
Proceedings Paper
Real-time visualization of virtual geographic environment using the view-dependent simplification methodFormat | Member Price | Non-Member Price |
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Paper Abstract
A real-time virtual geographic environment (VGE) can serve as interactive, intuitive visualization tools for exploring,
analyzing, synthesizing, and simulating multi dimension geo-data and complex geo-phenomena. The VGE scene can be
constructed by terrain models, building models, and natural gaseous phenomena models. This paper used a viewdependent
simplification method to improve the rendering efficiency of the VGE scene. The continuous level of detail
technique(C-LOD) algorithm was adopted to achieve high frame rates by generating an approximate view-dependent
triangulation of large terrain scene. Meanwhile image-based rendering techniques such as the imposter billboard were
used to speed up the visualization of 3D object models (e.g., 3D building, 3D trees, smoke, cloud and so on). Using the
Pearl River Delta (PRD) region in China as a case area, the visualization environment was built to support real-time
rendering of larger-scale geo-scene. Experiment results prove that the scheme addressed in the paper can improve the
overall efficiency.
Paper Details
Date Published: 3 November 2008
PDF: 8 pages
Proc. SPIE 7143, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 71432F (3 November 2008); doi: 10.1117/12.812617
Published in SPIE Proceedings Vol. 7143:
Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments
Lin Liu; Xia Li; Kai Liu; Xinchang Zhang; Aijun Chen, Editor(s)
PDF: 8 pages
Proc. SPIE 7143, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 71432F (3 November 2008); doi: 10.1117/12.812617
Show Author Affiliations
Jun Zhu, The Chinese Univ. of Hong Kong (Hong Kong, China)
Southwest Jiaotong Univ. (China)
Hui Lin, The Chinese Univ. of Hong Kong (Hong Kong, China)
Southwest Jiaotong Univ. (China)
Hui Lin, The Chinese Univ. of Hong Kong (Hong Kong, China)
Bingli Xu, The Chinese Univ. of Hong Kong (Hong Kong, China)
Ya Hu, The Chinese Univ. of Hong Kong (Hong Kong, China)
Southwest Jiaotong Univ. (China)
Ya Hu, The Chinese Univ. of Hong Kong (Hong Kong, China)
Southwest Jiaotong Univ. (China)
Published in SPIE Proceedings Vol. 7143:
Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments
Lin Liu; Xia Li; Kai Liu; Xinchang Zhang; Aijun Chen, Editor(s)
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