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7. CONCLUSIONS 
This paper discusses the key technologies that achieve the 
Web-based distributed virtual city environment. The 
availability of establishing web-based distributed system, 
Which is based on CORBA and heterogeneous network, is 
testifies. The LOD building model for 3D city visualization is 
implemented for the requirements of improving the speed of 
roaming the city scene. The emphasis of study in the future are 
multi-user management and multi-user's cooperation in the 
distributed virtual city environment, etc. 
REFERENCES 
Siegel. CORBA Fundamentals and Programming, New York: 
John Wiley & Sons, Inc., 1996 
Alexander — Koninger, 1998. 3D-GIS for 
GeoInformations, 2:1 pp, 79-103. 
purposes. 
Armin Gruen, Xinhua Wang, 1998. CC-Modeler: a topology 
sénerator for 3-D City models. ISPRS Journal of 
Photogrammetry&Remote Sensing S3,pp. 286-295, 
1137 
  
Bisheng Yang, Qingquan Li, Deren Li, 1999. 
Modelling for 3D City Model. Geo-spatial 
Science, Vol.2.No.l, pp.109-114. 
Building 
In-formation 
MICHAEL GRBER, Graz, 1999. Managing Large 3D Urban 
Database. In: 47" Photogrammetry Week, Stuttgart, pp, 341- 
349. 
Zlatanova, S. and Gruber. M, 1998, 3D GIS on the Web, In: 
Proceedings of ISPRS, Commission IV, Stuttgart, Germany, 
691-699 
Zlatanova, S., 3D GIS for urban development, Ph.Dissertation, 
ITC, 2000 
David Koller, Peter Lindstrom, William Ribarsky, et al. Virtual 
GIS: A Real-Time 3D Geographic Information System. In 
Proceedings of Visualization'95. GVU Technical Report 95-14. 
ftp://ftp.cc.gatech .edu/pub/gvu/tr/1995/95.] 4.pdf 
Peter Lindstrom, David Koller, William Ribarsky, et al An 
Integrated Global GIS and Visual Simulation System. 
ftp://ftp.gvu.gatech.edu/ pub/gvu/tr/1997/97-07.pdf 
Dave Snowdon, Chris Greenhalgh, Steve Benford, et al. 
1996,A review of distributed architecture for networked virtual 
reality. Virtual Reality, 2(1): 155-175 
MacEachren, A.M., Edsall R., Daniel Haug D., Baxter R., Otto 
G., Masters R., Fuhrmann, S. and Qian L., 1999, "Virtual 
Environments for Geographie Visualization: Potential 
and Challenges", Proceedings of the 1999 Workshop on new 
paradigms in information visualization and manipulation in 
conjunction with the eighth ACM international conference on 
Information and knowledge management, Kansas City, 
Missouri, United States. 
Rick Germas, Gert Van Maren, Edward Verbree, Frederik W 
Jansen. 1999, a multi-view VR interface for 3D GIS. Computer 
& Graphics 23, 497-506 
Kahkonen J, Lehto L. Kilpeinen T, et al.1999, Interactive 
visualization of geographical objects on the Internet. 
International Journal of Geographical Information Sciences, 
Vol (13): 429-438 
Moore K, Dykes J, Wood J, Using Java to interact with geo- 
referenced VRML with a virtual field course. Computers and 
Geosciences, 1999, 25:1125-1136 
ACKNOWLEDGEMENTS 
The work described in this paper was substantially supported 
by a Foundation for the Author of National Excellent Doctoral 
Dissertation of PR China no. 200244