Adaptive joint subband vector quantisation codec for handheld videophone applications
Akbar Sheikh-Akbari, John J. Soraghan · Electronics Letters · 2003
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.