| 一种面向大场景3维显示的地形建模方法 |
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| 引用本文： | 涂震飚,刘永才,苏康,田金文.一种面向大场景3维显示的地形建模方法[J].测绘学报,2004,33(1):71-76. |
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| 作者姓名： | 涂震飚 刘永才 苏康 田金文 |
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| 作者单位： | 华中科技大学图像所,图像识别与人工智能教育部重点实验室,湖北,武汉,430074;航天科工集团第三研究院,北京,100074;航天科工集团第三研究院,北京,100074;华中科技大学图像所,图像识别与人工智能教育部重点实验室,湖北,武汉,430074 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 提出一种面向大范围3维场景显示的地形建模方法.该方法基于数字高程模型DEM(Digital Elevation Model)固有的栅格特点,将大范围场景划分成小的子块.根据应用对这些子块的精度要求,采用不同地形建模方法构建相应的细节层次LoD( Level of Detail)模型.最终,通过拼接这些子块模型完成对整个大场景的多分辨率建模,试验结果表明,该算法具有较好的实用性和有效性.
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| 关 键 词： | 地形建模 格网简化 3维可视化 |
| 文章编号： | 1001-1595(2004)01-0071-06 |
A Modeling Method for Large Scale Terrain Oriented 3D Display |
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| TU Zhen-biao.A Modeling Method for Large Scale Terrain Oriented 3D Display[J].Acta Geodaetica et Cartographica Sinica,2004,33(1):71-76. |
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| Authors: | TU Zhen-biao |
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| Institution: | TU Zhen-biao~ |
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| Abstract: | A modeling method for large scale terrain oriented 3D display is presented. Based on raster characteristics of DEM and image data, the large scale terrain is plotted into small sub-plots by this method,and the LoD terrain model as well as texture pyramid of these sub-plots are constructed separately, corresponding to practical appeal of the application. Ultimately, the entire multiresolution model of large scale terrain can be constructed by patch up these sub-model, furthermore, the real-time cruise of large scale 3D terrain can be realized. |
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| Keywords: | terrain modeling mesh simplification 3D visualization |
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