| import os
|
| import datasets
|
| import rasterio
|
| import tqdm
|
|
|
| class SSL4EOEUForest(datasets.GeneratorBasedBuilder):
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| def _info(self):
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| return datasets.DatasetInfo(
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| description="SSL4EO-EU Forest dataset with four-season of Sentinel-2 timestamps and bounding box metadata extracted from image folders.",
|
| features=datasets.Features({
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| "image_path": datasets.Value("string"),
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| "mask_path": datasets.Value("string"),
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| "start_timestamp": datasets.Value("string"),
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| "end_timestamp": datasets.Value("string"),
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| "sentinel_tile_id": datasets.Value("string"),
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| "bbox": {
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| "minx": datasets.Value("float32"),
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| "maxx": datasets.Value("float32"),
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| "miny": datasets.Value("float32"),
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| "maxy": datasets.Value("float32"),
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| }
|
| }),
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| citation="""@misc{ssl4eo_eu_forest,
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| author = {Nassim Ait Ali Braham and Conrad M Albrecht},
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| title = {SSL4EO-EU Forest Dataset},
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| year = {2025},
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| howpublished = {https://huggingface.co/datasets/dm4eo/ssl4eo-eu-forest},
|
| note = {This work was carried under the EvoLand project, cf. https://www.evo-land.eu . This project has received funding from the European Union's Horizon Europe research and innovation programme under grant agreement No. 101082130.}
|
| }""",
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| homepage="https://www.evo-land.eu",
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| license="CC-BY-4.0",
|
| )
|
|
|
| def _split_generators(self, dl_manager):
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| use_local = os.environ.get("HF_DATASET_LOCAL", "false").lower() == "true"
|
|
|
| if use_local:
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| root = os.path.abspath(".")
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| else:
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| root = dl_manager.download_and_extract(".")
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|
|
| images_dir = os.path.join(root, "images")
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| masks_dir = os.path.join(root, "masks")
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|
|
| return [
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| datasets.SplitGenerator(name=datasets.Split("all"), gen_kwargs={
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| "images_dir": images_dir,
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| "masks_dir": masks_dir
|
| })
|
| ]
|
|
|
| def _generate_examples(self, images_dir, masks_dir):
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| sample_id_list = sorted(os.listdir(images_dir))
|
| key = 0
|
|
|
| for sample_id in tqdm.tqdm(sample_id_list, desc="Indexing samples", unit="sample"):
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| sample_path = os.path.join(images_dir, sample_id)
|
| if not os.path.isdir(sample_path):
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| continue
|
|
|
| timestamp_dirs = sorted(os.listdir(sample_path))
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| mask_path = os.path.join(masks_dir, sample_id, "mask.tif")
|
| if not os.path.exists(mask_path):
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| continue
|
|
|
| for ts in timestamp_dirs:
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| parts = ts.split("_")
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| if len(parts) != 3:
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| continue
|
|
|
| start_ts, end_ts, tile_id = parts
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| image_path = os.path.join(sample_path, ts, "all_bands.tif")
|
| if not os.path.exists(image_path):
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| continue
|
|
|
| try:
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| with rasterio.open(image_path) as src:
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| bounds = src.bounds
|
| except Exception:
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| continue
|
|
|
| yield key, {
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| "image_path": image_path,
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| "mask_path": mask_path,
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| "start_timestamp": start_ts,
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| "end_timestamp": end_ts,
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| "sentinel_tile_id": tile_id,
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| "bbox": {
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| "minx": bounds.left,
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| "maxx": bounds.right,
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| "miny": bounds.bottom,
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| "maxy": bounds.top
|
| }
|
| }
|
| key += 1
|
|
|
