| 一种视相关多分辨率模型及其在地形绘制中的应用 |
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| 引用本文： | 马东洋,谭兵,等.一种视相关多分辨率模型及其在地形绘制中的应用[J].测绘学院学报,2002,19(1):28-31. |
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| 作者姓名： | 马东洋 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
(马东洋，谭兵)，信息工程大学测绘学院 河南郑州450052(徐青) |
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| 摘 要： | 介绍了地形模型的多分辨率表示方法，提出了一种基于四叉树的多分辨率地形模型。在该模型中，采用了一种新的与视点相依赖的动态误差度量准则，对四叉树地形模型的拼接缝消除算法进行了改进，实验结果表明该模型能实现地形场景的实时游览，提高地形场景的绘制效率。
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| 关 键 词： | 数字高程模型 LOD 多分辨率模型 视相关 地形绘制 可视化 |
A View-Dependent Multiresolution Model and Its Application to Terrain Rendering |
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| MA Dong yang,TAN Bing,XU Qing.A View-Dependent Multiresolution Model and Its Application to Terrain Rendering[J].Journal of Institute of Surveying and Mapping,2002,19(1):28-31. |
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| Authors: | MA Dong yang TAN Bing XU Qing |
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| Abstract: | In this paper, the multi resolution representations of terrain model are introduced and a quadtree based multi resolution terrain model is proposed. In this model, a new rule for evaluating view dependent dynamic error is adopted and the method of repairing the cracks intrinsically caused by quadtree data structure is also improved. The experiments show that and the real time dynamic browsing is achieved ,thus the performance of terrain rendering is improved greatly. |
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| Keywords: | DEM level of detail multi resolution model view dependent |
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