| 基于离散点数据构建TIN的方法 |
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| 引用本文： | 刘正纲,武文波. 基于离散点数据构建TIN的方法[J]. 辽宁工程技术大学学报(自然科学版), 2005, 24(Z2): 63-65 |
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| 作者姓名： | 刘正纲 武文波 |
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| 作者单位： | 1. 辽宁工程技术大学,测量工程系,辽宁,阜新,123000
2. 辽宁工程技术大学,科技产业处,辽宁,阜新,123000 |
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| 摘 要： | 为了能直接利用野外采集的数据生成DEM模型,反映地表特征.采用离散的点数据作为数据源,选择三角网生长算法来建立Delaunay三角网,寻找待扩展点时,利用叉积原理,始终向扩展边的左侧扩展;同时用边链表结构检测待扩展边是否被扩展过,用链表是否为空作为判断条件来检测是否所有的点都已扩展.采用VC++6.0开发环境,建立的TIN生成系效率更高,可视性更好.
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| 关 键 词： | 三角网 数字高程模型 扩展 链表 |
| 文章编号： | 1008-0562(2005)增刊-0063-03 |
| 修稿时间： | 2005-09-28 |
Method of building TIN based on disperse point data |
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| LIU Zheng-gang,WU Wen-bo. Method of building TIN based on disperse point data[J]. Journal of Liaoning Technical University (Natural Science Edition), 2005, 24(Z2): 63-65 |
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| Authors: | LIU Zheng-gang WU Wen-bo |
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| Abstract: | In order to use data collected in the fieed air directly to create DEM and reflect ground surface characteristic,disperse point data is regarded as the data source,and triangle net-growth algorithm is chosen to establish Delaunay triangle net.When looking for the points to be expanded,make use of the principle of fork accumulation and always expand to the left side of expanding side;Using a side-list construction at the same time to examine that whether the side to be expanded has been expanded or not.Use the condition that whether the list is empty to examine that whether all points are expanded or not.Adopt VC++6.0 as the development environment and make TIN-inborn system more effective and more visible. |
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| Keywords: | triangle net digital elevation model expands list |
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