| 电子地图显示中点状要素LoD模型的建立 |
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| 引用本文： | 贾奋励,宋国民.电子地图显示中点状要素LoD模型的建立[J].测绘学院学报,2002,19(1):62-64. |
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| 作者姓名： | 贾奋励 宋国民 |
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| 作者单位： | 信息工程大学测绘学院 河南郑州450052
(贾奋励)，信息工程大学测绘学院 河南郑州450052(宋国民) |
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| 摘 要： | 将计算机3维模型简化中的LoD技术引入电子地图显示中，通过构建Delaunay三角网和Voronoi图，提出了一种建立点状要素显示LoD模型的算法，基本上解决了电子地图显示时出现的重叠，压盖等现象。
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| 关 键 词： | 电子地图 LoD技术 Delaunay三角网 Voronoi图 计算机 重叠 压盖 |
The Foundation of LoD Model of Point Feature in Electronic Map |
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| JIA Fen li,SONG Guo min.The Foundation of LoD Model of Point Feature in Electronic Map[J].Journal of Institute of Surveying and Mapping,2002,19(1):62-64. |
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| Authors: | JIA Fen li SONG Guo min |
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| Abstract: | When the capacity of data is very large, the display of vector electronic map will usually overlap and overlay. The definition and the beauty of electronic map are disturbed,and the users are difficult to read maps. This paper introduces the LoD technology of computer 3D scene into the displaying of electronic map, uses Delaunay triangulation and Voronoi diagram, discusses the foundation of the LoD model of point feature independent of data. |
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| Keywords: | electronic map LoD technology delaunay triangulation Voronoi diagram |
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