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1 November 1993 Speckle reduction in synthetic aperture radar imagery using wavelets
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In this paper, a method using the wavelet transform and the multiresolution analysis to remove the speckle effect in Synthetic Aperture Radar imagery is proposed. This technique allows the filtering of the most speckled structures and the improvement of the performances of a classical Wiener filter. Results on one example are presented. They confirm the efficiency of the multiresolution approach, as described in Cauneau and Ranchin' .The choice of the algorithm of wavelet transform and of the number of scales treated are discussed. The efficiency of the "a trous" algorithm is due to the isotropy of the wavelet used. This non-directional wavelet allows an improvement of the radiometric resolution without degrading significantly the geometrical resolution. Perspectives for an improvement of the quality of the speckle reduction are explored.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thierry Ranchin and Francois Cauneau "Speckle reduction in synthetic aperture radar imagery using wavelets", Proc. SPIE 2034, Mathematical Imaging: Wavelet Applications in Signal and Image Processing, (1 November 1993);

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