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
fDate :
7/18/2002 12:00:00 AM
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;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020558
