Wayland, Mass., 6 January 2010 – The Open Geospatial Consortium, Inc.
(OGC®) is seeking broad input on enhancements and changes for a
revision of the OGC City Geography Markup Language (CityGML) Encoding
Standard (  http://www.opengeospatial.org/standards/citygml ). CityGML
is an open information model and XML-based encoding for the
representation, storage, and exchange of virtual 3D city models. CityGML
is implemented as an application schema of the OGC Geography Markup
Language 3 (GML3) Encoding Standard (
http://www.opengeospatial.org/standards/gml ), an international
standard for spatial data exchange and encoding approved by the OGC
and ISO.

In contrast to other 3D vector formats, CityGML (
http://www.citygml.org ) is based on a rich, general purpose semantic
model as well as reference system, geometry and graphics content which
support sophisticated analysis tasks. Applications include urban and
landscape planning; architectural design; tourist and leisure
activities; 3D cadastres; environmental simulations; mobile
telecommunications; disaster management; homeland security; vehicle,
pedestrian, and indoor navigation; training simulators; and mobile
robotics.

The current version 1.0 of CityGML was adopted as an official OGC
Standard in August 2008 and has come to wide use since then. The OGC
Technical Committee seeks input from the wider community in the form
of change requests, proposed additions and suggestions for the future
development of CityGML. These should be submitted by February 26,
2010. The public OGC online form for change and feature requests is
available at   http://www.opengeospatial.org/standards/cr.

The next version of CityGML will be a minor revision of the standard
to version 1.1. The anticipated release date will not be before autumn
2010. The main objective of this revision is to keep backwards
compatibility with the current version 1.0 of CityGML.  Change
and feature requests resulting in a loss of backwards compatibility
are welcome but will be postponed to a major revision of CityGML to
version 2.0.

The OGC® is an international consortium of more than 385
companies, government agencies, research organizations, and
universities participating in a consensus process to develop publicly
available geospatial standards that “geo-enable” the Web, wireless and
location-based services, and mainstream IT. Visit the OGC website at
http://www.opengeospatial.org.