OGC Web Services Initiative, Phase 1.2

The OWS 1.2 testbed focused on extending engineering specifications developed in OWS 1.1 and other initiatives including: OpenGIS® Specifications for OGC Common Architecture, Web Mapping, Imagery Exploitation and Sensor Web (including dynamic sensors). Results included more than twenty interoperability program reports (IPRs) on:

  • GML encoding extensions for topology, multidimensions, and coverages. The GML work involved a "round trip" experiment that was very informative.
  • Service chaining (common expression and execution) and service metadata extensions for complex models (e.g., science models) with spatial components.a
  • New technical standards approaches to dealing with semantic differences in geodata and its metadata.
  • Symbology management (Styled Management Service).
  • An Image Handling Service architecture with emphases on image metadata and image archiving "e-commerce" architecture for image analysis that connects information providers, maintainers, and consumers in collaborating communities, enabling Web-based imagery exploitation.

The demonstration showed users easily discovering, accessing, superimposing, and portraying satellite and aerial imagery, vector data, and scientific data stored on servers in Europe, North America, and Australia. New draft OpenGIS® Specifications for metadata and services were used to implement registries that enabled discovery of data and geoprocessing services. Interfaces based on OGC's new OpenGIS® Sensor Web Specifications enabled discovery of and real-time access to measurements from meteorological, water quality, air quality, and seismic sensors. The OpenGIS Web Coverage Service and Coverage Portrayal Service were demonstrated accessing a variety of imagery including visible, hyperspectral and radar.