One-step fractional motion estimation in H.264/AVC based on early predicted candidate

IEICE Electronics Express

Nam Thang Ta¹  Jun Rim Choi¹ 

[1] School of Electronics Engineering, Kyungpook National University

关键词: h.264;    fractional motion estimation;    video signal processing;   

DOI  :  10.1587/elex.7.982

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(8)The conventional two-step fractional motion estimation algorithm has been broadly adopted in the literature due to its high encoding performance. However it induces a huge computational complexity as well as a long latency. In this paper, we propose a fast fractional motion estimation algorithm. Based on high correlation between the motion vector of a block and its up-layer, as well as relationship of integer candidates, a one-step algorithm is proposed which not only reduces the computational complexity by eliminating unnecessary fractional-pels, but also saves hardware cost. Experimental results show that the proposed design can save 32% gate count, and reduce the latency by 39% compared with previous designs, while nearly maintaining the coding performance.

【 授权许可】

Unknown