Very low bit-rate color video coding using adaptive subband vector quantization with dynamic bit allocation
نویسندگان
چکیده
In this correspondence a novel adaptive VQ based subband coding scheme for very low bit rate coding of video sequences is presented. Overlapped block motion estimation/compensation is employed to exploit interframe redundancy. A 2D wavelet transform (WT) is applied to the resulting displaced frame diierence (DFD) signal. The WT coeecients are encoded using an adaptive subband vector quantization (ASBVQ) scheme in combination with a dynamic bit allocation strategy based on marginal analysis. Fixed rate coding is provided. Comparative experimental results of the ASBVQ codec with the H.261 and the recently deened H.263 video coding standards are given.
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A novel adaptive VQ based subband coding scheme for very low bit rate coding of video sequences is presented. Overlapped block motion estimation/compensation is employed to exploit interframe redundancy. A 2D wavelet transform (WT) is applied to the resulting displaced frame diierence (DFD) signal. The WT coee-cients are encoded using an adaptive vector quantization scheme in combination with a...
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عنوان ژورنال:
- IEEE Trans. Circuits Syst. Video Techn.
دوره 7 شماره
صفحات -
تاریخ انتشار 1997