Lifting-based paraunitary filterbanks for lossy/lossless image coding

Author

Suzuki, Taizo ; Tanaka, Yuichi ; Ikehara, Masaaki

Author_Institution

Dept. of Electron. & Electr. Eng., Keio Univ., Yokohama, Japan

fYear

2006

fDate

4-8 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

This paper introduces one of the image transform methods using M-channel paraunitary filterbanks (PUFBs) based on Householder matirx. First, redundant parameters of PUFB are eliminated by using the fact that they can be factorized into Givens rotation matices. Next, we propose an eliminating redundant parameters method based on Householder matrix using relationship between Givens rotation and Householder matrices. In addition, PUFBs are factorized into the lifting structure for lossless image coding, and we call them as lifting-based PUFBs (LBPUFBs). LBPUFBs based on Householder matrix have less number of rounding operators than Givens rotation matrix version, since proposed structure is efficiency for lossless image coding. Finally, we show some exsamples to validate our method in lossy/lossless image coding.

Keywords

channel bank filters; image coding; matrix algebra; Givens rotation matrix; Householder matrix; LBPUFB; M-channel PUFB; image transform method; lifting-based paraunitary filterbank; lossless image coding; lossy image coding; redundant parameter elimination; Abstracts; Adders; Bit rate; Boats; Codecs; Encoding; Image coding; Paraunitary filterbank; householder matrix; lifting structure; lossless image coding; redundant parameters;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2006 14th European

Conference_Location

Florence

ISSN

2219-5491

Type

conf

Filename

7071520