Wavelet footprints for speckle reduction of SAR images

Author

Ulfarsson, Magnus Orn ; Sveinsson, Johannes R. ; Benediktsson, Jon Atli

Author_Institution

Dept. of Electr. & Comput. Eng., Iceland Univ., Reykjavik, Iceland

Volume

6

fYear

2003

fDate

21-25 July 2003

Firstpage

4092

Abstract

Wavelet footprints, proposed by Dragotti (2002), are used for speckle reduction of synthetic aperture radar (SAR) images. Wavelet footprints contain all wavelet coefficients associated with a singular structure of a signal. Consequently, the dependency across scales that is inherent in wavelet transformation is eliminated. In the present paper, coefficients of wavelet footprints are thresholded with hard thresholding. The denoising method shows great promise for speckle removal and hence provides good detection performance for SAR based recognition.

Keywords

geophysical signal processing; geophysical techniques; image denoising; radar detection; radar imaging; speckle; synthetic aperture radar; SAR based recognition; SAR images; denoising method; detection; hard thresholding; speckle reduction; synthetic aperture radar images; wavelet footprints; Additive noise; Discrete wavelet transforms; Matching pursuit algorithms; Noise reduction; Pursuit algorithms; Speckle; Synthetic aperture radar; Wavelet coefficients; Wavelet domain; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International

Print_ISBN

0-7803-7929-2

Type

conf

DOI

10.1109/IGARSS.2003.1295372

Filename

1295372