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) 
<y 
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. 
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