Title :
Searching the most appropriate mother wavelets for Bayesian denoising of sonar images in the Hyperanalytic Wavelet domain
Author :
Nafornita, Corina ; Isar, Dorina ; Isar, Alexandru
Author_Institution :
Politeh. Univ. of Timisoara, Timisoara, Romania
Abstract :
We use of a new variant of Hyperanalytic Wavelet Transform (HWT) for the denoising of SONAR images affected by speckle noise. This wavelet transform (WT) is associated with a maximum a posteriori (MAP) filter, named bishrink. The best results are obtained with the biorthogonal mother wavelets Daubechies 9/7.
Keywords :
Bayes methods; image denoising; maximum likelihood estimation; sonar imaging; wavelet transforms; Bayesian denoising; Daubechies 9/7; HWT; MAP filter; biorthogonal mother wavelets; bishrink; hyperanalytic wavelet domain; maximum a posteriori; sonar image denoising; speckle noise; Noise; Noise reduction; Sonar; Speckle; Wavelet domain; Wavelet transforms; Bishrink; Denoising; Hyperanalytic Wavelet Transform; MAP;
Conference_Titel :
Statistical Signal Processing Workshop (SSP), 2011 IEEE
Conference_Location :
Nice
Print_ISBN :
978-1-4577-0569-4
DOI :
10.1109/SSP.2011.5967649
