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《Beijing Surveying and Mapping》 2008-02
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Research on Multiresolution Dynamic Creating Networks Algorithm of DEM based on DirectX

WANG Ke-ke1,ZHANG Li-chao1,PAN Zhen2,WANG Qing-shan1,ZHANG Shi-quan1 1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou,Henan,450052; 2.First the Management Committee High & New Technology Industrial Development Zone of Zhengzhou,Zhengzhou,Henan,450001  
This paper puts forward an algorithm to dynamic create networks for DEM basing on DirectX and LOD.This algorithm uses the quadtrees to save DEM data and uses LOD to simplify the triangles dynamically and create networks dynamically for DEM.This algorithm can simplify the complicated terrain data effectively and it deletes and simplifies the redundant triangles basing on satisfying the need of reality.According to the tests,it is shown that the screen created by this algorithm can display in real time.
【CateGory Index】: P208
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Chinese Journal Full-text Database 1 Hits
1 CHEN Gang, YANG Ming-guo, WANG Ke-wei (Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China);An Algorithm of Dynamic Triangulation for the TIN Model of Terrain[J];Journal of Institute of Surveying and Mapping;2003-04
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