In Theories And Methods Of Three-dimensional Modeling Of The Virtual City

As the virtual expression, operational environment and interactive interface of the digital city, Virtual city is the multi-dimensional information space and network information space based on the integration of geographic information system technology, computer technology, modern communication network technology, virtual reality technology. Virtual city provides a new kind room for the people to participate in the plan, design and management of the city. In the construction of the virtual city, 3D modeling is one of the most important fundamental works, it is also the important part of the virtual city system. This thesis mainly studied the theory and method of the virtual city 3D modeling, realized a experimental system of virtual city.The major study contents of this thesis concludes: the data capture of the virtual city 3D modeling; the comparative study on the common softwares in virtual city 3D modeling and the realization of virtual city roamming system; how to use Creator software of the MultiGen Inc. to model the terrain and all kinds of building in the virtual city system; how to use the Vega software of the MultiGen Inc. to develop the virtual city roamming system; the study of some key technologies in the 3D modeling of the virtual city and virtual city roamming system. At last the author prospected the integrated study of the virtual city technology and geographical information system technology.