PERCEPTUALLY WEIGHTED VECTOR QUANTIZATION IN THE DCT DOMAIN

Authors
MACQ B SHI HQ
Citation
B. Macq et Hq. Shi, PERCEPTUALLY WEIGHTED VECTOR QUANTIZATION IN THE DCT DOMAIN, Electronics Letters, 29(15), 1993, pp. 1382-1384
Citations number
4
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
29
Issue
15
Year of publication
1993
Pages
1382 - 1384
Database
ISI
SICI code
0013-5194(1993)29:15<1382:PWVQIT>2.0.ZU;2-6
Abstract
A new vector quantisation scheme based on a perceptually weighted sign al-to-noise ratio (WSNR) is proposed. The Letter shows that the applic ation of the LBG procedure in the DCT domain using the WSNR as the fun ction to be optimised leads to substantial improvement in the perceptu al quality of the decoded images, compared to the LBG procedure in the pixel domain.