| 地形RSG模型的动态构网算法 |
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| 引用本文： | 陈刚,夏青,万刚.地形RSG模型的动态构网算法[J].测绘学报,2002,31(1):44-48. |
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| 作者姓名： | 陈刚 夏青 万刚 |
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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： | 论述了一种基于规则格网地形模型的动态构网算法。通过定义模型中顶点间的约束关系以及顶点误差的继承方法，利用四叉树构建出顶点的层次结构，有效解决了不同分辨率网络间接边的裂缝问题，实现在模型误差控制下的多分辨网络的实时正确构网。实验证明，该方法对于实时控制地形模型的细节层次，增强地形模型的绘制效率是非常有效的。
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| 关 键 词： | 数字高程模型 虚拟地形 实时渲染 动态构网 细节分层 |
| 文章编号： | 1001-1595(2002)01-0044-05 |
An Algorithm of Dynamic Triangulation for the RSG Model of Terrain |
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| CHEN Gang,XIA Qing,WAN Gang.An Algorithm of Dynamic Triangulation for the RSG Model of Terrain[J].Acta Geodaetica et Cartographica Sinica,2002,31(1):44-48. |
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| Authors: | CHEN Gang XIA Qing WAN Gang |
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| Abstract: | This paper discusses an algorithm of dynamic triangulation for RSG model of terrain. With defining the relationships between the points and the inheriting method of their errors, the problem of cracks between blocks of different resolution in the quad-structure are resolved efficiently, and the dynamic triangulation controlled by giving error is also come true. The experiments show that this algorithm is very good for the real-time LOD controlling of terrain and also for the real-time rendering. |
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| Keywords: | Digital Elevation Model virtual terrain real-time rendering dynamic triangulation level of detail |
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