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Virtual City Construction Modeling and Visualization Research and Practice

Author: LiuLiNa
Tutor: WangJiaYao
School: PLA Information Engineering University
Course: Cartography and Geographic Information Systems
Keywords: Virtual City Virtual Geographic Environments Modeling urban landscape Urban landscape visualization Technical level of detail (LOD) Virtual Reality Modeling Language (VRML)
CLC: TP391.9
Type: Master's thesis
Year: 2005
Downloads: 452
Quote: 10
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Abstract


In today's information society development is to stage forward. The city is the Earth's surface demographic, economic, technological and information-intensive regions, cities bear the brunt of information technology has become the key information and focus. City Informatization eventually through the \Virtual City as a digital city environment , and information needed to run the expression , interactive interface, to become an important city information expression . In the virtual city construction , the urban landscape model and 3D visualization is the underlying core technology. Paper combines research projects related to the principle of virtual urban construction , urban 3D landscape modeling and visualization, information query and analysis, 3D city model of Web browsing and other key technologies in-depth study . Paper work done mainly includes three parts: an in-depth study of a virtual city construction principles, methods and key technologies. According to the concept of virtual geographic environment , the design of a virtual city architectural framework . 2 , focusing on research and implementation of a virtual urban landscape modeling and 3D visualization . Proposed a virtual urban landscape for modeling and 3D visualization of three-dimensional object-oriented data model , a comprehensive research -oriented virtual city construction topography , buildings and other three-dimensional modeling techniques . On this basis, combined with research projects, proposed a rapid build urban landscape models modeling method . Depth study of the virtual scene with real-time graphics rendering acceleration algorithms, as well as enhanced realism technologies. Through the technical level of detail geometry and visibility reduction technology , this paper proposes a method to realize the effective real-time rendering algorithms. 3 , research and implementation of several three-dimensional urban spatial information analysis algorithm, using VRML technology to achieve a three-dimensional model of the city 's web browser . Finally, according to the principle of virtual urban construction and proposed some methods to establish a virtual city prototype system , and in the \

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Computer simulation
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