Zhang Xudong, Wang Deshang, Peng Ying-ning, Lili Yuan, R. Mark
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Overlapped motion compensated region wavelet coder for very low bit-rates
We propose a new video coding scheme based on four improvements. (1) Half pixel precision is used for the overlapped motion compensation. (2) Region wavelet decomposition is only applied to the significant region in the prediction error image (displacement frame difference, DFD). (3) Zerotree is used for representation of the significant region wavelet coefficients. (4) A quantization model based on the human visual system (HVS) have been used for intraframe coding. Simulation results show that some coding gain has been reached compared to the conventional wavelet coder.
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