Short URL

OGC Web Services Phase 2

 

Other Geospatial Interoperability areas:

Loading, please wait...

OGC Web Services Phase-1.2

The OGC Web Services Initiative Thread Set 2 and Demonstration Style Management and Sensor Web

On April 18, 2002, The Center for Advanced Spatial Technology (CAST) proposed several contributions in both the Web Mapping Style Management and Sensor Web efforts.

Previous initiatives have been very successful in services generating portrayed views of geospatial information including web map services and web coverage services in addition to the style layer description encoding. The next logical step in visualizing geospatial information is providing instances and management of styles to be used by portrayal services and allowing users to discover and select styles through registries.

Portrayal services enable the translation of geospatial data into understandable and actionable information. Users are accustomed to visualizing features in predefined cartographic representations. Therefore styles must be stored in repositories that allow portrayal services to access and use defined styles instances to render feature information.

CAST developed Style Layer Descriptors (SDL) that allows similar feature types from different sources to be portrayed the same.  OGC has defined methods in the Style-Layer Descriptor Report that allow SLDs to be inserted and obtained from web map servers through the "GetStyles" and "PutStyles" operations. The style registry architecture prototyped at CAST allows styles to be defined in SLD fragments that references feature types that can be named differently in multiple map servers. These SLD fragments are replaced with the "feature type" layer descriptions. This architecture is a geospatial solution that preserves the integrity of the style definitions in a style registry instead of multiple product view generators.

CAST also enhanced the Sensor Collection Service (SCS) to include the Landsat and MODIS satellite sensors.

More information is available here.