Application of VRGIS in dynamic urban planning

With the rapid development of information technology, urban planning visualization is more and more concerned. This paper describes 3D technologies associated with urban planning, analysis the feasibility of urban planning visualization, and some core techniques of 3D urban planning system based on virtual reality (VR) and geographic information system (GIS). 3D model generation, communication methods between GIS and 3D scene and system integration are also discussed in this paper. The example system shows that it is helpful for designers to achieve 2D and 3D urban information and make decisions of urban planning schemes.