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A PDE-based method for ringing artifact removal on grayscale and color JPEG2000 images

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4 Author(s)
P. Bourdon ; IRCOM-SIC, UMR-CNRS 6615, Univ. of Poitiers, France ; B. Augereau ; C. Olivier ; C. Chatellier

As successor to JPEG, JPEG2000 aims to realize a very low bitrate. Although JPEG2000's rate distortion has been improved by approximately 30% against JPEG, as on most images compressed using overlapping transform-based algorithms, one can notice visible spurious oscillations, or ringing artifacts, around the edges of a JPEG2000-compressed image. We propose a partial differential equation (PDE) based image enhancement technique, in order to remove these ringing artifacts, while keeping the image's edges. Results are provided on grayscale and color images, showing a visible enhancement, confirmed by the PSNR increase.

Published in:

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on  (Volume:3 )

Date of Conference:

6-10 April 2003