摘要
为在不影响视频质量的前提下,提高运动估计的搜索速度并节省编码时间,提出一种基于预测方向的多模板切换运动估计算法,利用最优点方向和运动方向的矢量和方向预测下次运动方向,并实时切换模板。在实现过程中采用查表方法实现模板切换和阈值的提前退出,以减少搜索时间。测试结果证明了该算法的有效性。
In this paper,a new motion estimation algorithm based on multi-template switching according to prediction direction is presented.It uses vectors’ sum of optimal point direction and movement direction to forecast the next movement direction and switches templates real-timely.During the realization process,in order to reduce search time,looking-up table method is used to achieve template switching and the threshold is set to exit.Text results indicate that this algorithm is effective.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第15期214-215,共2页
Computer Engineering
关键词
多模板切换
运动估计
预测方向
multi-template switch
motion estimation
prediction direction
