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    • 1. 发明授权
    • Motion vector detecting device capable of accommodating a plurality of predictive modes
    • 能够适应多种预测模式的运动矢量检测装置
    • US06674798B2
    • 2004-01-06
    • US09961139
    • 2001-09-24
    • Kazuya IshiharaShinichi UramotoShinichi NakagawaTetsuya MatsumuraSatoshi KumakiAtsuo Hanami
    • Kazuya IshiharaShinichi UramotoShinichi NakagawaTetsuya MatsumuraSatoshi KumakiAtsuo Hanami
    • H04N736
    • H04N5/145G06T7/223G06T7/231G06T2207/10016H04N19/433H04N19/51
    • A processor array includes element processors which are arranged in a matrix in correspondence to respective pixels of a template block, which is a current picture image pixel block. Each element processor stores pixel data of a search window block, which is a corresponding reference picture image pixel block, and obtains an evaluation function value component with respect to the template block pixel data. A summing part sorts the evaluation function components received from the respective element processors of the processor array in accordance with a plurality of predictive modes and sums up the components for the respective sorts, for forming evaluation function values for the respective predictive modes. A comparison part compares the evaluation function values received from the summing part for each predictive mode, to decide a displacement vector providing the best similarity as a motion vector for each predictive mode. It is possible to simultaneously detect motion vectors according to a plurality of predictive modes. It is possible to detect motion vectors employed for moving image predictive compensation in accordance with a plurality of predictive modes at a high speed with a small hardware volume.
    • 处理器阵列包括对应于作为当前图像像素块的模板块的各个像素的矩阵排列的元件处理器。 每个元素处理器存储作为对应的参考图像像素块的搜索窗口块的像素数据,并获得关于模板块像素数据的评估函数值分量。 求和部分根据多种预测模式对从处理器阵列的相应元件处理器接收的评估函数分量进行排序,并对各种类型的组件求和,以形成各个预测模式的评估函数值。 比较部分比较从每个预测模式的求和部分接收的评估函数值,以确定提供最佳相似度的位移矢量作为每个预测模式的运动矢量。 可以根据多种预测模式同时检测运动矢量。 根据具有小硬件体积的高速的多种预测模式,可以检测用于运动图像预测补偿的运动矢量。
    • 4. 发明授权
    • Variable-length code table and variable-length coding device
    • 可变长度码表和可变长度编码装置
    • US5539401A
    • 1996-07-23
    • US483035
    • 1995-06-07
    • Satoshi KumakiKazuya IshiharaShinichi NakagawaAtsuo Hanami
    • Satoshi KumakiKazuya IshiharaShinichi NakagawaAtsuo Hanami
    • H04N19/60G06T9/00H03M7/42H04N1/41H04N1/411H04N19/423H04N19/426H04N19/625H04N19/93H03M7/40
    • H03M7/42G06T9/005H04N1/411
    • A variable-length code table, which is used for producing a variable-length code from data formed of one set of first and second equal-length components, stores at an address uniquely assigned by the one set of the equal-length components a corresponding variable-length code and a code length of the variable-length code. Combination of the first and second equal-length components is preselected such that the maximum value of the absolute value of the first equal-length component increases as the absolute value of the second equal-length component combined therewith decreases. The second equal-length components are classified into a plurality of classes in accordance with the magnitude of the absolute value. Each address includes a first region having a value and a length uniquely specified based on the class including the second equal-length component, a second region storing the first equal-length component, and a third region storing the second equal-length component, and is constructed to have a fixed length as a whole. Region lengths of the second and third regions are determined correspondingly to the class including the second equal-length component, and each are specifically determined to have the minimum value required for storing the maximum values of the absolute values of the first and second equal-length components of the combinations of the equal-length components included in the corresponding class.
    • 用于从由一组第一和第二等长分量形成的数据产生可变长度码的可变长度码表存储在由一组等长分量唯一分配的地址a相应的地址 可变长度代码和可变长度代码的代码长度。 预先选择第一和第二等长分量的组合,使得第一等长分量的绝对值的最大值随着与其组合的第二等长分量的绝对值减小而增加。 第二等长分量根据绝对值的大小被分类为多个类别。 每个地址包括具有基于包括第二等长分量的类别唯一地指定的值和长度的第一区域,存储第一等长分量的第二区域和存储第二等长分量的第三区域,以及 被构造为具有整体的固定长度。 对应于包括第二等长分量的类别确定第二和第三区域的区域长度,并且每个具体确定为具有存储第一和第二等长度的绝对值的最大值所需的最小值 相应类别中包括的等长分量组合的组成部分。