×

You are using an outdated browser that does not fully support the intranda viewer.
As a result, some pages may not be displayed correctly.

We recommend you use one of the following browsers:

Full text

Title
The 3rd ISPRS Workshop on Dynamic and Multi-Dimensional GIS & the 10th Annual Conference of CPGIS on Geoinformatics
Author
Chen, Jun

ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS’’, Bangkok, May 23-25, 2001
disadapted the requirement of quick development of cities to use
the traditional management manner based on the handwork, it’s
imperative under the situation to develop and to implement
elaborate CAD
3D observation data based on
data
the DPW+real texture
digital engineering of urban planning, construction, management
and service. The foundation of digital city is the digital
cityscape model (CyberCity), which is obviously better than
2D GIS vector data + height attribute
+ simulated meterial texture images
o
The tool of 3D creating and editing (VRModel)
DEM,DOM and3D model
Database management system
O
3D visualization and interaction window CCGIS
pipeline
house
landuse
planning
Figure 1 Architecture of CCGIS
current 2D vector GIS in the applications of telecommunication
and tour. Along with the improvement of IT, the cybercities in the
internet approximately experienced three stages. The first supply
the information in the form of text. The information about cities is
a Hypertext Markup Language (HTML) page or a site in the
computer network. This city is more like a catalogue than a city.
The second stage is two-dimensional site presenting the 2D
maps or the landscapes of the cities. A majority of the sites use
the whole maps of the cities as the homepages and as long as
users click the maps they will enter into the corresponding place
and enjoy the cities’ scene. Even though those cybercities
present better dimensional order of the cities with the help of the
maps and the landscapes the obvious image and transfers
speed are at discount. Furthermore, with the images and details
increasing it is uneasy to find those images. However, whether
the users like or not the designed cities, they must accept them
so this city is static. The third is a three-dimensional space and
also our topic in this article. In the 3D real world’s view, it is
made infinitely easier to perspective scene than in the 2D view.
The 3D city model can be traced back to early 1980s. Skidmore
Owens and Merrill (SOM) which were consulting firms. SOMs’
Chicago wire frame at that time inspired much of early work in
this area. This private firm made use of the virtualization to
impress clients and win more projects. Another typical example
is that the highly detailed geometric model of Melbourne used in
conjunction with virtual design studio teaching with the University
of Melbourne. Now more and more research departments are
working on this area. With the development of World Wide Web
technology, virtualization technology and spatial information
system technology and so on, the 3D cybercity will increasingly
develop. To construct cybercity needs the solution of various key
technologies, such as 3D reconstruction, database management
and virtual reality, and so on. Therefore, based on the R & D of
copyright owned GIS software (GeoStar), the CCGIS (GIS for
CyberCity) is proposed to be developed. Fig.1 illustrates the
architecture of CCGIS.
405