OGC Building Blocks for STAC

Assets sub-schema reused in items and collections

A SpatioTemporal Asset Catalogs (STAC) collection. This building block implements validation of examples using the canonical schema and a JSON-LD context to a map to a RDF format that can support richer logical constraints and integration with related data.

A SpatioTemporal Asset Catalogs (STAC) collection. This building block implements validation of examples using the canonical schema and a JSON-LD context to a map to a RDF format that can support richer logical constraints and integration with related data.

A SpatioTemporal Asset Catalogs (STAC) collection. This building block implements validation of examples using the canonical schema and a JSON-LD context to a map to a RDF format that can support richer logical constraints and integration with related data.

Version-neutral SpatioTemporal Asset Catalogs (STAC) item - STAC versions are schema incompatible due to hard restrictions on version numbers. This BuildingBlock covers the interoperability that exists between versions by identifying the common elements, and is extended by version-specific restrictions and extensions.

TBD

CF Extension to the SpatioTemporal Asset Catalog (STAC) specification. Allows to provide the Standard Name Table based on the CF metadata convention.

STAC Classification Extension for STAC Items and STAC Collections.

Electro-Optical (EO) Extension to the SpatioTemporal Asset Catalog (STAC) specification. EO data is considered to be data that represents a snapshot of the Earth for a single date and time. It could consist of multiple spectral bands in any part of the electromagnetic spectrum. Examples of EO data include sensors with visible, short-wave and mid-wave IR bands (e.g., the OLI instrument on Landsat-8), long-wave IR bands (e.g. TIRS aboard Landsat-8).

STAC Extension for the ESA Open Science Catalog

STAC Processing Extension for STAC Items and STAC Collections.

An item can describe assets that are rasters of one or multiple bands with some information common to them all (raster size, projection) and also specific to each of them (data type, unit, number of bits used, nodata). A raster is often strongly linked with the georeferencing transform and coordinate system definition of all bands (using the projection extension). In many applications, it is interesting to have some metadata about the rasters in the asset (values statistics, value interpretation, transforms).

Themes Extension to the SpatioTemporal Asset Catalog (STAC) specification. A knowledge organization system used to classify the resource (controlled vocabularies / keywords)

Themes Extension to the SpatioTemporal Asset Catalog (STAC) specification. A knowledge organization system used to classify the resource (controlled vocabularies / keywords)

Themes Extension to the SpatioTemporal Asset Catalog (STAC) specification. A knowledge organization system used to classify the resource (controlled vocabularies / keywords)

A SpatioTemporal Asset Catalogs (STAC) item with a provenance trace supporting the PROV-O model and DAG (directed acyclic graph) through both object nesting and references

A SpatioTemporal Asset Catalogs (STAC) item. This version specific building block enforces the schema restriction on STAC version by importing the canonical STAC 1.0 schema, but also cross-validates against the STAC version agnostic schema.

A SpatioTemporal Asset Catalogs (STAC) item

STAC Machine Learning Model (MLM) Extension to describe ML models, their training details, and inference runtime requirements.