| 基于自适应四叉树的地形简化 |
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| 引用本文： | 官学文,马耀昌.基于自适应四叉树的地形简化[J].地理空间信息,2008,6(1):65-68. |
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| 作者姓名： | 官学文 马耀昌 |
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| 作者单位： | 长江水利委员会,长江上游水文水资源勘测局,重庆,400014 |
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| 摘 要： | 针对当前地形三维可视化技术的研究现状，在吸取计算机图形学、虚拟现实、地理信息学、现代数学的先进理论和技术成果的基础上，根据地形表面平坦程度不同对原始地形模型预简化，对表面较平坦的区域不再分层，将原始地形模型的完全四叉树结构改变成自适应四叉树结构，从而生成自适应四叉树结构的地形模型，并采用VC^＋＋结合OpenGL加以实现。
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| 关 键 词： | 地形模型 自适应四又树 模型简化 OpenGL |
| 文章编号： | 1672-4623（2008）01-0065-03 |
| 收稿时间： | 2007-11-26 |
| 修稿时间： | 2007年11月26 |
Method for Terrain Model Simplification Based on Adaptive Quadtree |
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| GUAN Xuewen,MA Yaochang.Method for Terrain Model Simplification Based on Adaptive Quadtree[J].Geospatial Information,2008,6(1):65-68. |
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| Authors: | GUAN Xuewen MA Yaochang |
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| Institution: | (Bureau of Hvdrology and Water Resources Survey of the Upper Yangtze River, Chongqing 400014, China) |
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| Abstract: | The paper base on the present situation of three-dimension terrain visualization technology research, on absorbing the advanced theories and the technique result about computer graphics, virtual reality, geographical information, modern mathematic etc. This study is about complicated terrain model simplification, simplified the original geography model in advance according to flatness degree of the topography. For more flat district, surface is no longer layering. Changed the original geography models complete quadtree structure into adaptive quadtree structure. Thus the geography model of the adaptive quadtree structure was built. While, VC++ combine OpenGL were used to achieve them. |
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| Keywords: | terrain model adaptive quadtree model simplification OpenGL |
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