| 基于Coons曲面的格网DEM传递误差 |
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| 引用本文： | 王耀革,高际宇,朱长青.基于Coons曲面的格网DEM传递误差[J].测绘科学技术学报,2007,24(5):361-363. |
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| 作者姓名： | 王耀革 高际宇 朱长青 |
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| 作者单位： | 信息工程大学,测绘学院,河南,郑州,450052;信息工程大学,理学院,河南,郑州,450001;郑州师范高等专科学校,河南,郑州,450044;信息工程大学,测绘学院,河南,郑州,450052 |
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| 摘 要： | 构造了基于边界曲线的Coons曲面DEM;研究了Coons曲面DEM的传递误差,推导出不同边界曲线构成的Coons曲面DEM模型的传递误差;得到了Coons曲面DEM的传递误差大于双线性DEM的传递误差的结论,并分析了传递误差与格网点数目的关系.
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| 关 键 词： | DEM Coons曲面 传递误差 |
| 文章编号： | 1673-6338（2007）05-0361-03 |
| 收稿时间： | 2007-03-11 |
| 修稿时间： | 2007-05-28 |
The Propagation Error of Grid DEM Based on Coons Surface |
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| WANG Yao-ge,GAO Ji-yu,ZHU Chang-qing.The Propagation Error of Grid DEM Based on Coons Surface[J].Journal of Zhengzhou Institute of Surveying and Mapping,2007,24(5):361-363. |
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| Authors: | WANG Yao-ge GAO Ji-yu ZHU Chang-qing |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineer University, Zhengzhou 450052 China; 2. Institute of Science, Information Engineering University, Zhengzhou 450001, China; 3. Zhengzhou Academic Normal School, Zhengzhou 450044, China |
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| Abstract: | In this paper, Coons DEM model was constructed based on the interpolated grid boundary curves. The propagation error formula showed that Coons DEM model based on different boundary curves had different propagation errors, and the propagation error from Coons DEM model was bigger than the linear polynomial DEM model. The paper analyzed the relation of propagation error and grid points. |
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| Keywords: | DEM Coons surface propagation error |
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