| 基于等高线的三角网快速构建与处理 |
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| 引用本文： | 刘合辉,罗勇军.基于等高线的三角网快速构建与处理[J].测绘工程,2009,18(2):55-58. |
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| 作者姓名： | 刘合辉 罗勇军 |
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| 作者单位： | 1. 信息工程大学,测绘学院,河南,郑州,450052;75719部队,湖北,武汉,430074
2. 信息工程大学,测绘学院,河南,郑州,450052 |
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| 摘 要： | 采用一种利用等高线数据，快速处理和优化TIN的方法。该方法首先将等高线离散成数据点集；然后利用凸壳技术快速地进行三角形构网；再利用TIN的拓扑结构快速内插入等高线，形成约束TIN；最后利用三角形与特征边的关系及TIN的拓扑结构，从而快速消除平坦三角形，提高TIN的质量。
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| 关 键 词： | 不规则三角网 凸壳技术 约束不规则三角网 平坦三角形处理 |
Speedy constructing and processing TIN based on contours |
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| LIU He-hui,LUO Yong-jun.Speedy constructing and processing TIN based on contours[J].Engineering of Surveying and Mapping,2009,18(2):55-58. |
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| Authors: | LIU He-hui LUO Yong-jun |
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| Institution: | LIU He-hui, LUO Yong-jun (1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052,China; 2. 75719 Troops, Wu han 430052, China) |
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| Abstract: | The paper improves the measure of constructing and processing TIN based on contours. Firstly the contours are scattered into point sets, and TIN is rapidly constructed using convex shell technology. Then, the contours are speedly inserted into TIN according to its topological structures. Finally applying the topological structures between triangles and feature sides, flat triangles are processed to enchace the quality of TIN. |
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| Keywords: | Triangle Irregular Network （TIN） convex shell technology constrained Tin flat triangle pro cessing |
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