%0 Journal Article
%T Directional filter for SAR images based on nonsubsampled contourlet transform and immune clonal selection<br>
%A Xiao-Hui Yang
%A Li-Cheng Jiao
%A Deng-Feng Li
%A <br>
%J 国际自动化与计算杂志
%D 2009
%I 
%X A directional filter algorithm for intensity synthetic aperture radar (SAR) image based on nonsubsampled contourlet transform (NSCT) and immune clonal selection (ICS) is presented. The proposed filter mainly focuses on exploiting different features of edges and noises by NSCT. Furthermore, ICS strategy is introduced to optimize threshold parameter and amplify parameter adaptively. Numerical experiments on real SAR images show that there are improvements in both visual effects and objective indexes. This work was supported by National Natural Science Foundation of China (No. 60802061), Natural Science Research Item of the Education Department of Henan Province (No. 2008B510001), and Innovation Scientists and Technicians Troop Construction Projects of Henan Province (No. 084100510012). Xiao-Hui Yang received the B. Sc. and M. Sc. degrees from Henan University, Kaifeng, PRC in 2001 and 2004, respectively, and the Ph. D. degree from Xidian University, Xi’an, PRC in 2007 in automation and control science. She is currently an associate professor at Henan University. Her research interests include optimization design of multiscale geometric analysis and applications to image processing. Li-Cheng Jiao received the B. Sc. degree from Shanghai Jiao Tong University, PRC in 1982, and M. Sc. and Ph.D. degrees from Xi’an Jiaotong University, PRC in 1984 and 1990. He is presently a professor at Xidian University, PRC. His research interests include artificial intelligence, multiscale geometric analysis, and applications to image processing. Deng-Feng Li received the B. Sc. degree from Henan University, PRC in 1984, and M. Sc. degree from Zhejiang University, PRC in 1989, and Ph.D. degree from Chinese Academy of Sciences, PRC in 1999. He is presently a professor at Henan University. His research interests include harmonic analysis, wavelet analysis and its applications.
%K Directional filter
%K nonsubsampled contourlet transform (NSCT)
%K immune clonal selection optimization (ICSO)
%K synthetic aperture radar (SAR)<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7139AD613512F4F05F6D525B914296AA&aid=65F0D46A5D0E238DC5B0B846FF024C96&yid=DE12191FBD62783C&vid=B31275AF3241DB2D&iid=38B194292C032A66&sid=E2E0FBFE4D7EFB94&eid=82722E2B785EBF0D&journal_id=1476-8186&journal_name=国际自动化与计算杂志&referenced_num=0&reference_num=30