GEOSPATIAL MODELING
3D City Model of
Copenhagen
BlomInfo A/S
BlomInfo A/S has created a full 3D model of
the City of Copenhagen and a number of
other cities in Denmark. The city models are
produced in BlomInfo’s MicroStation-based
photogrammetric mapping environment. The
3D city models consist of coherent vectors
forming what BlomInfo terms a“grid model.”
BlomInfo has developed its own production
tools for automatic creation of shapes on the
roofs, facades, and on the terrain.
The models are highly accurate. For example,
the accuracy of building models are better
than 10 cm / 15 cm (plane / height) and the
accuracy of the digital terrain model is better
than 50 cm. Details bigger than 3 meters in
roofs (dormers, chimneys, and so on) are
included and trees taller than four meters are
registered.
The 3D city models are used for urban planning
and public administration in the municipalities.
This includes visualization of planned buildings
and projects, solar studies, and Internet-based
debate on the urban development.
A MicroStation plug-in for generating
Internet files has been enhanced by
BlomInfo to support visualization of
planned areas by showing or hiding
buildings, changing colors, showing
alternative building layouts, and submitting comments about the planed
projects.
The City of Copenhagen has used the
3D city model for public debate on a
planned project in the harbor area. ;
GEOSPATIAL MODELING
ChemView
Chemelot B.V.
data. Paper is sufficient for limited engineering use, but very inadequate for getting data
fast to a large audience. Clearly, Web publishing techniques were needed to accomplish
this goal.
Bentley Benelux designed a fast conversion
based on GML from DGN and Oracle into a
Web publishing format. Chemelot worked
with Bentley to implement the technology.
The better service that Chemelot Services
can now deliver is the real advantage in day-to-day operations of the plants, as well as
quick data access in case of disaster. ;
In the DSM terrain, some 80 plants are interconnected with overhead and underground
cables and pipes transporting 200 types of
gases and fluids, as well as electrical power
and communication signals.
Chemelot has a long history in using CAD
and technology, going back as far as IGDS and
DMRS. Today, FRAMME is used as a geospatial
asset management tool, but it provides no
data distribution except for plotting. In 2002
the large DSM corporation was split into a
number of individual companies that are all
on the same terrain and need access to the
