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New methodology for adaptive vector quantisation

Lookup NU author(s): Lee Scargall, Emeritus Professor Satnam Dlay

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Abstract

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.

Publication metadata

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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