H.264/AVC运动估计算法的硬件结构研究

Hardware architecture of motion estimation algorithm for H.264/AVC

运动估计是H.264/AVC编码器的重要组成部分,其运算量占据了整个编码器计算时间的60%～90%。对H.264/AVC运动估计的几种快速搜索算法进行分析比较,并在此基础上提出先进的六边形搜索算法。给出运动估计快速搜索算法的一般硬件结构,并在此基础上提出具有流水线并行处理能力的先进六边形搜索算法的硬件结构。实验结果表明:该硬件结构系统工作频率能够达到109.06MHz,完全能够满足高清视频实时应用的要求。

Motion estimation is an important part of H. 264/AVC encoder, and its computation consumes 60% to 90% of the entire encoder computation time. In this paper, an advanced hexagon search algorithm is proposed by the comparison of several fast search algorithms for motion estimation, And the hardware architecture with the capabilities of pipelined parallel processing for advanced hexagon search algorithm is proposed. Experimental result shows that the operation fi＇equency of hardware architecture system can reach 109.06 MHz, which is fully able to meet the application for real-time high definition videos.