Open Geospatial Consortium

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Open Geospatial Consortium
(OGC)
logo
legal form Nonprofit organization
founding 1994
motto Making location count
main emphasis Development of open standards
Action space Worldwide
Members over 500
Website www.opengeospatial.org

The Open Geospatial Consortium ( OGC ) is a non-profit organization founded in 1994 as the Open GIS Consortium with the aim of defining the development of spatial information processing (especially geodata ) on the basis of generally applicable standards for the purpose of interoperability . The OGC is made up of members from government organizations, private industry and universities, whose membership in the OGC is chargeable. For its part, the OGC has been a member of the World Wide Web Consortium (W3C) since January 2007 . The registered trademark is called OpenGIS .

Members

The OGC currently has 523 active members, including well-known members who are distributed across countries as follows:

United States

Autodesk , ESRI , Intergraph , Google Inc. , IBM , Microsoft , NASA , Oracle , MIT .

Austria

AIT , Frequentis , University of Salzburg , TU Vienna .

Switzerland

University of Geneva , ETH Zurich , ETH Lausanne , University of Applied Sciences Northwestern Switzerland

Standards

OGC standards enable different GIS to communicate.

The development of open standards is based on freely available specifications, which range from abstract descriptions of the structure, components and functionality of a service-based GIS in the sense of the OGC to detailed specifications of the implementation of the services . Here, however, the specific implementation of the software is not prescribed, but the various interfaces of a service as well as its properties and behavior are specified.

The way to these specifications runs through a long discussion in the OGC, the result of which ultimately results in a “specification”.

The OGC defines two categories of GIS products, depending on how comprehensively and precisely the software follows the OGC specifications:

  • Implementing Products are software products that implement OGC specifications but have not yet passed a conformity test.
  • Compliant Products are software products that follow the specifications of the OGC. When a product has been tested and conformity has been confirmed by the OGC test program, the product is automatically listed as "compliant" on the OGC website.

Web Service Framework

With the service-based concept of the OGC, a shift in GIS development from monolithic systems to distributed interoperable services ( web services ) is brought about. Basic services exist both for the visualization of geographic data (e.g. WMS ) and for direct access to data in further processable form (e.g. WFS for vector data and WCS for spatio-temporal raster data, etc.).

Sensor web enablement

The Sensor Web Enablement initiative expands the web integration of sensors and sensor networks.

OpenGIS Web Services

The OpenGIS Web Services (OWS) include: a. counted the following services:

  • CSW - Catalog Service, for searching metadata
  • WCS - Web Coverage Service, for downloading coverage data (i.e. spatiotemporal raster, point cloud, TIN and mesh data)
  • WFS - Web Feature Service, for downloading feature data
  • WMS - Web Map Service, for the visual representation of geodata as maps

The XML -Dialect Geography Markup Language (GML) has been developed for the exchange, description and storage of geometries and the associated attributes .

Interface standards

The "Interface Standards" (IS, formerly called "Implementation Specifications") are detailed technical descriptions of the structure of the individual interfaces . The entire adoption process within the OGC must be completed before these specifications are adopted.

The following list contains the name of the specification with the respective abbreviation (in brackets) and the current version number.

See also

Web links

Individual evidence

  1. ↑ a b OGC Members. Open Geospatial Consortium, May 20, 2015, accessed November 10, 2017 .
  2. ↑ Sam Bacharach: OGC® Joins W3C to Help Add Geospatial to the Web. Open Geospatial Consortium, January 17, 2007, accessed November 29, 2010 .
  3. ↑ Implementing Products. Open Geospatial Consortium, accessed December 17, 2010 .
  4. ↑ Compliant Products. Open Geospatial Consortium, accessed December 17, 2010 .