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《Science of Surveying and Mapping》 2019-01
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Integration of Poyang lake land and sea terrain data based on constrained edge Delaunay triangulation network

XIAO Bing;WANG Liang;XU Shenghua;LIANG Yong;LIU Xiao;School of Information Science and Engineering,Shandong Agricultural University;Chinese Academy of Surveying and Mapping;  
In order to improve the comprehensive development of water management,realize the integration of land and water terrain integration,this paper is based on the data integration of the original DEM grid,proposes the use of land and sea and terrain data integration method based on edge constraint Delaunay triangulation,namely the iterative method is used to embed the constraint lines,so as to construct a constrained Delaunay triangulation.This paper takes Poyang lake as the study area,DEM grid data and Poyang lake shoreline vector data are used as data source,creating a Delaunay triangulation based on the shoreline using constrained Delaunay triangulation method,and realize the seamless integration of terrain.The experimental results show that,compared with the use of DEM grid data registration method,it is concluded that the Delaunay triangulation constructed under the condition of shoreline constraint can better express the integration of topographic data at the edge,and the smoothing effect is better.
【Fund】: 中国测绘科学研究院基本科研业务费项目(7771718);; 公益性行业科研专项(201512010)
【CateGory Index】: P208
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