AN EVIDENT SIDELOBE CONTROL METHOD BASED ON NSCT FOR SHIP TARGET IN SAR IMAGES

被引：0
|
作者：
Li Xueying Yin Dong Zhang Rong Wang KuiSchool of Information Science TechnologyUniversity of Science and Technology of ChinaHefei China [230027 ]
机构：
来源：
JournalofElectronics(China) | 2011年 / 28(Z1)卷 / China期
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暂无
中图分类号：
TN957.52 [数据、图像处理及录取];
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摘要：
Evident sidelobe on faint ship target seriously affects the accuracy of the target segmen-tation in Synthetic Aperture Radar(SAR) images.To avoid this problem,a novel sidelobe control method based on NonSubsampled Contourlet Transform(NSCT) for ship targets in SAR images is presented in this paper.This method enhances the SAR images in NSCT domain based on target azimuth estimation and then inhibits the sidelobe directionally in NSCT high-pass frequency subbands.Experimental results on RADARSAT-2 images demonstrate that the proposed method can not only reduce the strong sidelobes effectively,but also enhance the intensity of the objects successfully.Therefore,it gives a good segmentation result on the dark ship images with strong sidelobe,and en-hances the detection rate on these targets.
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页码：419 / 426
页数：8
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