DocumentCode
794691
Title
Perceptually weighted wavelet-based codec for handheld videophone applications
Author
Thornton, L. ; Soraghan, J. ; Chakraborty, M.
Author_Institution
Dept. of Electr. & Electron. Eng., Strathclyde Univ., Glasgow, UK
Volume
38
Issue
15
fYear
2002
fDate
7/18/2002 12:00:00 AM
Firstpage
839
Lastpage
841
Abstract
A wavelet-based video codec that utilises the properties of the human visual system is presented. Perceptual weights are employed in the selection and vector quantisation of the wavelet coefficients. The weights are designed for a specific viewing distance and frame size with application to communication using a handheld videophone device. The results indicate a significant improvement in frame quality
Keywords
vector quantisation; video codecs; video coding; videotelephony; visual perception; wavelet transforms; frame quality; frame size; handheld videophone applications; human visual system; perceptually weighted wavelet-based codec; vector quantisation; viewing distance; wavelet coefficients;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20020558
Filename
1021877
Link To Document