Reduction of blocking artifacts in block-based compressed images

Authors:
G. A. Triantafyllidis;D. Tzovaras;M. G. Strintzis
Affiliations:
Informatics and Telematics Institute, Thessaloniki, Greece;Informatics and Telematics Institute, Thessaloniki, Greece;Informatics and Telematics Institute, Thessaloniki, Greece
Venue:
ACIVS'05 Proceedings of the 7th international conference on Advanced Concepts for Intelligent Vision Systems
Year:
2005

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Abstract

A novel frequency domain technique for image blocking artifact reduction is presented in this paper. For each block, its DC and AC coefficients are recalculated for artifact reduction. To achieve this, a closed form representation of the optimal correction of the DCT coefficients is produced by minimizing a novel enhanced form of the Mean Squared Difference of Slope (MSDS), for every frequency separately. Experimental results illustrating the performance of the proposed method are presented and evaluated.