Abstract: Motion estimation is a critical problem in video encoding, which directly affects the speed and quality of the encode. According to the motion vectors of the adjacent blocks, each frame of the sequences is divided into three regions. Then the different ways of the prediction methods and search strategies are used in different regions. An improved motion estimation algorithm is proposed. Experimental results show that the algorithm is better both at the image quality and the reduction of the number of search points.

Key words: motion estimation, adaptive rood pattern, early search termination

摘要： 运动估计是视频编码中的一个关键问题，直接影响着编码的速度和质量。根据相邻块的运动矢量特性，将图像序列中每一帧分成3个不同的区域，在预测方法和搜索策略上分别采用不同的方式，提出一种改进的运动估计算法。实验测试表明，该算法在图像质量和搜索点数量减少方面具有较好效果。

关键词: 运动估计, 自适应十字模型, 早期搜索终止

CLC Number: 

• TP391