DocumentCode :
3513630
Title :
A wavelet-based quadratic extension method for image deconvolution in the presence of poisson noise
Author :
Pustelnik, Nelly ; Chaux, Caroline ; Pesquet, Jean-Christophe
Author_Institution :
Inst. Gaspard Monge, Univ. Paris-Est, Marne-la-Vallee
fYear :
2009
fDate :
19-24 April 2009
Firstpage :
701
Lastpage :
704
Abstract :
Iterative optimization algorithms such as the forward-backward and Douglas-Rachford algorithms have gained much popularity since they provide efficient solutions to a wide class of non-smooth convex minimization problems arising in signal/image recovery. However, when images are degraded by a convolution operator and a Poisson noise, a particular attention must be paid to the associated minimization problem. To solve it, we propose a new optimization method which consists of two nested iterative steps. The effectiveness of the proposed method is demonstrated via numerical comparisons.
Keywords :
convex programming; convolution; image restoration; iterative methods; minimisation; noise; stochastic processes; wavelet transforms; Douglas-Rachford algorithm; Poisson noise; convolution operator; forward-backward algorithm; image deconvolution; image recovery; iterative optimization algorithms; nonsmooth convex minimization problems; signal recovery; wavelet-based quadratic extension method; Bayesian methods; Deconvolution; Degradation; Gaussian noise; Image restoration; Iterative algorithms; Iterative methods; Minimization methods; Optimization methods; Tomography; Deconvolution; Poisson distributions; iterative methods; optimization methods; wavelet transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Conference_Location :
Taipei
ISSN :
1520-6149
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2009.4959680
Filename :
4959680
Link To Document :
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