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《Computer Simulation》 2007-10
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Triangular Network Modeling and Terrain Reconstruction Based on Contours

WENG Qiao-lin,JIANG Yu-ming(School of Computer Engineering,Xidian University,Xi'an Shanxi 710071,China)  
3D terrain is an indispensably important part of entironment simulation is widely used in many fields.This paper presents a method for building triangular network based on contour lines.The method builds Constrained Delaunay Triangulation using inherent quality and neighboured topological relation of contour lines,improves triangle expanding method,regarding Contour lines as the characteristic lines and adding latent nodes.The terrain is reconstructed from the real contour lines of a mountainous area northeast of China with this method.The result shows that the arithmetic has a good efficiency in building network and the terrain surface preserves plenty of terrain propoties and the 3D real sense terrain reconstruction is realized.
【CateGory Index】: TP391.9
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