2005 IEEE International Conference on Multimedia and Expo (2005)
July 6, 2005 to July 6, 2005
pp: 4 pp.
null Zhi Yang , Coll. of Comput. Sci., Zhejiang Univ., Hangzhou, China
null Jiajun Bu , Coll. of Comput. Sci., Zhejiang Univ., Hangzhou, China
null Chun Chen , Coll. of Comput. Sci., Zhejiang Univ., Hangzhou, China
null Xu Li , Coll. of Comput. Sci., Zhejiang Univ., Hangzhou, China
The emerging H.264 advanced video coding (H.264/AVC) standard achieves significant improvement in coding efficiency compared with previous standards such as MPEG-2 and H.263. One major contribution of its gain profits from variable-block-size motion estimation, which also leads to higher computational complexity. In this paper, we propose a fast predictive variable-block-size motion estimation algorithm for H.264/AVC. The algorithm takes advantage of three effective predictive schemes-stationary block prediction, predictive search for non-stationary blocks and predictive multi-pattern refinement search in merging process. Experimental results and comparative analysis have shown that our proposed algorithm can reduce the computational complexity up to about 2% of fast full search motion estimation algorithm, with negligible average PSNR loss of 0.065 dB and bit rate increase of 2.43%.
merging process, predictive variable-block-size, motion estimation, H.264-AVC, video coding, computational complexity, multipattern refinement search
n. Jiajun Bu, n. Chun Chen, n. Xu Li and n. Zhi Yang, "Fast predictive variable-block-size motion estimation for H.264/AVC," 2005 IEEE International Conference on Multimedia and Expo(ICME), Amsterdam, Netherlands, 2005, pp. 4 pp..