Department of Mathematics
Alternating minimization method for total variation based wavelet shrinkage model
In this paper, we introduce a novel hybrid variational model which generalizes the classical total variation method and the wavelet shrinkage method. An alternating minimization direction algorithm is then employed. We also prove that it converges strongly to the minimizer of the proposed hybrid model. Finally, some numerical examples illustrate clearly that the new model outperforms the standard total variation method and wavelet shrinkage method as it recovers better image details and avoids the Gibbs oscillations. © 2010 Global-Science Press.
Alternating minimization, Convergence, Gibbs oscillation, Total variation, Wavelet shrinkage
Source Publication Title
Communications in Computational Physics
Global Science Press
Zeng, Tieyong, Xiaolong Li, and Michael Ng. "Alternating minimization method for total variation based wavelet shrinkage model." Communications in Computational Physics 8.5 (2010): 976-994.