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1. 发明授权

US6031582A System and method for estimating motion vector in macro block 失效
标题翻译：用于估计宏块中的运动矢量的系统和方法
公开(公告)号：US6031582A
公开(公告)日：2000-02-29
申请号：US993747
申请日：1997-12-19
申请人： Tsuyoshi Nishikawa , Yoshiro Tsuboi , Masafumi Takahashi
发明人： Tsuyoshi Nishikawa , Yoshiro Tsuboi , Masafumi Takahashi
IPC分类号： H04N11/04 , G06T1/20 , G06T7/20 , H04N19/105 , H04N19/136 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/50 , H04N19/51 , H04N7/30 , H04N7/32
CPC分类号： H04N19/557 , H04N19/51
摘要： A motion vector estimating system prepares a predetermined range of a frame/field of image data as a macro block, selects a plurality of proposed motion vectors in the reference region, calculates a signal-strength difference between pixels corresponding to each of the proposed motion vectors of current and reference images. The system comprises: an accumulating element for deriving an accumulation result in parallel on the basis of the signal-strength difference by means of accumulating circuits connected in parallel as a pipeline; an accumulation stopping element having separate stop circuits for separately stopping the accumulation of the accumulating element every n accumulating circuits; and a control element for controlling the supply of the current image data and the reference image data for proposed motion vectors for each of the accumulating circuits, and for outputting a separate stop signal to the accumulation stopping element for stopping the accumulation for the proposed motion vector of the accumulating circuits immediately after the accumulated value of the absolute values of the differences between the signal values of picture elements of the current image and the reference image exceeds a predetermined value. Thus, it is possible to suitably omit unnecessary accumulation in a pipeline processing for estimating a motion vector, so that it is possible to increase the processing speed and to decrease the electric power consumption.
摘要翻译：运动矢量估计系统准备作为宏块的图像数据的帧/场的预定范围，在参考区域中选择多个提出的运动矢量，计算与提出的每个运动矢量相对应的像素之间的信号强度差的当前和参考图像。该系统包括：累积元件，用于通过累积作为管道并联连接的电路，基于信号强度差导出累积结果; 累积停止元件具有分开的停止电路，用于每n个累积电路分别停止累积元件的累积; 以及控制元件，用于控制针对每个累加电路的所提出的运动矢量的当前图像数据和参考图像数据的供给，并且用于向累积停止元件输出单独的停止信号，以停止所提出的运动矢量的累积紧接在当前图像的像素的信号值与参考图像之间的差的绝对值的累加值之后的累积电路的值超过预定值。因此，可以适当地省略用于估计运动矢量的流水线处理中的不必要的累积，从而可以提高处理速度并降低电力消耗。

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