New edge detection method for high-resolution SAR images  

作　　者：Chang Yulin Zhou Zhimin Chang Wenge Jin Tian 

机构地区：[1]School of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2006年第2期316-320,共5页系统工程与电子技术（英文版）

摘　　要：A new edge detection method combining the scanning window central edge （SWCE） detector and an improved active contour model is proposed. The method first emploies the SWCE detector based on the difference of area pixel value means to perform an optimal edge detection, and then proposes an improved active contour model with modified energy functions to refine the location of the edges. The initial nodes of the improved active contour model are automatically found from the vectorised results of the SWCE detector. Tests on simulated speckled images and real airborne SAR images show that the combined method can benefit from the advantages of the both techniques and get satisfactory edge detection and localization abilities at the same time.A new edge detection method combining the scanning window central edge （SWCE） detector and an improved active contour model is proposed. The method first emploies the SWCE detector based on the difference of area pixel value means to perform an optimal edge detection, and then proposes an improved active contour model with modified energy functions to refine the location of the edges. The initial nodes of the improved active contour model are automatically found from the vectorised results of the SWCE detector. Tests on simulated speckled images and real airborne SAR images show that the combined method can benefit from the advantages of the both techniques and get satisfactory edge detection and localization abilities at the same time.

关 键 词：index terms -SAR edge detection SWCE active contour model. 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]