Fast Sub-Pixel Motion Estimation Algorithm For H.264

被引：0
|
作者：
李华
胡浩
高伟
机构：
[1] School of Electronic Information Engineering Tianjin University
[2] School of Electronic Information Engineering Tianjin University
[3] Tianjin 300072 China
来源：
Transactions of Tianjin University | 2007年 / 04期
关键词：
H.264; motion estimation; sub-pixel; predicted motion vector; texture characteristic;
D O I：
暂无
中图分类号：
TP301.6 [算法理论];
学科分类号：
摘要：
A novel fast sub-pixel search algorithm is proposed to accelerate sub-pixel search. Based on the features of predicted motion vector (PMV) and texture direction observed, the proposed method effectively filters out impossible points and thus decreases 11 searched points in average during the sub-pixel search stage. A threshold is also adopted to early terminate the sub-pixel search. Simulation results show that the proposed method can achieve up to 4.8 times faster than full sub-pixel motion search scheme (FSPS) with less than 0.025 dB PSNR losses and 2.2% bit-length increases.
引用
收藏
页码：286 / 290
页数：5
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