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公开(公告)号:US5901248A
公开(公告)日:1999-05-04
申请号:US692993
申请日:1996-08-06
CPC分类号: G06T7/202 , H04N19/43 , H04N19/433 , H04N19/51 , H04N19/523 , H04N5/145 , G06T2207/10016
摘要: A programmable motion estimator includes one dual ported memory for storing an image block, the prediction error, and a temporary block used in interpolation, and a pixel-group random access dual ported memory for storing a search window. The two ports of the two memories are selectively applied to an arithmetic logic unit, or ALU, through a multiplexer. One output of the ALU provides an absolute difference, which is furnished to a tree adder. Another output of the ALU provides an average value or a difference value, as selected, which is routed to the inputs of the image memory and the search memory. Among other tasks, the programmable motion estimator performs motion vector searching, half pixel interpolation, quarter pixel interpolation and error prediction determination.
摘要翻译: 可编程运动估计器包括用于存储图像块的一个双端口存储器,预测误差和在插值中使用的临时块,以及用于存储搜索窗口的像素组随机存取双端口存储器。 两个存储器的两个端口通过多路复用器选择性地应用于算术逻辑单元或ALU。 ALU的一个输出提供绝对差异,它被提供给树加法器。 ALU的另一输出提供被选择的平均值或差值,其被路由到图像存储器和搜索存储器的输入。 在其他任务中,可编程运动估计器执行运动矢量搜索,半像素插值,四分之一像素插值和误差预测确定。