Fast Intra Mode Decision Algorithm Based on Tezture Feature for H.264/AVC
As the newest video coding standard, H.264/AVC uses the rate distortion optimization(RDO) method to select the optimal coding mode after the calculation of all the possible modes. The computational complexity is increased drastically, so it isn t fit for real time encoding and hardware design. In this paper, we propose a fast intra mode decision algorithm based on texture feature for H.264/AVC. First of all, we speculate the smooth degree of a macroblock(MB) s texture according to the variance value of some pixels, then only choose the intra luma 16×16 block for the smooth texture or only choose the intra luma 4×4 block for the complex texture. Secondly, we choose part modes of intra 4×4 block or intra 16×16 block based on direction of texture. The experimental result show our algorithm can reduce the encoding time obviously with little change of PSNR and Bit-rate.
H.264/AVC intra mode decision video coding
Yunhui Shi Huayuan Cai Baocai Yin
Beijing University of Technology
国际会议
The Fifth International Conference on Image and Graphics(第五届国际图像图形学学术会议 ICIG 2009)
西安
英文
92-96
2009-09-20（万方平台首次上网日期，不代表论文的发表时间）