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《Geomatics & Spatial Information Technology》 2007-01
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An Improved Algorithm for Creation of Delaunay Triangulation

XU Dao-zhu,LIU Hai-yan(Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China)  
This paper studied incremental insertion algorithm,which is one of the methods of Delaunay triangulation,analyzed the key steps which affect the efficiency of algorithm mostly of all the steps of the algorithm.The point set is organized by constructing grid index,together with recompose the insertion order of the points and the algorithm for fast location of the triangle that contain the given point,the efficiency of algorithm is greatly improved.Tested by actual map data,it shows that the improved algorithm could improve the efficiency so much as four to six times.
【Fund】: 国家自然科学基金(40401052)资助
【CateGory Index】: P221.1
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