基于DSP实时实现的H.264运动估计快速算法

Fast Motion Estimation Algorithm Based on DSP According to H.264

综合考虑运动估计的精度和搜索次数,提出了一种在DSP上实现符合H.264标准的运动搜索快速算法.该算法结合了钻石搜索和分层搜索的思想,在抽样块上进行菱形搜索,同时自适应预测搜索起始点,在保证估计质量的情况下减少了冗余搜索次数,极大的提高了搜索效率,对在DSP上实现H.264实时编码器具有重要的实用价值.

Considering the accuracy and search steps, a fast motion search algorithm according to the H. 264 standard based on DSP is proposed in this paper. Using the thought of diamond search algorithm and hierarchical search algorithm, the new algorithm carry the diamond search process in the double sample block, using the adaptive prediction of search origin, it will improve the efficiency of search greatly by reducing the redundant search steps, with high quality of estimation. The new algorithm has very important real value to the realization of H. 264 real time encoder based on DSP.