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

Author

Bourdon, P. ; Augereau, B. ; Olivier, C. ; Chatellier, C.

Author_Institution

IRCOM-SIC, UMR-CNRS 6615, Univ. of Poitiers, France

Volume

3

fYear

2003

fDate

6-10 April 2003

Abstract

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.

Keywords

data compression; image coding; image colour analysis; image enhancement; partial differential equations; transform coding; JPEG2000 images; PDE; PSNR; color images; grayscale images; image enhancement; overlapping transform; partial differential equation; rate distortion; ringing artifact removal; Anisotropic magnetoresistance; Bit rate; Color; Degradation; Frequency; Gray-scale; Image coding; PSNR; Smoothing methods; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

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

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1199578

Filename

1199578