Surface modelling in 3D city information system

Geographical information systems deal with terrain, cartographical and urban information; these systems allow gathering, maintaining and presentation of the included data. The approach of combininggeographical information systems with visualization methods of virtual reality is presented in this article. Virtual 3D City Information System is a project which purpose is to model parts of the city to 3D graphics using polygonal modelling for modelling objects by representing their surfaces using polygons. Realappearance is provided by using textures. Usually 3D exterior contains large data set of polygons. Presented system contains three parts: editor (modelling part), database and visualisation part. Thesystem is controlled by script (Python language using) too. In conclusion are described some results of visualization of 3D scene that is represented as Ko ice city part.