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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
    3.
    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）。

    Digital signal encoding and decoding method and apparatus without transmitting information on quantization width
    5.
    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。

    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 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
    7.
    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
    8.
    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。

    High efficiency coder and method employing overlapped motion compensation and perfect reconstruction filter banks
    9.
    发明授权
    High efficiency coder and method employing overlapped motion compensation and perfect reconstruction filter banks 失效
    高效编码器和采用重叠运动补偿和完善重构滤波器组的方法

    公开(公告)号：US5311310A

    公开(公告)日：1994-05-10

    申请号：US984041

    申请日：1992-12-01

    申请人： Hirohisa Jozawa ,  Sharad Singhal ,  Hiroshi Watanabe

    发明人： Hirohisa Jozawa ,  Sharad Singhal ,  Hiroshi Watanabe

    IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N19/103 ,  H04N19/136 ,  H04N19/137 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61 ,  H04N19/635 ,  H04N19/70 ,  H04N19/80 ,  H04N19/86 ,  H04N19/91 ,  H04N7/133 ,  H04N7/137

    CPC分类号： H04N19/86 ,  H04N19/51 ,  H04N19/527 ,  H04N19/60 ,  H04N19/61

    摘要： Our overlapped motion compensation unit and method, which is a motion compensation mechanism employing an overlapped block structure, minimize blocking effects prevalent in convention motion compensation. Our overlapped motion compensation unit and method are implemented on the basis of analysis/synthesis filter banks employed for coding resulting in compatibility between the block structure used for motion compensation and for coding. Our encoder, decoder, and coding method employ our novel overlapped motion compensation technique in combination with analysis/synthesis filter banks such as LOT to achieve improvements in coding efficiency and image quality above that of conventional image coders and coding methods. Specifically, in our encoder, decoder, and coding method, blocking effects prevalent in coders employing conventional motion compensation techniques and discrete cosine transforms are minimized and coding efficiency and image quality are maximized.

    摘要翻译： 我们的重叠运动补偿单元和方法是使用重叠块结构的运动补偿机制，使在常规运动补偿中普遍存在的阻塞效应最小化。 我们的重叠运动补偿单元和方法是在用于编码的分析/合成滤波器组的基础上实现的，导致用于运动补偿的块结构和编码之间的兼容性。 我们的编码器，解码器和编码方法采用我们的新型重叠运动补偿技术与诸如LOT的分析/合成滤波器组相结合，以实现高于常规图像编码器和编码方法的编码效率和图像质量的改进。 具体地说，在我们的编码器，解码器和编码方法中，使用常规运动补偿技术和离散余弦变换的编码器中流行的阻塞效应最小化，编码效率和图像质量最大化。