NDLI: Tiling artifact reduction for JPEG2000 image at low bit-rate

Content Provider	IEEE Xplore Digital Library
Author	Xing Qin Xiao-Lang Yan Chong-Peng Yang Yang Ye
Copyright Year	2004
Description	Author affiliation: Inst. of VLSI Design, Zhejiang Univ., Hangzhou (Xing Qin; Xiao-Lang Yan)
Abstract	JPEG2000 is a very promising still image standard because of its excellent performance. However, it also causes a higher complexity to implement. In practice, in JPEG2000 coding systems, an image is segmented into serial tiles and each tile is compressed or transformed independently, thus creating tiling artifacts in the tile boundary. At low bit rates, tiling artifacts in JPEG2000 images are annoying. This paper introduced a new post-processing method to reduce this artifact, where max-lift wavelet subband decomposition was used and then subband coefficients were adaptively filtered and soft-thresholded. The post-processing is done out of JPEG2000 image coding systems, so it has no compatible problem with the JPEG2000 standard. Experiments showed that the post-processing was effective to obviously enhance the visual quality of the JPEG2000 image at low bit rates
Starting Page	1419
Ending Page	1422
File Size	315717
Page Count	4
File Format	PDF
ISBN	0780386035
DOI	10.1109/ICME.2004.1394500
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-27
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tiles Transform coding Image coding Wavelet transforms Bit rate Image quality Filters Very large scale integration Information science Design engineering
Content Type	Text
Resource Type	Article

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