Algorithm Research of Filtering for SAR Images Based on Edges-Preserving

GAO Shan; MA Yan-hui

doi:10.3788/YJYXS20132802.0290

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Algorithm Research of Filtering for SAR Images Based on Edges-Preserving

Imaging Technology & Image Processing | 更新时间：2020-08-12

- Algorithm Research of Filtering for SAR Images Based on Edges-Preserving
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 2, Pages: 290-294(2013)
- 作者机构：
  
  1. 枣庄学院光电工程学院,山东枣庄,277160
  2. 西安电子科技大学计算机学院,陕西西安,710071
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132802.0290
  CLC： TN957.52
- Received：16 November 2012，
  
  Revised：06 January 2013，
  
  Published：15 April 2013
- 稿件说明：
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高珊, 马艳会. 基于边缘保持的SAR图像滤波算法研究[J]. 液晶与显示, 2013,28(2): 290-294

GAO Shan, MA Yan-hui. Algorithm Research of Filtering for SAR Images Based on Edges-Preserving[J]. , 2013,28(2): 290-294
高珊, 马艳会. 基于边缘保持的SAR图像滤波算法研究[J]. 液晶与显示, 2013,28(2): 290-294 DOI： 10.3788/YJYXS20132802.0290.

GAO Shan, MA Yan-hui. Algorithm Research of Filtering for SAR Images Based on Edges-Preserving[J]. , 2013,28(2): 290-294 DOI： 10.3788/YJYXS20132802.0290.

摘要

为了有效去除SAR图像中的相干斑噪声

同时很好地保留图像中的边缘细节

将双边滤波算法应用到SAR图像滤波

并使用ENL和EPI对其参数进行估计;经过参数估计的双边滤波算法作用于SAR图像后

很好地去除了斑点噪声且保留了边缘信息;实验结果表明

该算法的主观和客观数据都优于经典Lee滤波算法。

Abstract

In order to effectively clear away the speckle in SAR images

while preserving the SAR images edge detail

the application of BF (bilateral filtering) is extended to SAR images despeckling.The despeckling evaluation indexes

including the equivalent number of looks and the edge preserve index

are used to estimate the parameters. After BF with estimated parameters imposed on a normalized SAR image

the filtering result can achieve both despeckling and edge preservation simultaneously. Experimental results show that the visual quality and evaluation indexes of the proposed algorithm outperforms that of the classical Lee filtering alogrithm.

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references

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