| Development of 3D city modeling is accompanied by the growing information technology progress and its demand for social, has now become the effective tool for spatial information service, and the power of this development is along with the rapid development of national information and become more strong, application of 3D city modeling has become common community concerns, the industry and the majority of users. The development of computer technology, virtual technology, database technology and visual technology and cognitive science, technology and theory, to lay the foundation theory and technology of 3D digital expression.In this thesis, a district of Jinzhou city of Liaoning Province as an example, status and the oretical knowledge of the area of 3D modeling, discussed the key technology of 3D City Modeling of 3D city, from the data acquisition technology, three-dimensional modeling technology, city 3D visualization, 3D GIS software system, review the current status of Technology development, 3D city modeling is the basis of city construction, is the premise and foundation of city land reasonable use and development business, is one of the important means to realize the development objective of the city.This paper firstly introduces the purpose and significance of 3D city modeling, further analysis of the development status of the domestic and abroad, the research background and research contents and chapters arrangement. Secondly, introduces the theory of 3D spatial data model, respectively, from the characteristics of spatial data, spatial data model, spatial data classification research status, spatial data model is constructed for research, using 3DMax software for a residential building in Jinzhou city is a model, finally by Open GL software visualization, and put forward the 3D building model of storage and expression of 3D City Modeling Visualization method. |
