| 顾及特征线和三角形形态最优的TIN三角网构建算法 |
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| 引用本文： | 李长春,岳建伟,雷添杰,王宝山.顾及特征线和三角形形态最优的TIN三角网构建算法[J].测绘与空间地理信息,2010,33(6). |
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| 作者姓名： | 李长春 岳建伟 雷添杰 王宝山 |
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| 作者单位： | 北京师范大学资源学院,北京,100875;河南理工大学,测绘与国土信息工程学院,河南,焦作,454000;北京师范大学资源学院,北京,100875;河南理工大学,测绘与国土信息工程学院,河南,焦作,454000 |
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| 基金项目： | 十一五国家科技支撑计划课题 |
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| 摘 要： | 传统三角形剖分方法只考虑三角网的形态最优,忽略了地形特征线的影响,导致构建的地形模型不能真实反映地形特征。文章提出既顾及特征线又满足三角形形态最优的TIN模型的构建方法。在研究了有关三角形形态理论的基础上,设计了数据结构,对如何利用该方法进行三角形剖分做了具体研究。实例证明,利用该方法进行三角形剖分,构建的TIN三角网模型既能满足三角形形态最优,又能避免特征线穿越三角形,能够真实反映地形特征。该三角形剖分方法对于地形较复杂区域的TIN模型构建具有很好的适用性。
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| 关 键 词： | 最优形态 特征线 三角形剖分 TIN |
Algorithm of Establishing TIN Triangle Net Considering both Linear Constraints & Optimized Shape |
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| LI Chang-chun,YUE Jian-wei,LEI Tian-jie,WANG Bao-shan.Algorithm of Establishing TIN Triangle Net Considering both Linear Constraints & Optimized Shape[J].Geomatics & Spatial Information Technology,2010,33(6). |
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| Authors: | LI Chang-chun YUE Jian-wei LEI Tian-jie WANG Bao-shan |
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| Institution: | LI Chang-chun1,2,YUE Jian-wei1,LEI Tian-jie1,WANG Bao-shan2 (1.The College of Resource Science & Technology,Beijing Normal University,Beijing 100875,China,The School of Surveying & Land Information Engineering,Henan Polytechnic University,Jiaozuo 454000,China) |
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| Abstract: | The traditional method of TIN triangulation only considered the optimized shape but the effect of linear constraints was ignored,which causes the TIN model could not reflect the original feature of terrain.This paper proposed a method of considering both linear constraints & optimized shape.Based on the research of the triangle shape theory,we designed a data structure and conducted detailed research on how to establish TIN.Example shows the method could not only meet the need of optimized shape,but also pr... |
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| Keywords: | optimized shape linear constrains triangulation TIN |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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