Lifting-based paraunitary filterbanks for lossy/lossless image coding

Taizo Suzuki, Yuichi Tanaka, Masaaki Ikehara

    Research output: Contribution to journalConference article

    1 Citation (Scopus)

    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.

    Original languageEnglish
    JournalEuropean Signal Processing Conference
    Publication statusPublished - 2006 Dec 1
    Event14th European Signal Processing Conference, EUSIPCO 2006 - Florence, Italy
    Duration: 2006 Sep 42006 Sep 8

    Keywords

    • Householder matrix
    • Lifting structure
    • Lossless image coding
    • Paraunitary filterbank
    • Redundant parameters

    ASJC Scopus subject areas

    • Signal Processing
    • Electrical and Electronic Engineering

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