摘要
约束边嵌入是解决D-三角网转变为CD-三角网的一种非常有效的方法,而CD-三角网才能真实地虚拟地形地貌。该文研究了约束边嵌入D-三角网的问题,介绍了约束边嵌入算法的一些基本概念,分析了现存算法的特点,提出了改进的约束边嵌入算法——"插入-交换"算法。该算法能有效地处理各种特殊情况,程序实现简单,符合工程需求。
This paper focuses on the problem of inserting constrained edge into D-triangulation. It is a very effective method of changing D-triangulation into CD-triangulation that constrained edge is inserted into D-triangulation, and only CD-triangulation can present real terrain and relief. It introduces some basic conceptions about the algorithm of inserting constrained edge, analyses present algorithms' characteristics and presents a better algorithm of inserting constrained edge "inserting-swapping" algorithm. The algorithm can effectively deal with all kinds of instances, and can be implemented by programs easily, and can accord with requirements of the project.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第16期56-58,共3页
Computer Engineering
基金
国家"863"计划基金资助项目(2002AA135160)
作者简介
陈学工(1965-),男,副教授、博士,主研方向:地理信息系统等; E-mail:cn1233@263net
黄晶晶,硕士研究生