| 利用坐标反算的投影网格算法 |
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| 引用本文： | 陈引川,王洪伟,张立朝.利用坐标反算的投影网格算法[J].测绘学院学报,2010(2). |
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| 作者姓名： | 陈引川 王洪伟 张立朝 |
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| 作者单位： | 信息工程大学测绘学院; |
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| 基金项目： | 2007年信息工程大学博士研究生学位论文创新基金资助 |
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| 摘 要： | 投影网格算法从投影后的网格入手,通过反算获取投影前的位置,进而完成3维地形的绘制。分析了传统投影网格算法存在的缺陷,提出了改进的投影网格算法,并对改进后的算法进行了测试和分析。认为投影网格算法具有简单直观、易构建高分辨率地形的优点,最后指出了需要进一步研究的方向。
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| 关 键 词： | 投影网格 坐标反算 视截体 3维场景 算法 |
On Projected Grid Algorithm Droved by Coordinate Inverse Calculation |
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| CHEN Yin-chuan,WANG Hong-wei,ZHANG Li-chao.On Projected Grid Algorithm Droved by Coordinate Inverse Calculation[J].Journal of Institute of Surveying and Mapping,2010(2). |
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| Authors: | CHEN Yin-chuan WANG Hong-wei ZHANG Li-chao |
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| Institution: | Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China |
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| Abstract: | The project grid algorithm gets the coordinate before projected through analyzing the grid.The shortages of the current project grid algorithm was analyzed,and the new project grid algorithm was put forward.And then the new project grid algorithm was tested and analyzed.The result indicated that the algorithm was very simple and was able to bulid high resolution terrain easily.Finally,the aspects needed to research further were pointed out. |
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| Keywords: | projected grid coordinate inverse calculation view cutting body 3D scene display algorithm |
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