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1. 发明授权

US5864372A Apparatus for implementing a block matching algorithm for motion estimation in video image processing 失效
标题翻译：用于在视频图像处理中实现用于运动估计的块匹配算法的装置
公开(公告)号：US5864372A
公开(公告)日：1999-01-26
申请号：US763089
申请日：1996-12-10
申请人： Hong-Yi Chen , Qing-Ming Shu
发明人： Hong-Yi Chen , Qing-Ming Shu
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/51
摘要： An apparatus for implementing block matching for motion estimation in video image processing. The apparatus receives the pixel data of an original image block and the pixel data of a compared image block selected from a number of compared image blocks during video image processing. The selected image blocks are compared to determine a movement vector. The apparatus has a multi-stage pipelined tree-architecture that includes four stages. The first computational stage produces corresponding pairs of difference data and sign data. A second compression stage in the process pipeline includes a compression array that receives all the difference data and sign data, which are added together to produce compressed summation data and compressed sign data. The third summation stage in the pipeline receives the compressed summation and sign data and produces a mean absolute error for the original and compared image block pixels. A last minimization stage receives the mean absolute error for each of the compared image blocks and determines a minimum mean absolute error from among them. The compression array includes of a number of full and half adders arranged in a multi-level configuration in which none of the adder operand inputs and the carry-in inputs is left un-connected.
摘要翻译：一种用于在视频图像处理中实现运动估计的块匹配的装置。在视频图像处理期间，该装置接收原始图像块的像素数据和从多个比较的图像块中选择的比较图像块的像素数据。比较所选择的图像块以确定运动矢量。该装置具有包括四个阶段的多级流水线树结构。第一个计算阶段产生相应的差分数据和符号数据对。处理流程中的第二压缩级包括接收所有差分数据和符号数据的压缩阵列，它们相加在一起以产生压缩求和数据和压缩符号数据。流水线中的第三求和级接收压缩求和和符号数据，并产生原始和比较的图像块像素的平均绝对误差。最后一个最小化阶段接收每个比较图像块的平均绝对误差，并确定其中的最小平均绝对误差。压缩阵列包括以多电平配置布置的多个全加和半加法器，其中加法器操作数输入和进位输入都不被保持不连接。

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