• 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