SAR图像保留边缘多窗口相干斑滤除方法

庞晓红; 王贞松

doi:10.11834/jrs.19980405

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SAR图像保留边缘多窗口相干斑滤除方法
Multiple -window Processing of SAR Image with Speckle-smoothing and Edge-preserving
1998年第4期
纸质出版：1998
DOI： 10.11834/jrs.19980405
稿件说明：

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[1]庞晓红,王贞松.SAR图像保留边缘多窗口相干斑滤除方法[J].遥感学报,1998(04):259-263. DOI： 10.11834/jrs.19980405.

Pang Xiaohong. Multiple -window Processing of SAR Image with Speckle-smoothing and Edge-preserving[J]. Journal of Remote Sensing, 1998, (4). DOI： 10.11834/jrs.19980405.

摘要

在处理合成孔径雷达（ＳＡＲ）图像中，精确地估计图像的局部统计特性和尽可能多地滤除相干斑都需要较大的窗口尺寸，而这与图像边缘和纹理结构的检测需要较小的窗口尺寸相矛盾。一般滤波器都是二者窗口尺寸的均衡，这必然导致二者都不能取得很好的效果。本文提出的新方法有效的解决了这一矛盾。此方法使处理后的ＳＡＲ图像既保存了边缘和纹理结构，避免了以往滤波器中使边缘变模糊的问题，又有效地滤除了相干斑噪声。

Abstract

In the processing of Synthetic Aperture Radar （SAR） Images

a large window size

which is often used in estimating the local statistics of the image and filtering the speclke is needed. On the other hand

contrary

detection of edges and textural features often need small sized windows. Normal filters

which are intermediary ofthe two above

don’t give better results. This paper presents a new effective algorithm to solve the problem. In this method

the edges and the textural features of the SAR images are presented so the the problem of edge smearing in the normal filtering algorithm is avoid and the speckles are filtered effectively.