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Ignore bands that have role "metadata" when loading with load_stac #971

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Ignore bands that have role "metadata" when loading with load_stac #971

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879bdec
Ignore bands that have role "metadata" when loading https://github.co…
EmileSonneveld Dec 12, 2024
7e394dc
Use mime_type instead of role to determine if band contains raster da…
EmileSonneveld Dec 13, 2024
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21 changes: 20 additions & 1 deletion openeogeotrellis/load_stac.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,9 +84,28 @@ def supports_item_search(coll: pystac.Collection) -> bool:
conforms_to = coll.get_root().extra_fields.get("conformsTo", [])
return any(conformance_class.endswith("/item-search") for conformance_class in conforms_to)

def is_raster_mime_type(mime_type: str) -> bool:
mime_type = mime_type.lower()
# https://github.com/radiantearth/stac-spec/blob/master/best-practices.md#common-media-types-in-stac
if (
mime_type.startswith("image/tif") # match both tif and tiff, just in case
or mime_type.startswith("image/vnd.stac.geotiff")
or mime_type.startswith("image/jp2")
or mime_type.startswith("image/png")
or mime_type.startswith("image/jpeg")
or mime_type.startswith("application/x-hdf") # matches hdf5 and hdf
or mime_type.startswith("application/x-netcdf")
or mime_type.startswith("application/netcdf")
):
return True

def is_band_asset(asset: pystac.Asset) -> bool:
roles_with_bands = ["data", "data-mask", "snow-ice", "land-water", "water-mask"]
return any(asset.has_role(role) for role in roles_with_bands) or "eo:bands" in asset.extra_fields
return (
any(asset.has_role(role) for role in roles_with_bands)
and (asset.media_type is None or is_raster_mime_type(asset.media_type))
or "eo:bands" in asset.extra_fields
)

def get_band_names(itm: pystac.Item, asst: pystac.Asset) -> List[str]:
def get_band_name(eo_band) -> str:
Expand Down