Abstract
Based on motion mode adaptive lifting motion compensation, an embedded high performance asymmetric 3DSPIHT wavelet color video codec (MA-MC-AT3DSPIHT) is proposed in this paper. First, by making use of the direction histograms of motion vectors, the motion mode is determined according to whether or not the non-static motion vectors consistency exists in the GOP, and different temporal filters are imposed thereby for motion compensation. Then, the chrominance components at spatial high frequency subbands are quantified conforming to the JPEG2000 quantification scheme to further improve the coding performance. Experimental results show that the new MA-MC-AT3DSPIHT wavelet color video codec guarantees at least 6.0 db PSNR improvement at all rates over MPEG2. Moreover, with less than one seventh motion vectors coding cost, it yields a PSNR performance competitive with some of the other results reported in the literature.