Building Model Creating and Storing in 3d Urban Gis

New developments in urban planning, urban landscape, real estate management and so on, call for new demands for 3D Object Model. The building models are the most important in 3D object model. With the development of 3D data acquisition, the visualization aspect often is detail considered, however, only a few investigation about the creating and storing of 3D object model is discussed. In this paper, firstly the method of creating building model is presented, this includes the data structure and model of 3D building model. Secondly, a data structure combining the data model of building model and R-tree index, which is used to store 3D building data, is presented. Finally, a system prototype is in development, joining aspects of visualization interface and a database for building model, and several results are illustrated.