A new method for speckle filtering of SAR images

Zhao Zhiqin; Wang Jianguo; Wang Yunfeng; Huang Shunji

Volume 24 Issue 3

Mar. 2002

Turn off MathJax

Article Contents

Article Navigation > Journal of Electronics & Information Technology > 2002 > 24(3): 341-346

Zhao Zhiqin, Wang Jianguo, Wang Yunfeng, Huang Shunji. A new method for speckle filtering of SAR images[J]. Journal of Electronics & Information Technology, 2002, 24(3): 341-346.

Citation:

Zhao Zhiqin, Wang Jianguo, Wang Yunfeng, Huang Shunji. A new method for speckle filtering of SAR images[J]. Journal of Electronics & Information Technology, 2002, 24(3): 341-346.

Zhao Zhiqin, Wang Jianguo, Wang Yunfeng, Huang Shunji. A new method for speckle filtering of SAR images[J]. Journal of Electronics & Information Technology, 2002, 24(3): 341-346.

Citation:

Zhao Zhiqin, Wang Jianguo, Wang Yunfeng, Huang Shunji. A new method for speckle filtering of SAR images[J]. Journal of Electronics & Information Technology, 2002, 24(3): 341-346.

PDF( 1383 KB)

A new method for speckle filtering of SAR images

Received Date: 1999-06-11
Rev Recd Date: 2001-10-31
Publish Date: 2002-03-19

Abstract

Abstract

This paper analyzes the statistics of speckle in SAR. And based on wavelet transform, this paper puts forwards a new method for speckle suppression. After wavelet transform, Lee filter is adopted for HH part and CFAR (Constant False Alarm Ratio) is used for HG, GH, HH. This method not only improves the ENL of images, but also keeps the important targets and edge. Compared with Lee algorithm that was generally used in SAR speckle filtering, this new method has the great advantage in speckle suppression and edge keeping. The experimental results prove the effectiveness of the method.

FullText(HTML)

References(1)

References

M.Alberto,hnproved multilook techniques alpplied to SAR and SCANSAR imnages,IEEE Trans.on GRS.,1991,GRS-23(4),529-534.[2]J.S.Lee,A simple smoothing algorithm for synthetic aperture radar images,IEEE Trans.on Syst Man Cybern,1983,SMC-13(1),85-89.[3]J.S.Lee,Speckle suppression and analysis for synthetic alperture radar images,Opt Eng.,1986.25(5).636-643.[4]Yang Jinhao et al.,Speckle filtering for SAR images based on orthonormal wavelet transform.EUSAR,Germany,1996,151-154.[5]V.Zaitsev,Analysis of the speckle suppression algorithms based on the MAP aplproach,EUSAIR.Germany,1996,159-162.[6]S.Foucher et al.,Unsupervised multiscale speckle filtering,IEEE lint.Conference on Imagre Processing,1996,391-394.[7]李建平,小波分析与信号处理,重庆,重庆出版社,1997,282-300.

Relative Articles

Supplements(0)

Cited By

Proportional views