Title :
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
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;
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2005.857244
