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    Motion vector predictive encoding method, motion vector decoding method, predictive encoding apparatus and decoding apparatus, and storage media storing motion vector predictive encoding and decoding programs
    1.
    发明授权
    Motion vector predictive encoding method, motion vector decoding method, predictive encoding apparatus and decoding apparatus, and storage media storing motion vector predictive encoding and decoding programs 有权
    运动矢量预测编码方法，运动矢量解码方法，预测编码装置和解码装置以及存储运动矢量预测编码和解码程序的存储媒体

    公开(公告)号：US07206346B2

    公开(公告)日：2007-04-17

    申请号：US10354663

    申请日：2003-01-30

    申请人： Atsushi Shimizu ,  Hirohisa Jozawa ,  Kazuto Kamikura ,  Hiroshi Watanabe ,  Atsushi Sagata ,  Seishi Takamura

    发明人： Atsushi Shimizu ,  Hirohisa Jozawa ,  Kazuto Kamikura ,  Hiroshi Watanabe ,  Atsushi Sagata ,  Seishi Takamura

    IPC分类号： H04N7/12 ,  H04B1/66

    CPC分类号： H04N19/51 ,  H04N19/517 ,  H04N19/52 ,  H04N19/527 ,  H04N19/537

    摘要： A motion vector predictive encoding method, a motion vector decoding method, a predictive encoding apparatus, a decoding apparatuses, and storage media storing motion vector predictive encoding and decoding programs are provided, thereby reducing the amount of generated code with respect to the motion vector, and improving the efficiency of the motion-vector prediction. If the motion-compensating mode of the target small block to be encoded is the global motion compensation, the encoding mode of an already-encoded small block is the interframe coding mode, and the motion-compensating mode of the already-encoded small block is the global motion compensation, then the motion vector of the translational motion model is determined for each pixel of the already-encoded small block, based on the global motion vector (steps S1–S5). Next, the representative motion vector is calculated as the predicted vector, based on the motion vector of each pixel of the already-encoded small block (step S6). Finally, the prediction error is calculated for each component of the motion vector and each prediction error is encoded (steps S7 and S8).

    摘要翻译： 提供了运动矢量预测编码方法，运动矢量解码方法，预测编码装置，解码装置和存储运动矢量预测编码和解码程序的存储介质，从而减少了相对于运动矢量产生的代码量， 并提高运动矢量预测的效率。 如果要编码的目标小块的运动补偿模式是全局运动补偿，则已经编码的小块的编码模式是帧间编码模式，并且已经编码的小块的运动补偿模式是 全局运动补偿，则基于全局运动矢量（步骤S1至S5），为已经编码的小块的每个像素确定平移运动模型的运动矢量。 接下来，基于已经编码的小块的每个像素的运动矢量，计算代表运动矢量作为预测矢量（步骤S6）。 最后，针对运动矢量的每个分量计算预测误差，对每个预测误差进行编码（步骤S 7和S 8）。

    Method for encoding and decoding moving vector, encoder and decoder for moving vector, and recording medium stored with encoding and decoding programs for moving vector
    2.
    发明授权
    Method for encoding and decoding moving vector, encoder and decoder for moving vector, and recording medium stored with encoding and decoding programs for moving vector 有权
    用于编码和解码移动矢量的方法，用于移动矢量的编码器和解码器，以及存储有用于移动矢量的编码和解码程序的记录介质

    公开(公告)号：US06473458B1

    公开(公告)日：2002-10-29

    申请号：US09254275

    申请日：1999-03-03

    申请人： Atsushi Shimizu ,  Hirohisa Jozawa ,  Kazuto Kamikura ,  Hiroshi Watanabe ,  Atsushi Sagata

    发明人： Atsushi Shimizu ,  Hirohisa Jozawa ,  Kazuto Kamikura ,  Hiroshi Watanabe ,  Atsushi Sagata

    IPC分类号： H04N1102

    CPC分类号： H04N19/517 ,  H04N19/51

    摘要： Motion vector encoding and decoding methods, motion vector encoding and decoding apparatuses, and storage media storing motion vector encoding and decoding programs are provided, thereby reducing the amount of generated code with respect to the motion vector. First, the motion vector of a target block to be encoded is detected (step S1), and a prediction error vector is calculated (step S2). After the length component of the motion vector is calculated (step S3), the length component is variable-length-encoded (step S4). The length component is checked (step S5), and if the length component is not 0, the direction component is calculated (step S6). The table for encoding the direction component is selected according to the length component, and the direction component is encoded (step S7).

    摘要翻译： 提供运动矢量编码和解码方法，运动矢量编码和解码装置以及存储运动矢量编码和解码程序的存储介质，从而减少相对于运动矢量产生的代码量。 首先，检测要编码的目标块的运动矢量（步骤S1），并计算预测误差矢量（步骤S2）。 在计算运动矢量的长度分量之后（步骤S3），长度分量是可变长度编码的（步骤S4）。 检查长度分量（步骤S5），如果长度分量不为0，则计算方向分量（步骤S6）。 根据长度分量选择用于对方向分量进行编码的表，对方向分量进行编码（步骤S7）。

    Brightness-variation compensation method and coding/decoding apparatus for moving pictures
    3.
    发明授权
    Brightness-variation compensation method and coding/decoding apparatus for moving pictures 失效
    用于运动图像的亮度变化补偿方法和编码/解码装置

    公开(公告)号：US06266370B1

    公开(公告)日：2001-07-24

    申请号：US08921352

    申请日：1997-08-29

    申请人： Kazuto Kamikura ,  Hiroshi Watanabe ,  Hirohisa Jozawa

    发明人： Kazuto Kamikura ,  Hiroshi Watanabe ,  Hirohisa Jozawa

    IPC分类号： H04N718

    CPC分类号： H04N19/162 ,  H04N19/105 ,  H04N19/142 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61

    摘要： A moving image brightness variation compensation method for encoding digital moving images for transmission and storage, and for image processing when editing moving images, the moving image brightness variation compensation method comprising a step of compensating for overall brightness variations by correcting a luminance value x of each pixel according to the formula DC·x+DB, wherein DB is a parameter indicating a gain change and DC is a parameter indicating a contrast change, the parameters representing overall luminance changes between a reference image plane and an image plane being processed.

    摘要翻译： 一种运动图像亮度变化补偿方法，用于编码用于发送和存储的数字运动图像，以及用于编辑运动图像时的图像处理，所述运动图像亮度变化补偿方法包括以下步骤：通过校正每个 像素，其中DB是表示增益变化的参数，DC是表示对比度变化的参数，表示正在处理的参考图像平面和图像平面之间的整体亮度变化的参数。

    Brightness-variation compensation method and coding/decoding apparatus for moving pictures
    4.
    发明授权
    Brightness-variation compensation method and coding/decoding apparatus for moving pictures 失效
    用于运动图像的亮度变化补偿方法和编码/解码装置

    公开(公告)号：US06456658B2

    公开(公告)日：2002-09-24

    申请号：US09832451

    申请日：2001-04-11

    申请人： Kazuto Kamikura ,  Hiroshi Watanabe ,  Hirohisa Jozawa

    发明人： Kazuto Kamikura ,  Hiroshi Watanabe ,  Hirohisa Jozawa

    IPC分类号： H04N718

    CPC分类号： H04N19/162 ,  H04N19/105 ,  H04N19/142 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61

    摘要： A moving image brightness variation compensation method for encoding digital moving images for transmission and storage, and for image processing when editing moving images, the moving image brightness variation compensation method comprising a step of compensating for overall brightness variations by correcting a luminance value x of each pixel according to the formula DC·x+DB, wherein DB is a parameter indicating a gain change and DC is a parameter indicating a contrast change, the parameters representing overall luminance changes between a reference image plane and an image plane being processed.

    摘要翻译： 一种运动图像亮度变化补偿方法，用于编码用于发送和存储的数字运动图像，以及用于编辑运动图像时的图像处理，所述运动图像亮度变化补偿方法包括以下步骤：通过校正每个 像素，其中DB是表示增益变化的参数，DC是表示对比度变化的参数，表示正在处理的参考图像平面和图像平面之间的整体亮度变化的参数。

    Brightness-variation compensation method and coding/decoding apparatus for moving pictures
    6.
    发明授权
    Brightness-variation compensation method and coding/decoding apparatus for moving pictures 有权
    用于运动图像的亮度变化补偿方法和编码/解码装置

    公开(公告)号：US06934331B2

    公开(公告)日：2005-08-23

    申请号：US10213397

    申请日：2002-08-05

    申请人： Kazuto Kamikura ,  Hiroshi Watanabe ,  Hirohisa Jozawa

    发明人： Kazuto Kamikura ,  Hiroshi Watanabe ,  Hirohisa Jozawa

    IPC分类号： H04N7/26 ,  H04N7/50 ,  H04N7/18

    CPC分类号： H04N19/162 ,  H04N19/105 ,  H04N19/142 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61

    摘要： A moving image brightness variation compensation method for encoding digital moving images for transmission and storage, and for image processing when editing moving images, the moving image brightness variation compensation method comprising a step of compensating for overall brightness variations by correcting a luminance value x of each pixel according to the formula DC·x+DB, wherein DB is a parameter indicating a gain change and DC is a parameter indicating a contrast change, the parameters representing overall luminance changes between a reference image plane and an image plane being processed.

    摘要翻译： 一种运动图像亮度变化补偿方法，用于编码用于发送和存储的数字运动图像，以及用于编辑运动图像时的图像处理，所述运动图像亮度变化补偿方法包括以下步骤：通过校正每个 像素，其中D B是指示增益变化的参数，并且D C 是表示对比度变化的参数，表示正在处理的参考图像平面和图像平面之间的整体亮度变化的参数。

    Digital signal encoding and decoding method and apparatus without transmitting information on quantization width
    8.
    发明授权
    Digital signal encoding and decoding method and apparatus without transmitting information on quantization width 失效
    数字信号编码和解码方法和装置，不传输量化宽度信息

    公开(公告)号：US6064324A

    公开(公告)日：2000-05-16

    申请号：US97774

    申请日：1998-06-16

    申请人： Atsushi Shimizu ,  Kazuto Kamikura ,  Hiroshi Watanabe ,  Atsushi Sagata

    发明人： Atsushi Shimizu ,  Kazuto Kamikura ,  Hiroshi Watanabe ,  Atsushi Sagata

    IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  H03M7/00 ,  H03M7/40

    CPC分类号： H04N19/152 ,  H04N19/126 ,  H04N19/176 ,  H04N19/463 ,  H04N19/60 ,  H04N19/46

    摘要： Digital signal encoding and decoding method and apparatus are provided, by which the amount of codes for communicating the quantization width can be reduced to the utmost and the coding efficiency can be improved. In the method, at the time of encoding a digital signal, the quantization width is determined based on the amount of encoded data which have already been encoded, and information on the quantization width is not included into generated encoded data. At the time of decoding, the quantization width is determined according to the amount of encoded data which have already been received. Therefore, even if the quantization width is changed, information on the quantization width is not included in the generated encoded data and thus the amount of generated codes can be reduced.

    摘要翻译： 提供了数字信号编码和解码方法和装置，通过该数字信号编码和解码方法和装置可以最大限度地减少用于传送量化宽度的代码量，并且可以提高编码效率。 在该方法中，在对数字信号进行编码时，基于已经编码的编码数据的量来确定量化宽度，并且量化宽度的信息不包括在生成的编码数据中。 在解码时，根据已经接收到的编码数据的量来确定量化宽度。 因此，即使量化宽度变化，量化宽度的信息也不包含在生成的编码数据中，因此可以减少生成的代码量。

    Scalable video encoding method and decoding method, apparatuses therefor, programs therefor, and storage media which store the programs
    9.
    发明授权
    Scalable video encoding method and decoding method, apparatuses therefor, programs therefor, and storage media which store the programs 有权
    可扩展视频编码方法和解码方法，其设备，程序和存储程序的存储介质

    公开(公告)号：US09386322B2

    公开(公告)日：2016-07-05

    申请号：US12665884

    申请日：2008-07-01

    申请人： Kazuya Hayase ,  Yukihiro Bandoh ,  Seishi Takamura ,  Kazuto Kamikura ,  Yoshiyuki Yashima

    发明人： Kazuya Hayase ,  Yukihiro Bandoh ,  Seishi Takamura ,  Kazuto Kamikura ,  Yoshiyuki Yashima

    IPC分类号： H04N19/30 ,  H04N19/137 ,  H04N19/59 ,  H04N19/80

    CPC分类号： H04N19/59 ,  H04N19/137 ,  H04N19/30 ,  H04N19/33 ,  H04N19/577 ,  H04N19/80

    摘要： A scalable video encoding method of performing encoding by predicting an upper-layer signal having a relatively high spatial resolution by means of interpolation using an immediately-lower-layer signal having a relatively low spatial resolution. The method computes a first weighting coefficient for each image area of a predetermined unit size in a search for estimating a motion between an encoding target image area in an upper layer and a reference image area, where the first weighting coefficient is computed based on a brightness variation between an image area, which belongs to an immediately-lower layer and has the same spatial position as the encoding target image area, and the reference image area; and performs a motion estimation using a signal which is obtained by correcting a decoded signal of the reference image area by the first weighting coefficient and functions as an estimated signal in the motion estimation, so as to compute a motion vector. Then the method computes a second weighting coefficient based on a brightness variation between a reference image area indicated by the motion vector and the image area which belongs to the immediately-lower layer and has the same spatial position as the encoding target image area; and determines a signal, which is obtained by correcting a decoded signal of the reference image area by using the second weighting coefficient, to be a compensated signal in motion compensation, which functions as a predicted signal of the encoding target image area.

    摘要翻译： 一种可分级视频编码方法，其通过使用具有相对低的空间分辨率的立即下层信号通过内插预测具有相对高的空间分辨率的上层信号来执行编码。 该方法在搜索中估计上层编码对象图像区域与基准图像区域之间的运动的基础上计算第一加权系数，计算出预定单位尺寸的每个图像区域的第一加权系数，其中基于亮度计算第一加权系数 属于立即下层并且具有与编码对象图像区域相同的空间位置的图像区域与参考图像区域之间的变化; 并且使用通过将参考图像区域的解码信号校正第一加权系数获得的信号并且在运动估计中用作估计信号来执行运动估计，以便计算运动矢量。 然后，该方法基于由运动矢量表示的参考图像区域和属于紧邻下层的图像区域之间的亮度变化并且具有与编码对象图像区域相同的空间位置来计算第二加权系数; 并且将通过使用第二加权系数校正参考图像区域的解码信号而获得的信号确定为作为编码对象图像区域的预测信号的运动补偿补偿信号。