摘要
在视频图像压缩编码中，运动估值计算量巨大，其硬件实现极富挑战性．本文提出一种采用压缩阵列的新型低延滞块匹配运动估值器结构核结构既能够有效地实现全搜索、又能够实现如三步搜索等快速分层搜索算法与传统的累加树型结构相比，其运行效率显著提高，而芯片面积进一步减少在此基础上，本文还提出一种自适应块匹配和硬件实现方法，使块匹配运算量再降低约1／2～1／4。
There exists a great challenge in real-time implementation of motion estimation algorithms in vided eding because of the huge computatiollal overhead of motion estimation algorithms. A novel low-latency motion estimator architecture by using VLSI compression array is prooped for block matching algorithms in this paper, which can effectively implement full search, especially various hierarchical search algorithms, e. g.three-step search and so on. Compared with traditional accumulation treearchitecture it raises the efficiency further with more area-saving. Based on it, an adaptive block matchingalgorithm and its hardware implementation method are given, which decreases the computing burden ofblock matching to about 1/2～1/4 with a very few hardware penalty and even lower latency.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1998年第11期55-60,共6页
Acta Electronica Sinica
基金
国家自然科学基金
