ARTIFACT-FREE JPEG DECOMPRESSION WITH TOTAL GENERALIZED VARIATION

Kristian Bredies, Martin Holler

2012

Abstract

We propose a new model for the improved reconstruction of JPEG (Joint Photographic Experts Group) images. Given a JPEG compressed image, our method first determines the set of possible source images and then specifically chooses one of these source images satisfying additional regularity properties. This is realized by employing the recently introduced Total Generalized Variation (TGV) as regularization term and solving a constrained minimization problem. In order to obtain an optimal solution numerically, we propose a primal-dual algorithm. We have developed a parallel implementation of this algorithm for the CPU and the GPU, using OpenMP and Nvidia’s Cuda, respectively. Finally, experiments have been performed, confirming a good visual reconstruction quality as well as the suitability for real-time application.

Paper Citation

in Harvard Style

Bredies K. and Holler M. (2012). ARTIFACT-FREE JPEG DECOMPRESSION WITH TOTAL GENERALIZED VARIATION . In Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2012) ISBN 978-989-8565-03-7, pages 12-21. DOI: 10.5220/0003824500120021

in Bibtex Style

@conference{visapp12,
author={Kristian Bredies and Martin Holler},
title={ARTIFACT-FREE JPEG DECOMPRESSION WITH TOTAL GENERALIZED VARIATION},
booktitle={Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2012)},
year={2012},
pages={12-21},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003824500120021},
isbn={978-989-8565-03-7},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2012)
TI - ARTIFACT-FREE JPEG DECOMPRESSION WITH TOTAL GENERALIZED VARIATION
SN - 978-989-8565-03-7
AU - Bredies K.
AU - Holler M.
PY - 2012
SP - 12
EP - 21
DO - 10.5220/0003824500120021