【摘要】 运动估计是视频编码的一项关键技术。该文针对传统搜索算法串行处理的缺点,提出了一种基于并行处理的快速运动估计算法。该算法利用序列图像的相邻块运动矢量的高度相关性和运动矢量的中心偏移特性,在搜索过程中根据图像的内容(运动类型)进行并行处理,加速了块匹配的快速搜索策略。实验结果表明,该算法在速度和准确性方面都有了很大的提高。更多还原

【Abstract】 The motion estimation is a key technique used in the video compression.Aiming at the serial processing question existing in some typical search algorithms ,this paper presents a fast motion estimation algorithm based on parallel processing principle.Based on the high correlation of adjacent blocks’ motion vectors and the center-biased characteristic of image sequences,the algorithm processes the image according to its content (motion kind)and then speeds up the block matching.The results of experiment prove that the algorithm is greatly improved in speed and veracity.更多还原