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《Acta Geodaetica et Cartographica Sinica》 2009-06
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Research on the Methods of 3D Virtual City Construction Based on CA Model

WANG Haiying1,ZHANG Xinchang1,KANG Tingjun1,CAO Kaibin21. Geography and Planning School,Sun Yat-sen University,Guangzhou 510275,China; 2. Survey Team of Zengcheng City Construction,Zengcheng 511300,China  
This paper unified the urban cellular automata method and the virtual reality technology to construct a three-dimension (3D) virtual city which was based on automata. First,constructing an urban CA model that is based on the data structure of cellular entities can present the plane distribution state of the building in the 3D virtual city. The CA model was used to compute a group of temporal layout data of buildings in the virtual city. Then,DEM and DOM data were used to generate real three-dimensional terrain and produce different type library about 3D building model. Finally,The program was used to load and lay the 3D buildings to the corresponding position in the 3D virtual terrain to obtain a 3D virtual city,according to the cellular entity attribute.
【Fund】: 国家自然科学基金(40971216)
【CateGory Index】: TP391.9
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