A Convergent Overlapping Domain Decomposition Method for Total Variation Minimization

Details A Convergent Overlapping Domain Decomposition Method for Total Variation Minimization A Convergent Overlapping Domain Decomposition Method for Total Variation Minimization

2009-05-14

arxiv.org/abs/0905.2404v1

Mathematics

Numerical Analysis

Matlab code and numerical experiments of the methods provided in this paper can be downloaded at the web-page: http://homepa

Scientific paper

This paper is concerned with the analysis of convergent sequential and parallel overlapping domain decomposition methods for the minimization of functionals formed by a discrepancy term with respect to data and a total variation constraint. To our knowledge, this is the first successful attempt of addressing such strategy for the nonlinear, nonadditive, and nonsmooth problem of total variation minimization. We provide several numerical experiments, showing the successful application of the algorithm for the restoration of 1D signals and 2D images in interpolation/inpainting problems respectively, and in a compressed sensing problem, for recovering piecewise constant medical-type images from partial Fourier ensembles.

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