| 基于移动曲面拟合算法和加权平均算法的DEM内插算法改进 |
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| 引用本文： | 李胤,杨武年,杨容浩,曾涛.基于移动曲面拟合算法和加权平均算法的DEM内插算法改进[J].四川测绘,2010,33(4):168-171. |
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| 作者姓名： | 李胤 杨武年 杨容浩 曾涛 |
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| 作者单位： | 成都理工大学遥感与GIS研究所,四川成都,610059 |
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| 摘 要： | 分析了移动曲面拟合与加权平均算法的特点，提出了移动曲面拟合法与加权平均法相结合的方法，使它们能够相互取长补短，并在复杂的曲面拟合运算前对搜索到的参考点进行判断和预处理。通过从一组原始数据中随机提取的部分数据对不同内插方法进行测试，得出了各内插算法的精度，结果表明本文提出的内插算法有一定的优越性。
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| 关 键 词： | DEM内插 移动曲面拟合 加权平均 |
Improvement of DEM Interpolation Algorithms Based on Moving Surface Fitting and Distance-weighted |
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| LI Yin,YANG Wu-nian,YANG Rong-hao,ZENG Tao.Improvement of DEM Interpolation Algorithms Based on Moving Surface Fitting and Distance-weighted[J].Surveying and Mapping of Sichuan,2010,33(4):168-171. |
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| Authors: | LI Yin YANG Wu-nian YANG Rong-hao ZENG Tao |
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| Institution: | (RS ＆ GIS Institute of Chengdu University of Technology, Chengdu 610059,China) |
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| Abstract: | A method was provided in this article which combined moving surface fitting with distance-weighted based on analyzing their characteristic. It could learn from other＇s strong points to offset one＇s weakness. For reference points, a judging and pre-processing has been done before complex surface fitting.Testing different interpolation methods by some data that randomly extracted from a set of raw data, we could get the order of different interpolation methods＇ accuracy, the results show that the proposed interpolation method has sme advantages. |
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| Keywords: | DEM interpolation Moving surface fitting Distance-weighted |
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