On motion compensation of wavelet coefficients

Hiroshi Ito, Nariman Farvardin

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

New intra- and inter-frame coding techniques for coding a wavelet decomposed video signal are proposed. These methods are based on the required accuracy of motion compensation for each of the different frequency subbands. For each subband, our methods prohibit inter-frame coding and switch to intra-frame coding when the estimated motion vector is not sufficiently accurate. The simple switching mechanism adopted results in a low overhead for coding the adaptation parameters while keeping the loss in coding gain negligible, compared to an unconstrained adaptive strategy in which intra- and inter-frame coding can be switched independently in each subband. The required accuracy of motion compensation is derived analytically for equally distributed pass-band signals and used throughout the paper. Simulation results for practical video sequences are presented.

Original languageEnglish
Pages (from-to)2161-2164
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume4
StatePublished - 1995
EventProceedings of the 1995 20th International Conference on Acoustics, Speech, and Signal Processing. Part 2 (of 5) - Detroit, MI, USA
Duration: 9 May 199512 May 1995

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