88 lines
2.5 KiB
Python
88 lines
2.5 KiB
Python
from __future__ import annotations
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"""Create 80/20 train/test split from GTA-UAV-LR pair JSONs.
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Merges cross-area train+test (33,708 pairs), shuffles deterministically,
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and saves new 80/20 split JSONs.
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Usage:
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python -m scripts.make_split [--ratio 0.8] [--seed 42]
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"""
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import argparse
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import json
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import logging
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import random
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from pathlib import Path
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import coloredlogs
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LOGGER = logging.getLogger("caption_test.make_split")
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_RGB_ROOT = Path("/media/servml/SSD_2_2TB/datasets/cvgl_datasets/GTA-UAV-LR")
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def main() -> None:
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parser = argparse.ArgumentParser(description="Create 80/20 split for GTA-UAV-LR.")
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parser.add_argument("--ratio", type=float, default=0.8, help="Train ratio (default 0.8).")
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parser.add_argument("--seed", type=int, default=42, help="Random seed.")
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parser.add_argument(
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"--output-dir", type=str, default="meta",
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help="Output directory for split JSONs.",
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)
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args = parser.parse_args()
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coloredlogs.install(
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level="INFO", logger=LOGGER,
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fmt="%(asctime)s %(name)s %(levelname)s %(message)s",
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)
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# Load both original splits.
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train_path = _RGB_ROOT / "cross-area-drone2sate-train.json"
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test_path = _RGB_ROOT / "cross-area-drone2sate-test.json"
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LOGGER.info("📂 Loading %s", train_path.name)
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with open(train_path) as f:
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part1 = json.load(f)
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LOGGER.info("📂 Loading %s", test_path.name)
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with open(test_path) as f:
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part2 = json.load(f)
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all_pairs = part1 + part2
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LOGGER.info("📊 Total pairs: %d", len(all_pairs))
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# Shuffle deterministically.
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rng = random.Random(args.seed)
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rng.shuffle(all_pairs)
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# Split.
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n_train = int(len(all_pairs) * args.ratio)
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train_pairs = all_pairs[:n_train]
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test_pairs = all_pairs[n_train:]
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LOGGER.info(
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"✂️ Split %.0f/%.0f: train=%d (%.1f%%) test=%d (%.1f%%)",
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args.ratio * 100, (1 - args.ratio) * 100,
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len(train_pairs), 100 * len(train_pairs) / len(all_pairs),
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len(test_pairs), 100 * len(test_pairs) / len(all_pairs),
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)
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# Save.
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out_dir = Path(args.output_dir)
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out_dir.mkdir(parents=True, exist_ok=True)
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train_out = out_dir / "train_80.json"
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test_out = out_dir / "test_20.json"
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with train_out.open("w", encoding="utf-8") as f:
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json.dump(train_pairs, f)
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with test_out.open("w", encoding="utf-8") as f:
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json.dump(test_pairs, f)
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LOGGER.info("💾 Saved: %s (%d pairs)", train_out, len(train_pairs))
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LOGGER.info("💾 Saved: %s (%d pairs)", test_out, len(test_pairs))
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if __name__ == "__main__":
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main()
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