| 基于3维地形图的空间分析算法 |
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| 引用本文： | 周杨,谭兵,等.基于3维地形图的空间分析算法[J].测绘学院学报,2001,18(1):39-43. |
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| 作者姓名： | 周杨 谭兵 |
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| 作者单位： | 信息工程大学测绘学院!河南郑州450052 |
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| 摘 要： | 讨论了基于3维地形图的空间分析算法，利用正确与反解两种方法，建立2维图形目标点与3维DEM网格点之间的投影变换关系，从而获取3维地形图上目标点的3维坐标，进而实现几种基本的空间分析算法。
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| 关 键 词： | OpenGL 数字高程模型 投影变换 空间分析 三维地形图 三维地形透视模型 |
A Spatial Analysis Algorithm Based on 3D Topographic Map |
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| ZHOU Yang,TAN Bing,XU Qin.A Spatial Analysis Algorithm Based on 3D Topographic Map[J].Journal of Institute of Surveying and Mapping,2001,18(1):39-43. |
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| Authors: | ZHOU Yang TAN Bing XU Qin |
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| Abstract: | In this paper,Spatial analysis algorithm is discussed based on three dimension topographic map.using positive dispel and counter dispel means, we establish projection transformation connection between the two dimension graphics target dot and the three dimension DEM grid dot. So we can obtain target dot's space coordinate in three dimension relief map and achieve several basic interspace analyzing arithmetic. |
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| Keywords: | OpenGL digital elevation model projection transform space analyzing |
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