Optimal block boundary pre/postfiltering for wavelet-based image and video compression

Author

Jie Liang ; Chengjie Tu ; Tran, T.D.

Author_Institution

Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada

Volume

14

Issue

12

fYear

2005

Firstpage

2151

Lastpage

2158

Abstract

This paper presents a pre/postfiltering framework to reduce the reconstruction errors near block boundaries in wavelet-based image and video compression. Two algorithms are developed to obtain the optimal filter, based on boundary filter bank and polyphase structure, respectively. A low-complexity structure is employed to approximate the optimal solution. Performances of the proposed method in the removal of JPEG 2000 tiling artifact and the jittering artifact of three-dimensional wavelet video coding are reported. Comparisons with other methods demonstrate the advantages of our pre/postfiltering framework.

Keywords

channel bank filters; data compression; filtering theory; image reconstruction; video coding; wavelet transforms; JPEG2000; block boundaries; boundary filter bank; jittering artifact; polyphase structure; postfiltering framework; prefiltering framework; reconstruction error reduction; three-dimensional wavelet video coding; tiling artifact; video compression; wavelet-based image compression; Bit rate; Degradation; Filter bank; Frequency; Image coding; Scalability; Video coding; Video compression; Wavelet transforms; JPEG 2000; pre/postfilter; three-dimensional (3-D) wavelet video coding; tiling artifact removal; wavelet transform; Algorithms; Artifacts; Artificial Intelligence; Computer Graphics; Data Compression; Image Enhancement; Image Interpretation, Computer-Assisted; Numerical Analysis, Computer-Assisted; Signal Processing, Computer-Assisted; Video Recording;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/TIP.2005.857244

Filename

1532314