Contrast re-enhancement of Total-Variation regularization jointly with the Douglas-Rachford iterations
Language
en
Communication dans un congrès
This item was published in
Signal Processing with Adaptive Sparse Structured Representations (SPARS'15), 2015-07-06, Cambridge. 2015-07-06
English Abstract
Restoration of a piece-wise constant signal can be performed using anisotropic Total-Variation (TV) regularization. Anisotropic TV may capture well discontinuities but suffers from a systematic loss of contrast. This ...Read more >
Restoration of a piece-wise constant signal can be performed using anisotropic Total-Variation (TV) regularization. Anisotropic TV may capture well discontinuities but suffers from a systematic loss of contrast. This contrast can be re-enhanced in a post-processing step known as least-square refitting. We propose here to jointly estimate the refitting during the Douglas-Rachford iterations used to produce the original TV result. Numerical simulations show that our technique is more robust than the naive post-processing one.Read less <
Origin
Hal imported