公开(公告)号：US06687299B2

公开(公告)日：2004-02-03

申请号：US09261171

申请日：1999-03-03

申请人： Toyohiko Yoshida ,  Kazuya Ishihara ,  Yoshinori Matsuura ,  Tetsuya Matsumura ,  Vasily Moshnyaga

发明人： Toyohiko Yoshida ,  Kazuya Ishihara ,  Yoshinori Matsuura ,  Tetsuya Matsumura ,  Vasily Moshnyaga

IPC分类号： H04B166

CPC分类号： H04N5/145 ,  G06T7/238 ,  G06T2207/10016 ,  H04N19/51 ,  H04N19/557

摘要： A motion estimation method capable of setting an optimum threshold value and allowing high speed processing includes the steps of: sequentially selecting one of blocks to be searched from a search range; sequentially calculating a difference between corresponding sample values of a reference block and one of blocks to be searched and accumulating an absolute value of difference; comparing an intermediate result of an accumulation value and a prescribed threshold value for a prescribed number of samples and interrupting the step of accumulating the absolute value of difference when the intermediate result exceeds the prescribed threshold value; and making one of blocks to be searched having a minimum final result of the accumulation value correspond to the reference block. The prescribed threshold value is dependent on the reference block. It is noted that the motion estimation apparatus is also disclosed.

摘要翻译： 能够设定最佳阈值并允许高速处理的运动估计方法包括以下步骤：从搜索范围顺序选择要搜索的块之一; 顺序地计算参考块的对应样本值与要搜索的块中的一个的差值，并累加差值的绝对值; 比较规定数量样本的累积值和规定阈值的中间结果，并且当中间结果超过规定阈值时中断累积差分绝对值的步骤; 并且使具有累积值的最小最终结果的要搜索的块之一对应于参考块。 规定的阈值取决于参考块。 注意，还公开了运动估计装置。

公开(公告)号：US06594396B1

公开(公告)日：2003-07-15

申请号：US09292380

申请日：1999-04-15

申请人： Toyohiko Yoshida ,  Vasily Moshnyaga

发明人： Toyohiko Yoshida ,  Vasily Moshnyaga

IPC分类号： G06K936

CPC分类号： H04N19/43 ,  H04N19/51

摘要： An adaptive difference computing element which consumes less power without any decrease in calculation accuracy includes: a first circuit receiving first and second data with the same bit lengths and each having bits at one and the other ends, determining if a prescribed relation is obtained between a bit string from each bit to the bit at one end of the first data and that of the second data for each bit of the first data and corresponding each bit of the second data, and replacing the each bit of the first data and the corresponding each bit of the second data with same predetermined bit values if the prescribed relation is obtained, and otherwise directly outputting the first and second data; and a subtracter having inputs connected to receive the first and second data from the first circuit, respectively.

摘要翻译： 一种在不降低计算精度的情况下消耗较少功率的自适应差分计算元件包括：第一电路接收具有相同比特长度的第一和第二数据，并且每个具有一端和另一端的比特，确定是否获得规定的关系 从第一数据的一端到位的位和第一数据的每一位的第二数据的位串和第二数据的每个位的相应位，并且替换第一数据的每个位和相应的每个位 如果获得规定的关系，则具有相同的预定比特值的第二数据的比特，否则直接输出第一和第二数据; 以及减法器，其具有分别从第一电路接收第一和第二数据的输入。