| """Load a downloaded ImageFolder snapshot and check its full ID population.""" |
| import argparse |
| import json |
| from pathlib import Path |
| from datasets import Image, load_dataset |
|
|
|
|
| def load(root): |
| dataset = load_dataset("imagefolder", data_dir=str(root / "data"), |
| split="test", drop_labels=True) |
| expected = {json.loads(line)["image_id"] for line in |
| (root / "release/image_manifest.jsonl").read_text().splitlines()} |
| assert len(dataset) == 11534 |
| assert set(dataset["image_id"]) == expected |
| assert "label" not in dataset.column_names, "Shard directory names are not labels" |
| row = dataset[0] |
| assert row["image"].size == (row["width"], row["height"]) |
| streamed = load_dataset("imagefolder", data_dir=str(root / "data"), |
| split="test", drop_labels=True, streaming=True) |
| streamed = streamed.cast_column("image", Image(decode=False)) |
| assert {row["image_id"] for row in streamed} == expected |
| print(f"Loaded {len(dataset):,} images; full streaming ID population matches.") |
| return dataset |
|
|
|
|
| if __name__ == "__main__": |
| parser = argparse.ArgumentParser(description=__doc__) |
| parser.add_argument("--root", type=Path, default=Path(__file__).resolve().parents[1]) |
| load(parser.parse_args().root.resolve()) |
|
|
