MVFAST运动估计算法改进及其VLSI体系结构  

Improvement to MVFAST Motion Estimation Algorithm and VLSI Architecture

作　　者：杨德[1] 张建龙[1] 高新波[1] 

机构地区：[1]西安电子科技大学电子工程学院影像处理系统实验室,陕西西安710071

出　　处：《计算机技术与发展》2008年第5期1-5,共5页Computer Technology and Development

基　　金：国家自然科学基金资助项目(60202004)

摘　　要：文中在分析MVFAST算法的基础上,提出了对MVFAST算法搜索窗的改进。通过对搜索窗的改进,在不影响图像质量的前提下,提高了算法的搜索速度。设计了支持该算法的体系结构和处理单元。给出了灵活的数据流结构和搜索策略。对大量不同的视频序列、分辨率不同的视频序列、运动剧烈程度不同的视频序列进行了实验。大量的实验结果表明,设计的体系结构的处理速度得到了明显的提高,内存访问带宽大大减小,获得了与全搜索算法可比的图像质量。Improvement to the seareh window of MVFAST algorithm is proposed,on the basis of analyzing MVFAST algorithm. By its improvement,and in the guarantee of image quality,the search speed of algorithm is improved. Designs the architecture and processing element. At the same time, the architecture for flexible data flow and search strategy is proposed. Tests different video sequences, video sequences on different resolution and video sequences on different motion degree, experiment results verify that the processing speed of the architecture is improved obviously, the memory accessing bandwidth is reduced dramatically, and its image quality is similar to the full search algorithm.

关 键 词：运动矢量 体系结构 MVFAST 处理单元 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]