IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
Image Restoration of JPEG Encoded Images via Block Matching and Wiener Filtering
Yutaka TAKAGITakanori FUJISAWAMasaaki IKEHARA
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2017 Volume E100.A Issue 9 Pages 1993-2000

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Abstract

In this paper, we propose a method for removing block noise which appears in JPEG (Joint Photographic Experts Group) encoded images. We iteratively perform the 3D wiener filtering and correction of the coefficients. In the wiener filtering, we perform the block matching for each patch in order to get the patches which have high similarities to the reference patch. After wiener filtering, the collected patches are returned to the places where they were and aggregated. We compare the performance of the proposed method to some conventional methods, and show that the proposed method has an excellent performance.

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© 2017 The Institute of Electronics, Information and Communication Engineers
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