Preconditioning plus multilevel V-cycles accelerates both exact and inexact proximal gradient methods for regularized image deblurring while preserving reconstruction quality.
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Multilevel Preconditioning Strategies for Convex Optimization Methods in Image Deblurring
Preconditioning plus multilevel V-cycles accelerates both exact and inexact proximal gradient methods for regularized image deblurring while preserving reconstruction quality.