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Authors: Kristian Bredies and Martin Holler

Affiliation: Karl-Franzens University Graz, Austria

ISBN: 978-989-8565-03-7

ISSN: 2184-4321

Keyword(s): Artifact-free JPEG Decompression, Total Generalized Variation, Image Reconstruction.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Image and Video Coding and Compression ; Image Enhancement and Restoration ; Image Formation and Preprocessing

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.

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Paper citation in several formats:
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 2: VISAPP, (VISIGRAPP 2012) ISBN 978-989-8565-03-7, ISSN 2184-4321, pages 12-21. DOI: 10.5220/0003824500120021

@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 2: VISAPP, (VISIGRAPP 2012)},
year={2012},
pages={12-21},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003824500120021},
isbn={978-989-8565-03-7},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 2: 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

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