分形地形复杂度研究  

Research the Terrain Complexity of Fractal Geometry

作　　者：朱绍攀[1] 张书毕[1] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《地理空间信息》2011年第3期116-119,190,共4页Geospatial Information

基　　金：中央高校基本科研业务费专项资金资助项目(2010QNA20)

摘　　要：利用VC++6.0与OpenGL开发了1个地形分析程序,分别实现了2种地形复杂度描述方法。基于分形几何学的思想,对栅格DEM进行地形分析,得出的实验地区地表分维值,比传统地表粗糙度分析方法得出的地表粗糙度值能更好地表现地形变化的连续性和空间相关性。实验表明,地表分维值能够很好地反映地形变化特征,可作为栅格DEM地形复杂度的一个描述因子。By VC++6.0 and OpenGL a terrain analysis program was developed to respectively achieve the two methods described in the terrain complexity.The experiment showed that using the idea of fractal geometry could analyze the topography of the DEM grid and get the experimental values of surface fractal dimension.It was better than the surface roughness values obtained by the traditional surface roughness analysis method.It could show performance of the terrain continuity and spatial correlation.This experiment showed that the surface fractal dimension could reflect the characteristics of topography and could be used as a description of the terrain complexity factor for grid DEM.

关 键 词：DEM 地形分析 复杂度 分形几何 

分 类 号：P208[天文地球—地图制图学与地理信息工程]