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Lookup NU author(s): Lee Scargall, Emeritus Professor Satnam Dlay
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An image sequence coding scheme for low bit-rate video coding is presented. A new methodology is proposed for adaptive vector quantisation (AVQ), where the codebook is updated with new code-vectors. The new code-vectors replace less significant ones in the codebook, based on a novel-scoring criterion that utilises a forgetting factor and codebook half-life. The proposed AVQ method gives rise to an additional performance enhancement of approximately 1 dB over frequency scoring techniques. © IEE, 2000.
Author(s): Scargall LD, Dlay SS
Publication type: Article
Publication status: Published
Journal: IEE Proceedings: Vision, Image and Signal Processing
Year: 2000
Volume: 147
Issue: 6
Pages: 581-586
ISSN (print): 1350-245X
ISSN (electronic): 1751-9667
Publisher: Institution of Electronic and Electrical Engineers
URL: http://dx.doi.org/10.1049/ip-vis:20000614
DOI: 10.1049/ip-vis:20000614
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