New Intra Coding Scheme for High-definition Video Coding
Jin Heo, Yo‐Sung Ho · Journal of the Institute of Electronics Engineers of Korea · 2008
Although the H.264 video coding scheme is popular, it is not efficient for high-definition (HD) video coding because the size of its macroblock is relatively small for the HD video resolution. In this paper, we propose a new intra coding scheme based on the enlarged macroblock size. For the luminance component, intra prediction and intra prediction in H.264 are scaled into intra prediction and intra prediction, respectively. For the chrominance components, intra prediction is extended to intra prediction. Along with the basic coding block size, an integer discrete cosine transform (DCT) is used. Experimental results show that the proposed algorithm improves coding efficiency of the intra coding for HD video: PSNR gain by 0.23dB and bit-rate reduction by 5.32% on average.