| 几种建立DEM模型插值方法精度的交叉验证 |
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| 引用本文： | 顾春雷,杨漾,朱志春.几种建立DEM模型插值方法精度的交叉验证[J].测绘与空间地理信息,2011,34(5):99-102. |
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| 作者姓名： | 顾春雷 杨漾 朱志春 |
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| 作者单位： | 1. 中国科学技术大学地球和空间科学院,安徽合肥,230026
2. 安徽省地震局,安徽合肥,230031 |
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| 摘 要： | 建立DEM模型时需要对离散的高程点进行空间插值,实现这一目的的插值方法有很多种。文章主要选择了6种常用的插值方法,分别在平原、丘陵和高山几种不同复杂程度的环境下对其插值的精度使用交叉验证方法进行评估。结果表明,同样的插值方法对不同复杂程度的地形效果是不一致的,多种插值方法中以克里金插值方法的插值适用性最强,精度最高。
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| 关 键 词： | DEM模型 克里金插值 交叉验证 均方根预测误差 |
Accuracy Cross-validation of Several Interpolation Methods of DEM |
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| GU Chun-lei,YANG Yang,ZHU Zhi-chun.Accuracy Cross-validation of Several Interpolation Methods of DEM[J].Geomatics & Spatial Information Technology,2011,34(5):99-102. |
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| Authors: | GU Chun-lei YANG Yang ZHU Zhi-chun |
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| Institution: | GU Chun-lei1,2,YANG Yang1,3,ZHU Zhi-chun2 (1.College of Earth and Space Science,University of Science and Technology of China,Hefei 230026,China,2.Earthquake Administration of Anhui Province,Hefei 230031,3.Earthquake Administration of Hainan Province,Haikou 570203,China) |
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| Abstract: | There are many methods can be used for spatial interpolating of discrete elevation points when build DEM model.This paper chose six kinds of interpolating methods applied in plain,hilly and mountain region,and applied cross-validation method to evaluate the interpolating accuracy.The result shows,the effectiveness of same interpolating methods are different at different complex degree of terrain,the precision interpolation of Kriging interpolation method has strongest applicability and highest accuracy of t... |
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| Keywords: | DEM model Kriging interpolation method cross-validation Root-Mean-Square error |
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