边缘检测在D-InSAR变形图中提取地表断裂带的应用  

The Application of Edge Detection to Identify the Ruptured Fault Segment in Phase-unwrapped Interferogram

作　　者：佟国功[1] 汤井田[1] 李志伟[1] 任小冲[1] 

机构地区：[1]中南大学信息物理工程学院,湖南长沙410083

出　　处：《四川测绘》2008年第2期54-58,共5页Surveying and Mapping of Sichuan

基　　金：国家自然科学基金(40404001);国家863专题项目(2006AA12Z156)资助;空间信息集成与3S工程应用北京市重点实验室(北京大学)开发基金资助(SIIBKL07-1-0)

摘　　要：利用Doris软件对伊朗Bam地震ENVISAT图像进行处理,得到InSAR差分干涉图并对InSAR差分干涉图进行了相位解缠;然后用几种边缘检测算法对解缠后的差分图进行边缘检测以提取地面断裂带的位置,最后对这几种边缘检测算法的检测结果进行了评价。This paper describes the application of edge detection to identify the ruptured fault segment in phase-unwrapped interferogram. It first uses the Doris soft and Envisat SAR images to generate the differential SAR interferogram over Bam city of Iran, followed by the phase unwrapping of the differential interferogram. Then, this paper applied several edge detection techniques to examine the ruptured fault segment in the phase-unwrapped interferogram. Finally, the results are compared and evaluated.

关 键 词：边缘检测 D—InSAR地表断层断裂带提取 Bam地震 

分 类 号：P237[天文地球—摄影测量与遥感]