Create nesteo_prototype.py

nesteo_prototype.py

@@ -0,0 +1,52 @@
+import os
+import pyarrow.parquet as pq
+import datasets
+
+_CITATION = ""
+_DESCRIPTION = "Wyvern dataset with encoded image arrays and masks per 2400m tile."
+_HOMEPAGE = ""
+_LICENSE = "cc-by-4.0"
+
+class NestEOPrototype(datasets.GeneratorBasedBuilder):
+    VERSION = datasets.Version("1.0.0")
+
+    def _info(self):
+        return datasets.DatasetInfo(
+            description=_DESCRIPTION,
+            citation=_CITATION,
+            homepage=_HOMEPAGE,
+            license=_LICENSE,
+            features=datasets.Features({
+                "tile_id": datasets.Value("string"),
+                "scene_id": datasets.Value("string"),
+                "start_datetime": datasets.Value("timestamp[us]"),
+                "end_datetime": datasets.Value("timestamp[us]"),
+                "image": datasets.Value("binary"),
+                "data_mask": datasets.Value("binary"),
+                "pixel_quality_mask": datasets.Value("binary"),
+                "shape": [datasets.Value("int32")],
+            }),
+        )
+
+    def _split_generators(self, dl_manager):
+        wyvern_path = os.path.join(dl_manager.manual_dir, "datasets_EO/Wyvern/grid_2400m")
+        return [datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={"folder_path": wyvern_path})]
+
+    def _generate_examples(self, folder_path):
+        idx = 0
+        for fname in sorted(os.listdir(folder_path)):
+            if fname.endswith(".parquet"):
+                table = pq.read_table(os.path.join(folder_path, fname))
+                df = table.to_pandas()
+                for _, row in df.iterrows():
+                    yield idx, {
+                        "tile_id": row["tile_id"],
+                        "scene_id": row["scene_id"],
+                        "start_datetime": row["start_datetime"],
+                        "end_datetime": row["end_datetime"],
+                        "image": row["image"],
+                        "data_mask": row["data_mask"],
+                        "pixel_quality_mask": row["pixel_quality_mask"],
+                        "shape": row["shape"],
+                    }
+                    idx += 1