基于脊波和Cycle Spinning的SAR图像相干斑抑制  

SAR Speckle Reduction Based on Ridgelet and Cycle Spinning

作　　者：杨晓慧[1] 焦李成[1] 李登峰[2] 

机构地区：[1]西安电子科技大学智能信息处理研究所,西安710071 [2]河南大学数学与信息科学学院,开封475001

出　　处：《工程数学学报》2007年第5期819-824,共6页Chinese Journal of Engineering Mathematics

基　　金：973项目(2001CB309403);国家自然科学基金(60272042;60472084).

摘　　要：本文导出脊波的一个性质,并基于这种具有特殊性质的脊波,提出一种SAR图像相干斑抑制算法。在脊波域中引入Cycle Spinning,以解决基函数所缺失的平移不变性。实验结果表明:这种脊波比小波更适于SAR图像滤波,尤其适于含直线奇异性的图像。A property of ridgelet is first proved. An algorithm of SAR image speckle reduction is then proposed by basing on the proved special properties. Consequently, cycle spinning is introduced in ridgelet domain for satisfying the shift invariance. Experimental results show that the ridgelets are more effective than that of the corresponding wavelets on speckle reduction, especially for images with straight line singularities.

关 键 词：标准正交脊波 脊波紧框架 CYCLE SPINNING SAR 相干斑 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]