Abstract: The correlation between the luminance and chrominance components of color video is studied and a new intra-frame coding scheme of color video is proposed based on the DT(Delaunay Triangulation) mesh. In this scheme, the DT image representation is only made for the luminance component and parts mesh nodes of the luminance component Y are used to generate the mesh of chrominance components Cb and Cr via similar transformation. Simulation results show that the proposed method saves almost 30 percent in time while keeping the fine subjective quality for reconstructed image compared with the method by which the DT image representation is made for every component. Moreover, the new method can still provide the better objective quality compared with the intra frame coding method of H.263 and the still texture coding method of MPEG-4.

Key words: color video, intra-frame coding, Delaunay Triangulation mesh