物理学报2012，Vol.61Issue(11)：565-569,5.
一种用于合成孔径雷达图像相干斑抑制的双边滤波参数配置新方法
A novel method to configure the parameters of the bilateral filtering for synthetic aperture radar images speckle reduction
摘要
Abstract
Bilateral filtering can effectively smooth SAR images with the edges preserved,but it is difficult to optimally configure the parameters of bilateral filtering.Traditional method is based on an optimal trade-off hypothesis according to the despeckling estimation indexes,including the equivalent number of looks（ENL） and edge preserving index（EPI）.However,the variance of gray value similarity obtained by traditional method has large error,and to improve accuracy,the computing time is increased linearly.In this paper, we present a novel method to configure the parameters of bilateral filtering based on the hypothesis and the monotone properties of the ENL and EPI curves.Experimental results show that the accuracy of variance of gray value similarity is increased by one order of magnitude in the case of almost the same computing time;the computing time is reduced by one order of magnitude for the same accuracy of variance of gray value similarity.关键词
双边滤波/合成孔径雷达/相干斑抑制/参数配置Key words
bilateral filtering/synthetic aperture radar/speckle reduction/parameters configuration分类
信息技术与安全科学引用本文复制引用
李金才,黄思训,彭宇行,张卫民..一种用于合成孔径雷达图像相干斑抑制的双边滤波参数配置新方法[J].物理学报,2012,61(11):565-569,5.基金项目
国家自然科学基金（批准号：41175025,60970033,41105012）资助的课题. （）
