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Algorithm for JPEG artifact reduction via local edge regeneration

[+] Author Affiliations
S. Alireza Golestaneh

Oklahoma State University, School of Electrical and Computer Engineering, Laboratory of Computational Perception and Image Quality, Stillwater, Oklahoma 74078

Damon M. Chandler

Oklahoma State University, School of Electrical and Computer Engineering, Laboratory of Computational Perception and Image Quality, Stillwater, Oklahoma 74078

J. Electron. Imaging. 23(1), 013018 (Feb 06, 2014). doi:10.1117/1.JEI.23.1.013018
History: Received June 13, 2013; Revised December 27, 2013; Accepted January 2, 2014
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Abstract.  Transform coding using the discrete cosine transform is one of the most popular techniques for image and video compression. However, at low bit rates, the coded images suffer from severe visual distortions. An innovative approach is proposed that deals with artifacts in JPEG compressed images. Our algorithm addresses all three types of artifacts which are prevalent in JPEG images: blocking, and for edges blurring, and aliasing. We enhance the quality of the image via two stages. First, we remove blocking artifacts via boundary smoothing and guided filtering. Then, we reduce blurring and aliasing around the edges via a local edge-regeneration stage. We compared the proposed algorithm with other modern JPEG artifact-removal algorithms. The results demonstrate that the proposed approach is competitive, and can in many cases outperform, competing algorithms.

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Citation

S. Alireza Golestaneh and Damon M. Chandler
"Algorithm for JPEG artifact reduction via local edge regeneration", J. Electron. Imaging. 23(1), 013018 (Feb 06, 2014). ; http://dx.doi.org/10.1117/1.JEI.23.1.013018


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