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Titel:

A First Order Primal-Dual Algorithm for Nonconvex TV^q Regularization

Autor(en):
Thomas Möllenhoff, Evgeny Strekalovskiy, and Daniel Cremers
Abstract:
We propose an efficient first order primal-dual method for solving variational problems with nonconvex regularization such as TV^q. It is based on the recent idea in [1] to reformulate an existing primal-dual algorithm for convex optimization using Moreau’s identity. A systematic comparison to recent state of the art algorithms for nonconvex optimization (iteratively reweighted l1 optimization, quadratic splitting and convex relaxation methods) shows that the proposed algorithm has several adv...     »
Jahr:
2014
Sprache:
en
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