mask, as_tuple=True)
if inds[0].numel() > 0:
if labels.dim() == 3:
bin_labels[inds[0], labels[valid_mask], inds[1], inds[2]] = 1
else:
bin_labels[inds[0], labels[valid_mask]] = 1
valid_mask = valid_mask.unsqueeze(1).expand(target_shape).float()
if label_weights is None:
bin_label_weights = valid_mask
else:
bin_label_weights = label_weights.unsqueeze(1).expand(target_shape)
bin_label_weights = bin_label_weights * valid_mask
return bin_labels, bin_label_weights, valid_mask
def binary_cross_entropy(pred,
label,
weight=None,
reduction='mean',
avg_factor=None,
class_weight=None,
ignore_index=-100,
avg_non_ignore=False,
**kwargs):
"""Calculate the binary CrossEntropy loss.
Args:
pred (torch.Tensor): The prediction with shape (N, 1).
label (torch.Tensor): The learning label of the prediction.
Note: In bce loss, label < 0 is invalid.
weight (torch.Tensor, optional): Sample-wise loss weight.
reduction (str, optional): The method used to reduce the loss.
Options are "none", "mean" and "sum".
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
class_weight (list[float], optional): The weight for each class.
ignore_index (int): The label index to be ignored. Default: -100.
avg_non_ignore (bool): The flag decides to whether the loss is
only averaged over non-ignored targets. Default: False.
`New in version 0.23.0.`
Returns:
torch.Tensor: The calculated loss
"""
if pred.size(1) == 1:
# For binary class segmentation, the shape of pred is
# [N, 1, H, W] and that of label is [N, H, W].
assert label.max() <= 1, \
'For pred with shape [N, 1, H, W], its label must have at ' \
'most 2 classes'
pred = pred.squeeze()
if pred.dim() != label.dim():
assert (pred.dim() == 2 and label.dim() == 1) or (
pred.dim() == 4 and label.dim() == 3), \
'Only pred shape [N, C], label shape [N] or pred shape [N, C, ' \
'H, W], label shape [N, H, W] are supported'
# `weight` returned from `_expand_onehot_labels`
# has been treated for valid (non-ignore) pixels
label, weight, valid_mask = _expand_onehot_labels(
label, weight, pred.shape, ignore_index)
else:
# should mask out the ignored elements
valid_mask = ((label >= 0) & (label != ignore_index)).float()
if weight is not None:
weight = weight * valid_mask
else:
weight = valid_mask
# average loss over non-ignored and valid elements
if reduction == 'mean' and avg_factor is None and avg_non_ignore:
avg_factor = valid_mask.sum().item()
loss = F.binary_cross_entropy_with_logits(
pred, label.float(), pos_weight=class_weight, reduction='none')
# do the reduction for the weighted loss
loss = weight_reduce_loss(
loss, weight, reduction=reduction, avg_factor=avg_factor)
return loss
def mask_cross_entropy(pred,
target,
label,
reduction='mean',
avg_factor=None,
class_weight=None,
ignore_index=None,
**kwargs):
"""Calculate the CrossEntropy loss for masks.
Args:
pred (torch.Tensor): The prediction with shape (N, C), C is the number
of classes.
target (torch.Tensor): The learning label of the prediction.
label (torch.Tensor): ``label`` indicates the class label of the mask'
corresponding object. This will be used to select the mask in the
of the class which the object belongs to when the mask prediction
if not class-agnostic.
reduction (str, optional): The method used to reduce the loss.
Options are "none", "mean" and "sum".
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
class_weight (list[float], optional): The weight for each class.
ignore_index (None): Placeholder, to be consistent with other loss.
Default: None.
Returns:
torch.Tensor: The calculated loss
"""
assert ignore_index is None, 'BCE loss does not support ignore_index'
# TODO: handle these two reserved arguments
assert reduction == 'mean' and avg_factor is None
num_rois = pred.size()[0]
inds = torch.arange(0, num_rois, dtype=torch.long, device=pred.device)
pred_slice = pred[inds, label].squeeze(1)
return F.binary_cross_entropy_with_logits(
pred_slice, target, weight=class_weight, reduction='mean')[None]
@LOSSES.register_module(force=True)
class CrossEntropyLoss(nn.Module):
"""CrossEntropyLoss.
Args:
use_sigmoid (bool, optional): Whether the prediction uses sigmoid
of softmax. Defaults to False.
use_mask (bool, optional): Whether to use mask cross entropy loss.
Defaults to False.
reduction (str, optional): . Defaults to 'mean'.
Options are "none", "mean" and "sum".
class_weight (list[float] | str, optional): Weight of each class. If in
str format, read them from a file. Defaults to None.
loss_weight (float, optional): Weight of the loss. Defaults to 1.0.
loss_name (str, optional): Name of the loss item. If you want this loss
item to be included into the backward graph, `loss_` must be the
prefix of the name. Defaults to 'loss_ce'.
avg_non_ignore (bool): The flag decides to whether the loss is
only averaged over non-ignored targets. Default: False.
`New in version 0.23.0.`
"""
def __init__(self,
use_sigmoid=False,
use_mask=False,
reduction='mean',
class_weight=None,
loss_weight=1.0,
loss_name='loss_ce',
avg_non_ignore=False):
super(CrossEntropyLoss, self).__init__()
assert (use_sigmoid is False) or (use_mask is False)
self.use_sigmoid = use_sigmoid
self.use_mask = use_mask
self.reduction = reduction
self.loss_weight = loss_weight
self.class_weight = get_class_weight(class_weight)
self.avg_non_ignore = avg_non_ignore
if not self.avg_non_ignore and self.reduction == 'mean':
warnings.warn(
'Default ``avg_non_ignore`` is False, if you would like to '
'ignore the certain label and average loss over non-ignore '
'labels, which is the same with PyTorch official '
'cross_entropy, set ``avg_non_ignore=True``.')
if self.use_sigmoid:
self.cls_criterion = binary_cross_entropy
elif self.use_mask:
self.cls_criterion = mask_cross_entropy
else:
self.cls_criterion = cross_entropy
self._loss_name = loss_name
def extra_repr(self):
"""Extra repr."""
s = f'avg_non_ignore={self.avg_non_ignore}'
return s
def forward(self,
cls_score,
label,
weight=None,
avg_factor=None,
reduction_override=None,
ignore_index=-100,
**kwargs):
"""Forward function."""
assert reduction_override in (None, 'none', 'mean', 'sum')
reduction = (reduction_override
if reduction_override else self.reduction)
if self.class_weight is not None:
class_weight = cls_score.new_tensor(self.class_weight)
else:
class_weight = None
# Note: for BCE loss, label < 0 is invalid.
loss_cls = self.loss_weight * self.cls_criterion(
cls_score,
label,
weight,
class_weight=class_weight,
reduction=reduction,
avg_factor=avg_factor,
avg_non_ignore=self.avg_non_ignore,
ignore_index=ignore_index,
**kwargs)
return loss_cls
@property
def loss_name(self):
"""Loss Name.
This function must be implemented and will return the name of this
loss function. This name will be used to combine different loss items
by simple sum operation. In addition, if you want this loss item to be
included into the backward graph, `loss_` must be the prefix of the
name.
Returns:
str: The name of this loss item.
"""
return self._loss_name

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
import torch.nn as nn
from mmseg.models.builder import LOSSES
from mmseg.models.losses.utils import weight_reduce_loss
def dice_loss(pred,
target,
weight=None,
eps=1e-3,
reduction='mean',
avg_factor=None):
"""Calculate dice loss, which is proposed in
`V-Net: Fully Convolutional Neural Networks for Volumetric
Medical Image Segmentation <https://arxiv.org/abs/1606.04797>`_.
Args:
pred (torch.Tensor): The prediction, has a shape (n, *)
target (torch.Tensor): The learning label of the prediction,
shape (n, *), same shape of pred.
weight (torch.Tensor, optional): The weight of loss for each
prediction, has a shape (n,). Defaults to None.
eps (float): Avoid dividing by zero. Default: 1e-3.
reduction (str, optional): The method used to reduce the loss into
a scalar. Defaults to 'mean'.
Options are "none", "mean" and "sum".
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
"""
input = pred.flatten(1)
target = target.flatten(1).float()
a = torch.sum(input * target, 1)
b = torch.sum(input * input, 1) + eps
c = torch.sum(target * target, 1) + eps
d = (2 * a) / (b + c)
loss = 1 - d
if weight is not None:
assert weight.ndim == loss.ndim
assert len(weight) == len(pred)
loss = weight_reduce_loss(loss, weight, reduction, avg_factor)
return loss
def naive_dice_loss(pred,
target,
weight=None,
eps=1e-3,
reduction='mean',
avg_factor=None):
"""Calculate naive dice loss, the coefficient in the denominator is the
first power instead of the second power.
Args:
pred (torch.Tensor): The prediction, has a shape (n, *)
target (torch.Tensor): The learning label of the prediction,
shape (n, *), same shape of pred.
weight (torch.Tensor, optional): The weight of loss for each
prediction, has a shape (n,). Defaults to None.
eps (float): Avoid dividing by zero. Default: 1e-3.
reduction (str, optional): The method used to reduce the loss into
a scalar. Defaults to 'mean'.
Options are "none", "mean" and "sum".
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
"""
input = pred.flatten(1)
target = target.flatten(1).float()
a = torch.sum(input * target, 1)
b = torch.sum(input, 1)
c = torch.sum(target, 1)
d = (2 * a + eps) / (b + c + eps)
loss = 1 - d
if weight is not None:
assert weight.ndim == loss.ndim
assert len(weight) == len(pred)
loss = weight_reduce_loss(loss, weight, reduction, avg_factor)
return loss
@LOSSES.register_module(force=True)
class DiceLoss(nn.Module):
def __init__(self,
use_sigmoid=True,
activate=True,
reduction='mean',
naive_dice=False,
loss_weight=1.0,
eps=1e-3):
"""Dice Loss, there are two forms of dice loss is supported:
- the one proposed in `V-Net: Fully Convolutional Neural
Networks for Volumetric Medical Image Segmentation
<https://arxiv.org/abs/1606.04797>`_.
- the dice loss in which the power of the number in the
denominator is the first power instead of the second
power.
Args:
use_sigmoid (bool, optional): Whether to the prediction is
used for sigmoid or softmax. Defaults to True.
activate (bool): Whether to activate the predictions inside,
this will disable the inside sigmoid operation.
Defaults to True.
reduction (str, optional): The method used
to reduce the loss. Options are "none",
"mean" and "sum". Defaults to 'mean'.
naive_dice (bool, optional): If false, use the dice
loss defined in the V-Net paper, otherwise, use the
naive dice loss in which the power of the number in the
denominator is the first power instead of the second
power.Defaults to False.
loss_weight (float, optional): Weight of loss. Defaults to 1.0.
eps (float): Avoid dividing by zero. Defaults to 1e-3.
"""
super(DiceLoss, self).__init__()
self.use_sigmoid = use_sigmoid
self.reduction = reduction
self.naive_dice = naive_dice
self.loss_weight = loss_weight
self.eps = eps
self.activate = activate
def forward(self,
pred,
target,
weight=None,
reduction_override=None,
avg_factor=None):
"""Forward function.
Args:
pred (torch.Tensor): The prediction, has a shape (n, *).
target (torch.Tensor): The label of the prediction,
shape (n, *), same shape of pred.
weight (torch.Tensor, optional): The weight of loss for each
prediction, has a shape (n,). Defaults to None.
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
reduction_override (str, optional): The reduction method used to
override the original reduction method of the loss.
Options are "none", "mean" and "sum".
Returns:
torch.Tensor: The calculated loss
"""
assert reduction_override in (None, 'none', 'mean', 'sum')
reduction = (reduction_override
if reduction_override else self.reduction)
if self.activate:
if self.use_sigmoid:
pred = pred.sigmoid()
else:
raise NotImplementedError
if self.naive_dice:
loss = self.loss_weight * naive_dice_loss(
pred,
target,
weight,
eps=self.eps,
reduction=reduction,
avg_factor=avg_factor)
else:
loss = self.loss_weight * dice_loss(
pred,
target,
weight,
eps=self.eps,
reduction=reduction,
avg_factor=avg_factor)
return loss

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
import torch.nn as nn
import torch.nn.functional as F
from mmcv.ops import sigmoid_focal_loss as _sigmoid_focal_loss
from mmseg.models.builder import LOSSES
from mmseg.models.losses.utils import weight_reduce_loss
# This method is only for debugging
def py_sigmoid_focal_loss(pred,
target,
weight=None,
gamma=2.0,
alpha=0.25,
reduction='mean',
avg_factor=None):
"""PyTorch version of `Focal Loss <https://arxiv.org/abs/1708.02002>`_.
Args:
pred (torch.Tensor): The prediction with shape (N, C), C is the
number of classes
target (torch.Tensor): The learning label of the prediction.
weight (torch.Tensor, optional): Sample-wise loss weight.
gamma (float, optional): The gamma for calculating the modulating
factor. Defaults to 2.0.
alpha (float, optional): A balanced form for Focal Loss.
Defaults to 0.25.
reduction (str, optional): The method used to reduce the loss into
a scalar. Defaults to 'mean'.
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
"""
pred_sigmoid = pred.sigmoid()
target = target.type_as(pred)
pt = (1 - pred_sigmoid) * target + pred_sigmoid * (1 - target)
focal_weight = (alpha * target + (1 - alpha) *
(1 - target)) * pt.pow(gamma)
loss = F.binary_cross_entropy_with_logits(
pred, target, reduction='none') * focal_weight
if weight is not None:
if weight.shape != loss.shape:
if weight.size(0) == loss.size(0):
# For most cases, weight is of shape (num_priors, ),
# which means it does not have the second axis num_class
weight = weight.view(-1, 1)
else:
# Sometimes, weight per anchor per class is also needed. e.g.
# in FSAF. But it may be flattened of shape
# (num_priors x num_class, ), while loss is still of shape
# (num_priors, num_class).
assert weight.numel() == loss.numel()
weight = weight.view(loss.size(0), -1)
assert weight.ndim == loss.ndim
loss = weight_reduce_loss(loss, weight, reduction, avg_factor)
return loss
def sigmoid_focal_loss(pred,
target,
weight=None,
gamma=2.0,
alpha=0.25,
reduction='mean',
avg_factor=None):
r"""A warpper of cuda version `Focal Loss
<https://arxiv.org/abs/1708.02002>`_.
Args:
pred (torch.Tensor): The prediction with shape (N, C), C is the number
of classes.
target (torch.Tensor): The learning label of the prediction.
weight (torch.Tensor, optional): Sample-wise loss weight.
gamma (float, optional): The gamma for calculating the modulating
factor. Defaults to 2.0.
alpha (float, optional): A balanced form for Focal Loss.
Defaults to 0.25.
reduction (str, optional): The method used to reduce the loss into
a scalar. Defaults to 'mean'. Options are "none", "mean" and "sum".
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
"""
# Function.apply does not accept keyword arguments, so the decorator
# "weighted_loss" is not applicable
loss = _sigmoid_focal_loss(pred.contiguous(), target.contiguous(), gamma,
alpha, None, 'none')
if weight is not None:
if weight.shape != loss.shape:
if weight.size(0) == loss.size(0):
# For most cases, weight is of shape (num_priors, ),
# which means it does not have the second axis num_class
weight = weight.view(-1, 1)
else:
# Sometimes, weight per anchor per class is also needed. e.g.
# in FSAF. But it may be flattened of shape
# (num_priors x num_class, ), while loss is still of shape
# (num_priors, num_class).
assert weight.numel() == loss.numel()
weight = weight.view(loss.size(0), -1)
assert weight.ndim == loss.ndim
loss = weight_reduce_loss(loss, weight, reduction, avg_factor)
return loss
@LOSSES.register_module(force=True)
class FocalLoss(nn.Module):
def __init__(self,
use_sigmoid=True,
gamma=2.0,
alpha=0.25,
reduction='mean',
loss_weight=1.0):
"""`Focal Loss <https://arxiv.org/abs/1708.02002>`_
Args:
use_sigmoid (bool, optional): Whether to the prediction is
used for sigmoid or softmax. Defaults to True.
gamma (float, optional): The gamma for calculating the modulating
factor. Defaults to 2.0.
alpha (float, optional): A balanced form for Focal Loss.
Defaults to 0.25.
reduction (str, optional): The method used to reduce the loss into
a scalar. Defaults to 'mean'. Options are "none", "mean" and
"sum".
loss_weight (float, optional): Weight of loss. Defaults to 1.0.
"""
super(FocalLoss, self).__init__()
assert use_sigmoid is True, 'Only sigmoid focal loss supported now.'
self.use_sigmoid = use_sigmoid
self.gamma = gamma
self.alpha = alpha
self.reduction = reduction
self.loss_weight = loss_weight
def forward(self,
pred,
target,
weight=None,
avg_factor=None,
reduction_override=None):
"""Forward function.
Args:
pred (torch.Tensor): The prediction.
target (torch.Tensor): The learning label of the prediction.
weight (torch.Tensor, optional): The weight of loss for each
prediction. Defaults to None.
avg_factor (int, optional): Average factor that is used to average
the loss. Defaults to None.
reduction_override (str, optional): The reduction method used to
override the original reduction method of the loss.
Options are "none", "mean" and "sum".
Returns:
torch.Tensor: The calculated loss
"""
assert reduction_override in (None, 'none', 'mean', 'sum')
reduction = (
reduction_override if reduction_override else self.reduction)
if self.use_sigmoid:
if torch.cuda.is_available() and pred.is_cuda:
calculate_loss_func = sigmoid_focal_loss
else:
num_classes = pred.size(1)
target = F.one_hot(target, num_classes=num_classes + 1)
target = target[:, :num_classes]
calculate_loss_func = py_sigmoid_focal_loss
loss_cls = self.loss_weight * calculate_loss_func(
pred,
target,
weight,
gamma=self.gamma,
alpha=self.alpha,
reduction=reduction,
avg_factor=avg_factor)
else:
raise NotImplementedError
return loss_cls

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
import torch.nn as nn
import torch.nn.functional as F
from ..builder import MATCH_COST
@MATCH_COST.register_module()
class FocalLossCost:
"""FocalLossCost.
Args:
weight (int | float, optional): loss_weight
alpha (int | float, optional): focal_loss alpha
gamma (int | float, optional): focal_loss gamma
eps (float, optional): default 1e-12
Examples:
>>> from mmdet.core.bbox.match_costs.match_cost import FocalLossCost
>>> import torch
>>> self = FocalLossCost()
>>> cls_pred = torch.rand(4, 3)
>>> gt_labels = torch.tensor([0, 1, 2])
>>> factor = torch.tensor([10, 8, 10, 8])
>>> self(cls_pred, gt_labels)
tensor([[-0.3236, -0.3364, -0.2699],
[-0.3439, -0.3209, -0.4807],
[-0.4099, -0.3795, -0.2929],
[-0.1950, -0.1207, -0.2626]])
"""
def __init__(self, weight=1., alpha=0.25, gamma=2, eps=1e-12):
self.weight = weight
self.alpha = alpha
self.gamma = gamma
self.eps = eps
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classification logits, shape
[num_query, num_class].
gt_labels (Tensor): Label of `gt_bboxes`, shape (num_gt,).
Returns:
torch.Tensor: cls_cost value with weight
"""
cls_pred = cls_pred.sigmoid()
neg_cost = -(1 - cls_pred + self.eps).log() * (
1 - self.alpha) * cls_pred.pow(self.gamma)
pos_cost = -(cls_pred + self.eps).log() * self.alpha * (
1 - cls_pred).pow(self.gamma)
cls_cost = pos_cost[:, gt_labels] - neg_cost[:, gt_labels]
return cls_cost * self.weight
@MATCH_COST.register_module()
class MaskFocalLossCost(FocalLossCost):
"""Cost of mask assignments based on focal losses.
Args:
weight (int | float, optional): loss_weight.
alpha (int | float, optional): focal_loss alpha.
gamma (int | float, optional): focal_loss gamma.
eps (float, optional): default 1e-12.
"""
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classfication logits
in shape (N1, H, W), dtype=torch.float32.
gt_labels (Tensor): Ground truth in shape (N2, H, W),
dtype=torch.long.
Returns:
Tensor: classification cost matrix in shape (N1, N2).
"""
cls_pred = cls_pred.reshape((cls_pred.shape[0], -1))
gt_labels = gt_labels.reshape((gt_labels.shape[0], -1)).float()
hw = cls_pred.shape[1]
cls_pred = cls_pred.sigmoid()
neg_cost = -(1 - cls_pred + self.eps).log() * (
1 - self.alpha) * cls_pred.pow(self.gamma)
pos_cost = -(cls_pred + self.eps).log() * self.alpha * (
1 - cls_pred).pow(self.gamma)
cls_cost = torch.einsum('nc,mc->nm', pos_cost, gt_labels) + \
torch.einsum('nc,mc->nm', neg_cost, (1 - gt_labels))
return cls_cost / hw * self.weight
@MATCH_COST.register_module()
class ClassificationCost:
"""ClsSoftmaxCost.Borrow from
mmdet.core.bbox.match_costs.match_cost.ClassificationCost.
Args:
weight (int | float, optional): loss_weight
Examples:
>>> import torch
>>> self = ClassificationCost()
>>> cls_pred = torch.rand(4, 3)
>>> gt_labels = torch.tensor([0, 1, 2])
>>> factor = torch.tensor([10, 8, 10, 8])
>>> self(cls_pred, gt_labels)
tensor([[-0.3430, -0.3525, -0.3045],
[-0.3077, -0.2931, -0.3992],
[-0.3664, -0.3455, -0.2881],
[-0.3343, -0.2701, -0.3956]])
"""
def __init__(self, weight=1.):
self.weight = weight
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classification logits, shape
[num_query, num_class].
gt_labels (Tensor): Label of `gt_bboxes`, shape (num_gt,).
Returns:
torch.Tensor: cls_cost value with weight
"""
# Following the official DETR repo, contrary to the loss that
# NLL is used, we approximate it in 1 - cls_score[gt_label].
# The 1 is a constant that doesn't change the matching,
# so it can be omitted.
cls_score = cls_pred.softmax(-1)
cls_cost = -cls_score[:, gt_labels]
return cls_cost * self.weight
@MATCH_COST.register_module()
class DiceCost:
"""Cost of mask assignments based on dice losses.
Args:
weight (int | float, optional): loss_weight. Defaults to 1.
pred_act (bool, optional): Whether to apply sigmoid to mask_pred.
Defaults to False.
eps (float, optional): default 1e-12.
"""
def __init__(self, weight=1., pred_act=False, eps=1e-3):
self.weight = weight
self.pred_act = pred_act
self.eps = eps
def binary_mask_dice_loss(self, mask_preds, gt_masks):
"""
Args:
mask_preds (Tensor): Mask prediction in shape (N1, H, W).
gt_masks (Tensor): Ground truth in shape (N2, H, W)
store 0 or 1, 0 for negative class and 1 for
positive class.
Returns:
Tensor: Dice cost matrix in shape (N1, N2).
"""
mask_preds = mask_preds.reshape((mask_preds.shape[0], -1))
gt_masks = gt_masks.reshape((gt_masks.shape[0], -1)).float()
numerator = 2 * torch.einsum('nc,mc->nm', mask_preds, gt_masks)
denominator = mask_preds.sum(-1)[:, None] + gt_masks.sum(-1)[None, :]
loss = 1 - (numerator + self.eps) / (denominator + self.eps)
return loss
def __call__(self, mask_preds, gt_masks):
"""
Args:
mask_preds (Tensor): Mask prediction logits in shape (N1, H, W).
gt_masks (Tensor): Ground truth in shape (N2, H, W).
Returns:
Tensor: Dice cost matrix in shape (N1, N2).
"""
if self.pred_act:
mask_preds = mask_preds.sigmoid()
dice_cost = self.binary_mask_dice_loss(mask_preds, gt_masks)
return dice_cost * self.weight
@MATCH_COST.register_module()
class CrossEntropyLossCost:
"""CrossEntropyLossCost.
Args:
weight (int | float, optional): loss weight. Defaults to 1.
use_sigmoid (bool, optional): Whether the prediction uses sigmoid
of softmax. Defaults to True.
"""
def __init__(self, weight=1., use_sigmoid=True):
assert use_sigmoid, 'use_sigmoid = False is not supported yet.'
self.weight = weight
self.use_sigmoid = use_sigmoid
def _binary_cross_entropy(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): The prediction with shape (num_query, 1, *) or
(num_query, *).
gt_labels (Tensor): The learning label of prediction with
shape (num_gt, *).
Returns:
Tensor: Cross entropy cost matrix in shape (num_query, num_gt).
"""
cls_pred = cls_pred.flatten(1).float()
gt_labels = gt_labels.flatten(1).float()
n = cls_pred.shape[1]
pos = F.binary_cross_entropy_with_logits(
cls_pred, torch.ones_like(cls_pred), reduction='none')
neg = F.binary_cross_entropy_with_logits(
cls_pred, torch.zeros_like(cls_pred), reduction='none')
cls_cost = torch.einsum('nc,mc->nm', pos, gt_labels) + \
torch.einsum('nc,mc->nm', neg, 1 - gt_labels)
cls_cost = cls_cost / n
return cls_cost
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classification logits.
gt_labels (Tensor): Labels.
Returns:
Tensor: Cross entropy cost matrix with weight in
shape (num_query, num_gt).
"""
if self.use_sigmoid:
cls_cost = self._binary_cross_entropy(cls_pred, gt_labels)
else:
raise NotImplementedError
return cls_cost * self.weight

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
import torch.nn as nn
import torch.nn.functional as F
from ..builder import MATCH_COST
@MATCH_COST.register_module()
class FocalLossCost:
"""FocalLossCost.
Args:
weight (int | float, optional): loss_weight
alpha (int | float, optional): focal_loss alpha
gamma (int | float, optional): focal_loss gamma
eps (float, optional): default 1e-12
Examples:
>>> from mmdet.core.bbox.match_costs.match_cost import FocalLossCost
>>> import torch
>>> self = FocalLossCost()
>>> cls_pred = torch.rand(4, 3)
>>> gt_labels = torch.tensor([0, 1, 2])
>>> factor = torch.tensor([10, 8, 10, 8])
>>> self(cls_pred, gt_labels)
tensor([[-0.3236, -0.3364, -0.2699],
[-0.3439, -0.3209, -0.4807],
[-0.4099, -0.3795, -0.2929],
[-0.1950, -0.1207, -0.2626]])
"""
def __init__(self, weight=1., alpha=0.25, gamma=2, eps=1e-12):
self.weight = weight
self.alpha = alpha
self.gamma = gamma
self.eps = eps
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classification logits, shape
[num_query, num_class].
gt_labels (Tensor): Label of `gt_bboxes`, shape (num_gt,).
Returns:
torch.Tensor: cls_cost value with weight
"""
cls_pred = cls_pred.sigmoid()
neg_cost = -(1 - cls_pred + self.eps).log() * (
1 - self.alpha) * cls_pred.pow(self.gamma)
pos_cost = -(cls_pred + self.eps).log() * self.alpha * (
1 - cls_pred).pow(self.gamma)
cls_cost = pos_cost[:, gt_labels] - neg_cost[:, gt_labels]
return cls_cost * self.weight
@MATCH_COST.register_module()
class MaskFocalLossCost(FocalLossCost):
"""Cost of mask assignments based on focal losses.
Args:
weight (int | float, optional): loss_weight.
alpha (int | float, optional): focal_loss alpha.
gamma (int | float, optional): focal_loss gamma.
eps (float, optional): default 1e-12.
"""
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classfication logits
in shape (N1, H, W), dtype=torch.float32.
gt_labels (Tensor): Ground truth in shape (N2, H, W),
dtype=torch.long.
Returns:
Tensor: classification cost matrix in shape (N1, N2).
"""
cls_pred = cls_pred.reshape((cls_pred.shape[0], -1))
gt_labels = gt_labels.reshape((gt_labels.shape[0], -1)).float()
hw = cls_pred.shape[1]
cls_pred = cls_pred.sigmoid()
neg_cost = -(1 - cls_pred + self.eps).log() * (
1 - self.alpha) * cls_pred.pow(self.gamma)
pos_cost = -(cls_pred + self.eps).log() * self.alpha * (
1 - cls_pred).pow(self.gamma)
cls_cost = torch.einsum('nc,mc->nm', pos_cost, gt_labels) + \
torch.einsum('nc,mc->nm', neg_cost, (1 - gt_labels))
return cls_cost / hw * self.weight
@MATCH_COST.register_module()
class ClassificationCost:
"""ClsSoftmaxCost.Borrow from
mmdet.core.bbox.match_costs.match_cost.ClassificationCost.
Args:
weight (int | float, optional): loss_weight
Examples:
>>> import torch
>>> self = ClassificationCost()
>>> cls_pred = torch.rand(4, 3)
>>> gt_labels = torch.tensor([0, 1, 2])
>>> factor = torch.tensor([10, 8, 10, 8])
>>> self(cls_pred, gt_labels)
tensor([[-0.3430, -0.3525, -0.3045],
[-0.3077, -0.2931, -0.3992],
[-0.3664, -0.3455, -0.2881],
[-0.3343, -0.2701, -0.3956]])
"""
def __init__(self, weight=1.):
self.weight = weight
def __call__(self, cls_pred, gt_labels):
"""
Args:
cls_pred (Tensor): Predicted classification logits, shape
[num_query, num_class].
gt_labels (Tensor): Label of `gt_bboxes`, shape (num_gt,).
Returns:
torch.Tensor: cls_cost value with weight
"""
# Following the official DETR repo, contrary to the loss that
# NLL is used, we approximate it in 1 - cls_score[gt_label].
# The 1 is a constant that doesn't change the matching,
# so it can be omitted.
cls_score = cls_pred.softmax(-1)
cls_cost = -cls_score[:, gt_labels]
return cls_cost * self.weight
@MATCH_COST.register_module()
class DiceCost:
"""Cost of mask assignments based on dice losses.
Args:
weight (int | float, optional): loss_weight. Defaults to 1.
pred_act (bool, optional): Whether to apply sigmoid to mask_pred.
Defaults to False.
eps (float, optional): default 1e-12.
"""
def __init__(self, weight=1., pred_act=False, eps=1e-3):
self.weight = weight
self.pred_act = pred_act
self.eps = eps
def binary_mask_dice_loss(self, mask_preds, gt_masks):
"""
Args:
mask_preds (Tensor): Mask prediction in shape (N1, H, W).
gt_masks (Tensor): Ground truth in shape (N2, H, W)
store 0 or 1, 0 for negative class and 1 for
positive class.
Returns:
Tensor: Dice cost matrix in shape (N1, N2).
"""
mask_preds = mask_preds.reshape((mask_preds.shape[0], -1))
gt_masks = gt_masks.reshape((gt_masks.shape[0], -1)).float()
numerator = 2 * torch.einsum('nc,mc->nm', mask_preds, gt_masks)
denominator = mask_preds.sum(-1)[:, None] + gt_masks.sum(-1)[None, :]
loss = 1 - (numerator + self.eps) / (denominator + self.eps)
return loss
def __call__(self, mask_preds, gt_masks):
"""
Args:
mask_preds (Tensor): Mask prediction logits in shape (N1, H, W).
gt_masks (Tensor): Ground truth in shape (N2, H, W).
Returns:
Tensor: Dice cost matrix in shape (N1, N2).
"""
if self.pred_act:
mask_preds = mask_preds.sigmoid()
dice_cost = self.binary_mask_dice_loss(mask_preds, gt_masks)
return dice_cost * self.weight

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# Copyright (c) Shanghai AI Lab. All rights reserved.
from .msdeformattn_pixel_decoder import MSDeformAttnPixelDecoder
from .pixel_decoder import PixelDecoder, TransformerEncoderPixelDecoder
__all__ = [
'PixelDecoder', 'TransformerEncoderPixelDecoder',
'MSDeformAttnPixelDecoder'
]

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
import torch.nn as nn
import torch.nn.functional as F
from mmcv.cnn import (PLUGIN_LAYERS, Conv2d, ConvModule, caffe2_xavier_init,
normal_init, xavier_init)
from mmcv.cnn.bricks.transformer import (build_positional_encoding,
build_transformer_layer_sequence)
from mmcv.runner import BaseModule, ModuleList
from ...core.anchor import MlvlPointGenerator
from ..utils.transformer import MultiScaleDeformableAttention
@PLUGIN_LAYERS.register_module()
class MSDeformAttnPixelDecoder(BaseModule):
"""Pixel decoder with multi-scale deformable attention.
Args:
in_channels (list[int] | tuple[int]): Number of channels in the
input feature maps.
strides (list[int] | tuple[int]): Output strides of feature from
backbone.
feat_channels (int): Number of channels for feature.
out_channels (int): Number of channels for output.
num_outs (int): Number of output scales.
norm_cfg (:obj:`mmcv.ConfigDict` | dict): Config for normalization.
Defaults to dict(type='GN', num_groups=32).
act_cfg (:obj:`mmcv.ConfigDict` | dict): Config for activation.
Defaults to dict(type='ReLU').
encoder (:obj:`mmcv.ConfigDict` | dict): Config for transformer
encoder. Defaults to `DetrTransformerEncoder`.
positional_encoding (:obj:`mmcv.ConfigDict` | dict): Config for
transformer encoder position encoding. Defaults to
dict(type='SinePositionalEncoding', num_feats=128,
normalize=True).
init_cfg (:obj:`mmcv.ConfigDict` | dict): Initialization config dict.
"""
def __init__(self,
in_channels=[256, 512, 1024, 2048],
strides=[4, 8, 16, 32],
feat_channels=256,
out_channels=256,
num_outs=3,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict(
type='DetrTransformerEncoder',
num_layers=6,
transformerlayers=dict(
type='BaseTransformerLayer',
attn_cfgs=dict(
type='MultiScaleDeformableAttention',
embed_dims=256,
num_heads=8,
num_levels=3,
num_points=4,
im2col_step=64,
dropout=0.0,
batch_first=False,
norm_cfg=None,
init_cfg=None),
feedforward_channels=1024,
ffn_dropout=0.0,
operation_order=('self_attn', 'norm', 'ffn', 'norm')),
init_cfg=None),
positional_encoding=dict(
type='SinePositionalEncoding',
num_feats=128,
normalize=True),
init_cfg=None):
super().__init__(init_cfg=init_cfg)
self.strides = strides
self.num_input_levels = len(in_channels)
self.num_encoder_levels = \
encoder.transformerlayers.attn_cfgs.num_levels
assert self.num_encoder_levels >= 1, \
'num_levels in attn_cfgs must be at least one'
input_conv_list = []
# from top to down (low to high resolution)
for i in range(self.num_input_levels - 1,
self.num_input_levels - self.num_encoder_levels - 1,
-1):
input_conv = ConvModule(
in_channels[i],
feat_channels,
kernel_size=1,
norm_cfg=norm_cfg,
act_cfg=None,
bias=True)
input_conv_list.append(input_conv)
self.input_convs = ModuleList(input_conv_list)
self.encoder = build_transformer_layer_sequence(encoder)
self.postional_encoding = build_positional_encoding(
positional_encoding)
# high resolution to low resolution
self.level_encoding = nn.Embedding(self.num_encoder_levels,
feat_channels)
# fpn-like structure
self.lateral_convs = ModuleList()
self.output_convs = ModuleList()
self.use_bias = norm_cfg is None
# from top to down (low to high resolution)
# fpn for the rest features that didn't pass in encoder
for i in range(self.num_input_levels - self.num_encoder_levels - 1, -1,
-1):
lateral_conv = ConvModule(
in_channels[i],
feat_channels,
kernel_size=1,
bias=self.use_bias,
norm_cfg=norm_cfg,
act_cfg=None)
output_conv = ConvModule(
feat_channels,
feat_channels,
kernel_size=3,
stride=1,
padding=1,
bias=self.use_bias,
norm_cfg=norm_cfg,
act_cfg=act_cfg)
self.lateral_convs.append(lateral_conv)
self.output_convs.append(output_conv)
self.mask_feature = Conv2d(
feat_channels, out_channels, kernel_size=1, stride=1, padding=0)
self.num_outs = num_outs
self.point_generator = MlvlPointGenerator(strides)
def init_weights(self):
"""Initialize weights."""
for i in range(0, self.num_encoder_levels):
xavier_init(
self.input_convs[i].conv,
gain=1,
bias=0,
distribution='uniform')
for i in range(0, self.num_input_levels - self.num_encoder_levels):
caffe2_xavier_init(self.lateral_convs[i].conv, bias=0)
caffe2_xavier_init(self.output_convs[i].conv, bias=0)
caffe2_xavier_init(self.mask_feature, bias=0)
normal_init(self.level_encoding, mean=0, std=1)
for p in self.encoder.parameters():
if p.dim() > 1:
nn.init.xavier_normal_(p)
# init_weights defined in MultiScaleDeformableAttention
for layer in self.encoder.layers:
for attn in layer.attentions:
if isinstance(attn, MultiScaleDeformableAttention):
attn.init_weights()
def forward(self, feats):
"""
Args:
feats (list[Tensor]): Feature maps of each level. Each has
shape of (batch_size, c, h, w).
Returns:
tuple: A tuple containing the following:
- mask_feature (Tensor): shape (batch_size, c, h, w).
- multi_scale_features (list[Tensor]): Multi scale \
features, each in shape (batch_size, c, h, w).
"""
# generate padding mask for each level, for each image
batch_size = feats[0].shape[0]
encoder_input_list = []
padding_mask_list = []
level_positional_encoding_list = []
spatial_shapes = []
reference_points_list = []
for i in range(self.num_encoder_levels):
level_idx = self.num_input_levels - i - 1
feat = feats[level_idx]
feat_projected = self.input_convs[i](feat)
h, w = feat.shape[-2:]
# no padding
padding_mask_resized = feat.new_zeros(
(batch_size, ) + feat.shape[-2:], dtype=torch.bool)
pos_embed = self.postional_encoding(padding_mask_resized)
level_embed = self.level_encoding.weight[i]
level_pos_embed = level_embed.view(1, -1, 1, 1) + pos_embed
# (h_i * w_i, 2)
reference_points = self.point_generator.single_level_grid_priors(
feat.shape[-2:], level_idx, device=feat.device)
# normalize
factor = feat.new_tensor([[w, h]]) * self.strides[level_idx]
reference_points = reference_points / factor
# shape (batch_size, c, h_i, w_i) -> (h_i * w_i, batch_size, c)
feat_projected = feat_projected.flatten(2).permute(2, 0, 1)
level_pos_embed = level_pos_embed.flatten(2).permute(2, 0, 1)
padding_mask_resized = padding_mask_resized.flatten(1)
encoder_input_list.append(feat_projected)
padding_mask_list.append(padding_mask_resized)
level_positional_encoding_list.append(level_pos_embed)
spatial_shapes.append(feat.shape[-2:])
reference_points_list.append(reference_points)
# shape (batch_size, total_num_query),
# total_num_query=sum([., h_i * w_i,.])
padding_masks = torch.cat(padding_mask_list, dim=1)
# shape (total_num_query, batch_size, c)
encoder_inputs = torch.cat(encoder_input_list, dim=0)
level_positional_encodings = torch.cat(
level_positional_encoding_list, dim=0)
device = encoder_inputs.device
# shape (num_encoder_levels, 2), from low
# resolution to high resolution
spatial_shapes = torch.as_tensor(
spatial_shapes, dtype=torch.long, device=device)
# shape (0, h_0*w_0, h_0*w_0+h_1*w_1, ...)
level_start_index = torch.cat((spatial_shapes.new_zeros(
(1, )), spatial_shapes.prod(1).cumsum(0)[:-1]))
reference_points = torch.cat(reference_points_list, dim=0)
reference_points = reference_points[None, :, None].repeat(
batch_size, 1, self.num_encoder_levels, 1)
valid_radios = reference_points.new_ones(
(batch_size, self.num_encoder_levels, 2))
# shape (num_total_query, batch_size, c)
memory = self.encoder(
query=encoder_inputs,
key=None,
value=None,
query_pos=level_positional_encodings,
key_pos=None,
attn_masks=None,
key_padding_mask=None,
query_key_padding_mask=padding_masks,
spatial_shapes=spatial_shapes,
reference_points=reference_points,
level_start_index=level_start_index,
valid_radios=valid_radios)
# (num_total_query, batch_size, c) -> (batch_size, c, num_total_query)
memory = memory.permute(1, 2, 0)
# from low resolution to high resolution
num_query_per_level = [e[0] * e[1] for e in spatial_shapes]
outs = torch.split(memory, num_query_per_level, dim=-1)
outs = [
x.reshape(batch_size, -1, spatial_shapes[i][0],
spatial_shapes[i][1]) for i, x in enumerate(outs)
]
for i in range(self.num_input_levels - self.num_encoder_levels - 1, -1,
-1):
x = feats[i]
cur_feat = self.lateral_convs[i](x)
y = cur_feat + F.interpolate(
outs[-1],
size=cur_feat.shape[-2:],
mode='bilinear',
align_corners=False)
y = self.output_convs[i](y)
outs.append(y)
multi_scale_features = outs[:self.num_outs]
mask_feature = self.mask_feature(outs[-1])
return mask_feature, multi_scale_features

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import torch
import torch.nn.functional as F
from mmcv.cnn import PLUGIN_LAYERS, Conv2d, ConvModule, kaiming_init
from mmcv.cnn.bricks.transformer import (build_positional_encoding,
build_transformer_layer_sequence)
from mmcv.runner import BaseModule, ModuleList
@PLUGIN_LAYERS.register_module()
class PixelDecoder(BaseModule):
"""Pixel decoder with a structure like fpn.
Args:
in_channels (list[int] | tuple[int]): Number of channels in the
input feature maps.
feat_channels (int): Number channels for feature.
out_channels (int): Number channels for output.
norm_cfg (obj:`mmcv.ConfigDict`|dict): Config for normalization.
Defaults to dict(type='GN', num_groups=32).
act_cfg (obj:`mmcv.ConfigDict`|dict): Config for activation.
Defaults to dict(type='ReLU').
encoder (obj:`mmcv.ConfigDict`|dict): Config for transorformer
encoder.Defaults to None.
positional_encoding (obj:`mmcv.ConfigDict`|dict): Config for
transformer encoder position encoding. Defaults to
dict(type='SinePositionalEncoding', num_feats=128,
normalize=True).
init_cfg (obj:`mmcv.ConfigDict`|dict): Initialization config dict.
Default: None
"""
def __init__(self,
in_channels,
feat_channels,
out_channels,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
init_cfg=None):
super().__init__(init_cfg=init_cfg)
self.in_channels = in_channels
self.num_inputs = len(in_channels)
self.lateral_convs = ModuleList()
self.output_convs = ModuleList()
self.use_bias = norm_cfg is None
for i in range(0, self.num_inputs - 1):
l_conv = ConvModule(
in_channels[i],
feat_channels,
kernel_size=1,
bias=self.use_bias,
norm_cfg=norm_cfg,
act_cfg=None)
o_conv = ConvModule(
feat_channels,
feat_channels,
kernel_size=3,
stride=1,
padding=1,
bias=self.use_bias,
norm_cfg=norm_cfg,
act_cfg=act_cfg)
self.lateral_convs.append(l_conv)
self.output_convs.append(o_conv)
self.last_feat_conv = ConvModule(
in_channels[-1],
feat_channels,
kernel_size=3,
padding=1,
stride=1,
bias=self.use_bias,
norm_cfg=norm_cfg,
act_cfg=act_cfg)
self.mask_feature = Conv2d(
feat_channels, out_channels, kernel_size=3, stride=1, padding=1)
def init_weights(self):
"""Initialize weights."""
for i in range(0, self.num_inputs - 2):
kaiming_init(self.lateral_convs[i].conv, a=1)
kaiming_init(self.output_convs[i].conv, a=1)
kaiming_init(self.mask_feature, a=1)
kaiming_init(self.last_feat_conv, a=1)
def forward(self, feats, img_metas):
"""
Args:
feats (list[Tensor]): Feature maps of each level. Each has
shape of [bs, c, h, w].
img_metas (list[dict]): List of image information. Pass in
for creating more accurate padding mask. #! not used here.
Returns:
tuple: a tuple containing the following:
- mask_feature (Tensor): Shape [bs, c, h, w].
- memory (Tensor): Output of last stage of backbone.
Shape [bs, c, h, w].
"""
y = self.last_feat_conv(feats[-1])
for i in range(self.num_inputs - 2, -1, -1):
x = feats[i]
cur_fpn = self.lateral_convs[i](x)
y = cur_fpn + \
F.interpolate(y, size=cur_fpn.shape[-2:], mode='nearest')
y = self.output_convs[i](y)
mask_feature = self.mask_feature(y)
memory = feats[-1]
return mask_feature, memory
@PLUGIN_LAYERS.register_module()
class TransformerEncoderPixelDecoder(PixelDecoder):
"""Pixel decoder with transormer encoder inside.
Args:
in_channels (list[int] | tuple[int]): Number of channels in the
input feature maps.
feat_channels (int): Number channels for feature.
out_channels (int): Number channels for output.
norm_cfg (obj:`mmcv.ConfigDict`|dict): Config for normalization.
Defaults to dict(type='GN', num_groups=32).
act_cfg (obj:`mmcv.ConfigDict`|dict): Config for activation.
Defaults to dict(type='ReLU').
encoder (obj:`mmcv.ConfigDict`|dict): Config for transorformer
encoder.Defaults to None.
positional_encoding (obj:`mmcv.ConfigDict`|dict): Config for
transformer encoder position encoding. Defaults to
dict(type='SinePositionalEncoding', num_feats=128,
normalize=True).
init_cfg (obj:`mmcv.ConfigDict`|dict): Initialization config dict.
Default: None
"""
def __init__(self,
in_channels,
feat_channels,
out_channels,
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=None,
positional_encoding=dict(
type='SinePositionalEncoding',
num_feats=128,
normalize=True),
init_cfg=None):
super(TransformerEncoderPixelDecoder, self).__init__(
in_channels,
feat_channels,
out_channels,
norm_cfg,
act_cfg,
init_cfg=init_cfg)
self.last_feat_conv = None
self.encoder = build_transformer_layer_sequence(encoder)
self.encoder_embed_dims = self.encoder.embed_dims
assert self.encoder_embed_dims == feat_channels, 'embed_dims({}) of ' \
'tranformer encoder must equal to feat_channels({})'.format(
feat_channels, self.encoder_embed_dims)
self.positional_encoding = build_positional_encoding(
positional_encoding)
self.encoder_in_proj = Conv2d(
in_channels[-1], feat_channels, kernel_size=1)
self.encoder_out_proj = ConvModule(
feat_channels,
feat_channels,
kernel_size=3,
stride=1,
padding=1,
bias=self.use_bias,
norm_cfg=norm_cfg,
act_cfg=act_cfg)
def init_weights(self):
"""Initialize weights."""
for i in range(0, self.num_inputs - 2):
kaiming_init(self.lateral_convs[i].conv, a=1)
kaiming_init(self.output_convs[i].conv, a=1)
kaiming_init(self.mask_feature, a=1)
kaiming_init(self.encoder_in_proj, a=1)
kaiming_init(self.encoder_out_proj.conv, a=1)
def forward(self, feats, img_metas):
"""
Args:
feats (list[Tensor]): Feature maps of each level. Each has
shape of [bs, c, h, w].
img_metas (list[dict]): List of image information. Pass in
for creating more accurate padding mask.
Returns:
tuple: a tuple containing the following:
- mask_feature (Tensor): shape [bs, c, h, w].
- memory (Tensor): shape [bs, c, h, w].
"""
feat_last = feats[-1]
bs, c, h, w = feat_last.shape
input_img_h, input_img_w = img_metas[0]['pad_shape'][:-1]
# input_img_h, input_img_w = img_metas[0]['batch_input_shape']
padding_mask = feat_last.new_ones((bs, input_img_h, input_img_w),
dtype=torch.float32)
for i in range(bs):
img_h, img_w, _ = img_metas[i]['img_shape']
padding_mask[i, :img_h, :img_w] = 0
padding_mask = F.interpolate(
padding_mask.unsqueeze(1),
size=feat_last.shape[-2:],
mode='nearest').to(torch.bool).squeeze(1)
pos_embed = self.positional_encoding(padding_mask)
feat_last = self.encoder_in_proj(feat_last)
# [bs, c, h, w] -> [nq, bs, dim]
feat_last = feat_last.flatten(2).permute(2, 0, 1)
pos_embed = pos_embed.flatten(2).permute(2, 0, 1)
padding_mask = padding_mask.flatten(1) # [bs, h, w] -> [bs, h*w]
memory = self.encoder(
query=feat_last,
key=None,
value=None,
query_pos=pos_embed,
query_key_padding_mask=padding_mask)
# [nq, bs, em] -> [bs, c, h, w]
memory = memory.permute(1, 2, 0).view(bs, self.encoder_embed_dims, h,
w)
y = self.encoder_out_proj(memory)
for i in range(self.num_inputs - 2, -1, -1):
x = feats[i]
cur_fpn = self.lateral_convs[i](x)
y = cur_fpn + \
F.interpolate(y, size=cur_fpn.shape[-2:], mode='nearest')
y = self.output_convs[i](y)
mask_feature = self.mask_feature(y)
return mask_feature, memory

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# Copyright (c) OpenMMLab. All rights reserved.
from .encoder_decoder_mask2former import EncoderDecoderMask2Former
from .encoder_decoder_mask2former_aug import EncoderDecoderMask2FormerAug
__all__ = ['EncoderDecoderMask2Former', 'EncoderDecoderMask2FormerAug']

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# Copyright (c) OpenMMLab. All rights reserved.
import torch
import torch.nn as nn
import torch.nn.functional as F
from mmseg.core import add_prefix
from mmseg.models import builder
from mmseg.models.builder import SEGMENTORS
from mmseg.models.segmentors.base import BaseSegmentor
from mmseg.ops import resize
@SEGMENTORS.register_module()
class EncoderDecoderMask2Former(BaseSegmentor):
"""Encoder Decoder segmentors.
EncoderDecoder typically consists of backbone, decode_head, auxiliary_head.
Note that auxiliary_head is only used for deep supervision during training,
which could be dumped during inference.
"""
def __init__(self,
backbone,
decode_head,
neck=None,
auxiliary_head=None,
train_cfg=None,
test_cfg=None,
pretrained=None,
init_cfg=None):
super(EncoderDecoderMask2Former, self).__init__(init_cfg)
if pretrained is not None:
assert backbone.get('pretrained') is None, \
'both backbone and segmentor set pretrained weight'
backbone.pretrained = pretrained
self.backbone = builder.build_backbone(backbone)
if neck is not None:
self.neck = builder.build_neck(neck)
decode_head.update(train_cfg=train_cfg)
decode_head.update(test_cfg=test_cfg)
self._init_decode_head(decode_head)
self._init_auxiliary_head(auxiliary_head)
self.train_cfg = train_cfg
self.test_cfg = test_cfg
assert self.with_decode_head
def _init_decode_head(self, decode_head):
"""Initialize ``decode_head``"""
self.decode_head = builder.build_head(decode_head)
self.align_corners = self.decode_head.align_corners
self.num_classes = self.decode_head.num_classes
def _init_auxiliary_head(self, auxiliary_head):
"""Initialize ``auxiliary_head``"""
if auxiliary_head is not None:
if isinstance(auxiliary_head, list):
self.auxiliary_head = nn.ModuleList()
for head_cfg in auxiliary_head:
self.auxiliary_head.append(builder.build_head(head_cfg))
else:
self.auxiliary_head = builder.build_head(auxiliary_head)
def extract_feat(self, img):
"""Extract features from images."""
x = self.backbone(img)
if self.with_neck:
x = self.neck(x)
return x
def encode_decode(self, img, img_metas):
"""Encode images with backbone and decode into a semantic segmentation
map of the same size as input."""
x = self.extract_feat(img)
out = self._decode_head_forward_test(x, img_metas)
out = resize(
input=out,
size=img.shape[2:],
mode='bilinear',
align_corners=self.align_corners)
return out
def _decode_head_forward_train(self, x, img_metas, gt_semantic_seg,
**kwargs):
"""Run forward function and calculate loss for decode head in
training."""
losses = dict()
loss_decode = self.decode_head.forward_train(x, img_metas,
gt_semantic_seg, **kwargs)
losses.update(add_prefix(loss_decode, 'decode'))
return losses
def _decode_head_forward_test(self, x, img_metas):
"""Run forward function and calculate loss for decode head in
inference."""
seg_logits = self.decode_head.forward_test(x, img_metas, self.test_cfg)
return seg_logits
def _auxiliary_head_forward_train(self, x, img_metas, gt_semantic_seg):
"""Run forward function and calculate loss for auxiliary head in
training."""
losses = dict()
if isinstance(self.auxiliary_head, nn.ModuleList):
for idx, aux_head in enumerate(self.auxiliary_head):
loss_aux = aux_head.forward_train(x, img_metas,
gt_semantic_seg,
self.train_cfg)
losses.update(add_prefix(loss_aux, f'aux_{idx}'))
else:
loss_aux = self.auxiliary_head.forward_train(
x, img_metas, gt_semantic_seg, self.train_cfg)
losses.update(add_prefix(loss_aux, 'aux'))
return losses
def forward_dummy(self, img):
"""Dummy forward function."""
seg_logit = self.encode_decode(img, None)
return seg_logit
def forward_train(self, img, img_metas, gt_semantic_seg, **kwargs):
"""Forward function for training.
Args:
img (Tensor): Input images.
img_metas (list[dict]): List of image info dict where each dict
has: 'img_shape', 'scale_factor', 'flip', and may also contain
'filename', 'ori_shape', 'pad_shape', and 'img_norm_cfg'.
For details on the values of these keys see
`mmseg/datasets/pipelines/formatting.py:Collect`.
gt_semantic_seg (Tensor): Semantic segmentation masks
used if the architecture supports semantic segmentation task.
Returns:
dict[str, Tensor]: a dictionary of loss components
"""
x = self.extract_feat(img)
losses = dict()
loss_decode = self._decode_head_forward_train(x, img_metas,
gt_semantic_seg,
**kwargs)
losses.update(loss_decode)
if self.with_auxiliary_head:
loss_aux = self._auxiliary_head_forward_train(
x, img_metas, gt_semantic_seg)
losses.update(loss_aux)
return losses
# TODO refactor
def slide_inference(self, img, img_meta, rescale):
"""Inference by sliding-window with overlap.
If h_crop > h_img or w_crop > w_img, the small patch will be used to
decode without padding.
"""
h_stride, w_stride = self.test_cfg.stride
h_crop, w_crop = self.test_cfg.crop_size
batch_size, _, h_img, w_img = img.size()
num_classes = self.num_classes
h_grids = max(h_img - h_crop + h_stride - 1, 0) // h_stride + 1
w_grids = max(w_img - w_crop + w_stride - 1, 0) // w_stride + 1
preds = img.new_zeros((batch_size, num_classes, h_img, w_img))
count_mat = img.new_zeros((batch_size, 1, h_img, w_img))
for h_idx in range(h_grids):
for w_idx in range(w_grids):
y1 = h_idx * h_stride
x1 = w_idx * w_stride
y2 = min(y1 + h_crop, h_img)
x2 = min(x1 + w_crop, w_img)
y1 = max(y2 - h_crop, 0)
x1 = max(x2 - w_crop, 0)
crop_img = img[:, :, y1:y2, x1:x2]
crop_seg_logit = self.encode_decode(crop_img, img_meta)
preds += F.pad(crop_seg_logit,
(int(x1), int(preds.shape[3] - x2), int(y1),
int(preds.shape[2] - y2)))
count_mat[:, :, y1:y2, x1:x2] += 1
assert (count_mat == 0).sum() == 0
if torch.onnx.is_in_onnx_export():
# cast count_mat to constant while exporting to ONNX
count_mat = torch.from_numpy(
count_mat.cpu().detach().numpy()).to(device=img.device)
preds = preds / count_mat
if rescale:
preds = resize(
preds,
size=img_meta[0]['ori_shape'][:2],
mode='bilinear',
align_corners=self.align_corners,
warning=False)
return preds
def whole_inference(self, img, img_meta, rescale):
"""Inference with full image."""
seg_logit = self.encode_decode(img, img_meta)
if rescale:
# support dynamic shape for onnx
if torch.onnx.is_in_onnx_export():
size = img.shape[2:]
else:
size = img_meta[0]['ori_shape'][:2]
seg_logit = resize(
seg_logit,
size=size,
mode='bilinear',
align_corners=self.align_corners,
warning=False)
return seg_logit
def inference(self, img, img_meta, rescale):
"""Inference with slide/whole style.
Args:
img (Tensor): The input image of shape (N, 3, H, W).
img_meta (dict): Image info dict where each dict has: 'img_shape',
'scale_factor', 'flip', and may also contain
'filename', 'ori_shape', 'pad_shape', and 'img_norm_cfg'.
For details on the values of these keys see
`mmseg/datasets/pipelines/formatting.py:Collect`.
rescale (bool): Whether rescale back to original shape.
Returns:
Tensor: The output segmentation map.
"""
assert self.test_cfg.mode in ['slide', 'whole']
ori_shape = img_meta[0]['ori_shape']
assert all(_['ori_shape'] == ori_shape for _ in img_meta)
if self.test_cfg.mode == 'slide':
seg_logit = self.slide_inference(img, img_meta, rescale)
else:
seg_logit = self.whole_inference(img, img_meta, rescale)
output = F.softmax(seg_logit, dim=1)
flip = img_meta[0]['flip']
if flip:
flip_direction = img_meta[0]['flip_direction']
assert flip_direction in ['horizontal', 'vertical']
if flip_direction == 'horizontal':
output = output.flip(dims=(3,))
elif flip_direction == 'vertical':
output = output.flip(dims=(2,))
return output
def simple_test(self, img, img_meta, rescale=True):
"""Simple test with single image."""
seg_logit = self.inference(img, img_meta, rescale)
seg_pred = seg_logit.argmax(dim=1)
if torch.onnx.is_in_onnx_export():
# our inference backend only support 4D output
seg_pred = seg_pred.unsqueeze(0)
return seg_pred
seg_pred = seg_pred.cpu().numpy()
# unravel batch dim
seg_pred = list(seg_pred)
return seg_pred
def aug_test(self, imgs, img_metas, rescale=True):
"""Test with augmentations.
Only rescale=True is supported.
"""
# aug_test rescale all imgs back to ori_shape for now
assert rescale
# to save memory, we get augmented seg logit inplace
seg_logit = self.inference(imgs[0], img_metas[0], rescale)
for i in range(1, len(imgs)):
cur_seg_logit = self.inference(imgs[i], img_metas[i], rescale)
seg_logit += cur_seg_logit
seg_logit /= len(imgs)
seg_pred = seg_logit.argmax(dim=1)
seg_pred = seg_pred.cpu().numpy()
# unravel batch dim
seg_pred = list(seg_pred)
return seg_pred

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