【作者】 田洪成； 段晓辉； 王道宪； 薛知行；

【Author】 Tian Hong-cheng, Duan Xiao-hui, Wang Dao-xian, Xue Zhi-xing(Image Processing Lab., Electronics Department, Peking University, Beijing, 100871;

【机构】 北京大学电子学系图像处理实验室；

【摘要】 本文提出了一种适用于H.264标准,亚象素运动估计算法的硬件实现架构,其采用一维处理单元(PE)阵列(1×16)来实现整数象素运动估计算法中最佳匹配块的搜索,从而得到最佳匹配模块的运动向量。再确定亚象素搜索的范围,插值后采用一维PE阵列(1×3)得到亚象素最佳匹配块的运动向量。与整数象素运动估计的架构相比,这种架构采用两个并行的PE阵列,在相同时钟周期内可以实现亚象素最佳匹配,并具有结构简单、易于实现的特点。更多还原

【Abstract】 In this paper, a very large-scale integration (VLSI) architecture for half-pixel motion estimation in H.264 standard was proposed. One 1-D processing element (PE) array was adopted to implement the search algorithm for finding the best-matched block. After the accurate integer pixel motion estimation, we could obtain the motion vector for the best-matched block and the range of the half-pixel motion estimation. Another 1-D PE array was adopted to implement the search algorithm for finding the best-matched half-pixel block. Compared with the system of integer pixel, this one, which is simple-structured and easy to realize, adopts two parallel PE arrays, and obtains the best-matched half-pixel block in the same time circles.更多还原