确定分形无标度区的有效算法(英文)  

EFFICIENT SCHEME FOR DETERMINING FRACTAL SCALELESS RANGE

作　　者：方志军[1] 周源华[1] 邹道文[2] 周军[1] 张正华[1] 

机构地区：[1]上海交通大学图象通信与信息处理研究所,上海200030 [2]江西科技师范学院,江西南昌330013

出　　处：《红外与毫米波学报》2004年第5期321-324,共4页Journal of Infrared and Millimeter Waves

基　　金：TheprojectsupportedbytheNationalNaturalScienceFoundationofChina( 6990 5 0 0 3 )

摘　　要：分形地貌的分维模型能够充分反映地形的统计纹理特征 ,利用分形内插能从低分辨率的卫星或航空照片高程数据获取高分辨率的高程数据 ,达到较理想的建模效果 .而分形模型中无标度区的确定直接影响到分形特征参数的求解和DEM建模质量的好坏 ,常用方法是采用人机交互试验来选取无标度区 ,缺乏客观标准 .本文提出一种自动确定无标度区的方法 ,实验结果表明 ,该方法在DEM自动建模过程中是简洁、有效的 .The terrain model based on fractal character can sufficiently represent the statistical texture features of the terrain. Better model and higher resolution DEM ( Digital Elevation Model) data can be obtained from the lower resolution data by using fractal interpolation. The determination of fractal scaleless range is very important for computing the fractal characteristic parameters and modeling the digital elevation. The traditional method for determining the fractal scaleless range usually adopts the mutual test between people and compute. However, this method tends to be too subjective. Hence, we offer an auto - determining method, which has been proved to be concise, effective and efficient by experimental results.

关 键 词：维模型 有效算法 纹理特征 分形 人机交互 标度 建模 DEM 地貌 地形 

分 类 号：TN911.73[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]