Title :
Adaptive joint subband vector quantisation codec for handheld videophone applications
Author :
Akbari, A. Sheikh ; Soraghan, J.J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
fDate :
7/10/2003 12:00:00 AM
Abstract :
A new wavelet-based video codec is presented, which joins vectors in the same subbands of different frames in a frame group and uses the properties of the human visual system. Perceptual weights are designed and used in the vector selection and quantisation of the wavelet coefficients. Results indicate a significant improvement in frame quality compared to JPEG2000 image sequence coder.
Keywords :
adaptive signal processing; vector quantisation; video codecs; wavelet transforms; adaptive joint subband vector quantisation; codec; frame group; frame quality; handheld videophone applications; human visual system; perceptual weights; vector quantisation; vector selection; wavelet-based video codec;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030673
