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The Open Geospatial Consortium,
Inc. (OGC) is requesting public comment on the candidate CityGML
Encoding Standard.
CityGML
is a
Geography Markup Language
3 (GML3) application schema for the storage and
exchange of virtual 3D city models.
CityGML is a common information model for the representation of 3D
urban objects. It defines the classes and relations for the most
relevant topographic objects in cities and regional models with
respect to their geometrical, topological, semantical and appearance
properties. Included are generalization hierarchies between thematic
classes, aggregations, relations between objects, and spatial
properties. This thematic information goes beyond graphic exchange
formats and allows users to employ virtual 3D city models for
sophisticated analysis tasks in different application domains such as
simulations, urban data mining, facility management, and thematic
inquiries.
Activities that would benefit from the richness of CityGML data
include city planning, real estate, insurance, architectural design,
environmental simulation, mobile telecommunication, disaster
management, homeland security, facilities management, vehicle and
pedestrian navigation, training simulators and others. CityGML will
play an important role in the use of Building Information Models (BIM)
to improve interoperability among the information systems used in the
many domains of activity that involve design, construction, ownership
and operation of buildings and capital projects.
The RFC can be downloaded from
http://www.opengeospatial.org/standards/requests/47. Comments are due
by March 20, 2008.
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