| 三维地形仿真中TIN数字高程模型的简化 |
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| 引用本文： | 张文明,张俊峰,董晶晶,纪振瑞.三维地形仿真中TIN数字高程模型的简化[J].北京测绘,2010(3):14-17. |
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| 作者姓名： | 张文明 张俊峰 董晶晶 纪振瑞 |
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| 作者单位： | 总参测绘信息中心,北京,100088;65015,部队,辽宁,大连,116023;61081,部队,北京,100094 |
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| 摘 要： | 研究了三维地形仿真中不规则三角网(TIN)的简化算法,提出了通过删除简化地形描述误差小于阈值的点,并对局部三角网进行重构进行简化的算法。该算法能较好地保留地形特征点,使简化后的地形与原地形保持最大的相似性。实验证明,本算法具有很好的简化效果和较高的效率。
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| 关 键 词： | 数字高程模型 地形简化 TIN Delaunay三角剖分 |
Terrain Simplification Based on TIN in 3d Terrain Simulation |
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| ZHANG Wen-ming,ZHANG Jun-feng,DONG Jing-jing,JI Zhen-rui.Terrain Simplification Based on TIN in 3d Terrain Simulation[J].Beijing Surveying and Mapping,2010(3):14-17. |
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| Authors: | ZHANG Wen-ming ZHANG Jun-feng DONG Jing-jing JI Zhen-rui |
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| Institution: | ZHANG Wen-ming1,ZHANG Jun-feng2,DONG Jing-jing3,JI Zhen-rui2(1.General Staff Information Center Of Surveying , Mapping,Beijing 100088 China,2.65015 Troops,Dalian 116023 China,3.61081 Troops,Beijing 100094 China) |
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| Abstract: | The Paper introduces a method about Terrain Simplification,through delete the point whose EP behand a value and Delaunay Triangulation to tin grid.Through the experiment,it is proved that the algorithm can be used to simplify any types of terrain model.And the algorithm has a high efficiency and very good result. |
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| Keywords: | TIN |
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