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。
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.
出处
《测绘》
2010年第4期168-171,共4页
Surveying and Mapping
关键词
DEM内插
移动曲面拟合
加权平均
DEM interpolation
Moving surface fitting
Distance-weighted
