Efficient address vector quantization based image coding scheme

Chrissavgi Dre, Thanos Stouraitis, Costas E. Goutis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a new vector quantization scheme for encoding images is presented. This proposed scheme is called multi-stage hierarchical address vector quantization (MSHAVQ) and it combines the concepts of the multi-stage VQ (MSVQ), of the hierarchical VQ (HVQ), and of the address VQ (AVQ). Its encoder consists of several stages where the hierarchical VQ (HVQ) or the address VQ (AVQ) are applied while the larger image blocks are divided into smaller sub-blocks. Digital decimation and interpolation techniques are used to reduce the blocking effect in the reconstructed images. The experimental results show that the bit rate of the last stages of the MSHAVQ are reduced by a factor of two or three when compared with a memoryless VQ system and that the proposed coding scheme yields to images having an SNR value about 35 db at bit rate around 0.9 bits per pixel.

Original languageBritish English
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsNaohisa Ohta, Heinz U. Lemke, J.C. Lehureau
Pages258-265
Number of pages8
StatePublished - 1995
EventAdvanced Image and Video Communications and Storage Technologies - Amsterdam, Neth
Duration: 20 Mar 199523 Mar 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2451
ISSN (Print)0277-786X

Conference

ConferenceAdvanced Image and Video Communications and Storage Technologies
CityAmsterdam, Neth
Period20/03/9523/03/95

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