摘要
本文首先分析了基于反距离加权法构建DEM模型的算法,进而研究用欧几里得距离、曼哈顿距离和切比雪夫距离这三种常见的距离测度对地形进行构建DEM,提出了分维数距离测度来生成DEM,最后比较各种距离测度下DEM模型的精度,结论是欧式距离下构建DEM精度最高,分维数情况下,需要试验来确定最佳拟合。
This paper analyzes algorithm of building DEM applied the inverse distance weighted interpolation firstly.By three common distance measuring method named the Euclidean distance,Manhattan distance and Chebyshev distance used to build the DEM respectively,a fractal dimension distance measuring method for generating DEM was proposed.Comparing the accuracy of the DEM among different distance measuring method,it can be concluded that using the Euclidean distance to build DEM has the highest accuracy and in fractal dimension case,experiment is needed to determine the best fit.
出处
《福建建设科技》
2012年第1期73-75,共3页
Fujian Construction Science & Technology
关键词
DEM
距离测度
分维数
插值算法
DEM
different distance measure
fractal dimension
interpolation algorithm
