COG

The Studio Platform load Cloud-Optimized GeoTIFFs (COG) by specifying URLs to standardized Spatio-Temporal Asset Catalog (STAC) metadata.

STAC metadata requirements

Studio provides tiling and metadata services but can work against external tiling services provided that they conform to standard STAC and tiling conventions.

The metadata file must be a valid STAC Item, version 1.0.0 or higher. STAC Collections and Catalogs are not currently supported.
Raster data referenced in STAC assets should be Cloud-Optimized GeoTIFFs and need to be publicly accessible via HTTPS.
STAC item must have Electro-Optical and Raster extensions, and at least one asset must have both eo:bands and raster:bands information. common_name must be provided in eo:bands and data_type must be provided in raster:bands. For categorical bands statistics.minimum and statistics.maximum must be set in raster:bands.

Raster data_type support table:

Data type	Description	Supported
int8	8-bit integer	Yes
int16	16-bit integer	Yes
int32	32-bit integer	Yes
int64	64-bit integer	No
uint8	unsigned 8-bit integer (common for 8-bit RGB PNG's)	Yes
uint16	unsigned 16-bit integer	Yes
uint32	unsigned 32-bit integer	Yes
uint64	unsigned 64-bit integer	No
float16	16-bit float	No
float32	32-bit float	No
float64	64-big float	No
cint16	16-bit complex integer	No
cint32	32-bit complex integer	No
cfloat32	32-bit complex float	No
cfloat64	64-bit complex float	No
other	Other data type than the ones listed above (e.g. boolean, string, higher precision numbers)	No

Categorical data

The Studio Platform supports categorical band channels where every pixel is underlying to some category (eg. snow, agriculture, water, clouds etc.). Every pixel of an image has a numeric value related to some category. For appropriate re-scaling colormaps, statistics.minimum and statistics.maximum must be set in raster:bands extension (Raster extension statistics).