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以等高线为特征约束的Delaunay TIN的构建
Construction of CD-TIN with Characteristic Constraints of Contour Lines
【摘要】 首先回顾了构建D-TIN常用的三种算法,然后采用改进了的凸包算法建立等高线离散数据点的无约束D-TIN,提出了基于影响域对角线交换的局部调整算法,运用该算法将等高线作为特征约束嵌入到D-TIN中,建立以等高线为特征约束的CD-TIN。
【Abstract】 The paper reviewed three common algorithm of the D-TIN construction,and then adopted improved convex algorithm to construct non-constrainted D-TIN,put forward Impacted-regiondiagonals-change local adjusting algorithm.The new algorithm was used to embed contour lines into D-TIN as constrained segments and ultimately constructed CD-TIN.
- 【文献出处】 地理空间信息 ,Geospatial Information , 编辑部邮箱 ,2009年06期
- 【分类号】TP391.41
- 【被引频次】3
- 【下载频次】236