Adaptive joint subband vector quantisation codec for handheld videophone applications
AS Akbari, JJ Soraghan - Electronics Letters, 2003 - search.proquest.com
Electronics Letters, 2003•search.proquest.com
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. The results indicate a significant improvement in frame quality
compared to JPEG2000 image sequence coder.
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. The results indicate a significant improvement in frame quality
compared to JPEG2000 image sequence coder.
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. The results indicate a significant improvement in frame quality compared to JPEG2000 image sequence coder.
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