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A nonlinear multigrid method for total variation minimization from image restoration

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A nonlinear multigrid method for total variation minimization from image restoration

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Title: A nonlinear multigrid method for total variation minimization from image restoration
Author: Chen, Ke; Tai, Xue Cheng
Copyright year: 2007
Abstract: Image restoration has been an active research topic and variational formulations are particularly effective in high quality recovery. Although there exist many modelling and theoretical results, available iterative solvers are not yet robust in solving such modeling equations. Recent attempts on developing optimisation multigrid methods have been based on first order conditions. Different from this idea, this paper proposes to use piecewise linear function spanned subspace correction to design a multilevel method for directly solving the total variation minimisation. Our method appears to be more robust than the primal-dual method (Chan et al., SIAM J. Sci. Comput. 20(6), 1964–1977, 1999) previously found reliable. Supporting numerical results are presented.
Subject: DRNTU::Science::Mathematics::Applied mathematics::Numerical analysisDRNTU::Engineering::Computer science and engineering::Computing methodologies::Image processing and computer vision
Type: Journal Article
Series/ Journal Title: Journal of scientific computing
School: School of Physical and Mathematical Sciences
Rights: Journal of Scientific @ copyright 2006 Computing Springer Verlag. The journal's website is located at http://www.springerlink.com/home/main.mpx
Version: Published version

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