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    Moving picture coding method and moving picture decoding method
    116.
    发明申请
    Moving picture coding method and moving picture decoding method 有权
    运动图像编码方法和运动图像解码方法

    公开(公告)号：US20080063059A1

    公开(公告)日：2008-03-13

    申请号：US11976846

    申请日：2007-10-29

    申请人： Kiyofumi Abe ,  Shinya Kadono ,  Makoto Hagai ,  Satoshi Kondo

    发明人： Kiyofumi Abe ,  Shinya Kadono ,  Makoto Hagai ,  Satoshi Kondo

    IPC分类号： H04N7/12

    CPC分类号： H04N19/00024 ,  H04N19/105 ,  H04N19/114 ,  H04N19/115 ,  H04N19/14 ,  H04N19/149 ,  H04N19/156 ,  H04N19/162 ,  H04N19/164 ,  H04N19/177 ,  H04N19/51 ,  H04N19/573 ,  H04N19/58 ,  H04N19/61

    摘要： A moving picture coding apparatus (10a) according to the present invention includes a level analyzer (100a) that decides the maximum number of intra frame pixels which can be coded (Nfpx) and the maximum number of storage pixels which can be stored in a picture memory of a decoding apparatus (Nspx) on the basis of a level identifier (Lst) indicating a coding level that is designated by the user, thereby judging whether coding of an input image is possible or not and calculating the maximum number of reference pictures (Nrpn) as the number of reference candidate pictures which can be referred to at inter picture prediction coding, on the basis of the maximum number of intra frame pixels (Nfpx) and the input image size (the number of vertical pixels (Nhpx) and the number of horizontal pixels (Nwpx)). A decoding apparatus to which a bit stream from the moving picture coding apparatus (10a) is supplied can always decode the bit stream satisfactorily, and perform inter picture prediction decoding corresponding to the inter picture prediction coding on the coding end. Consequently, memory areas of a coding apparatus and a decoding apparatus that are adapted to a coding method in which there is no restraint on the capacity of the memory area can be designed.

    摘要翻译： 根据本发明的运动图像编码装置（10a）包括：电平分析器（100a），其决定可编码的最大帧数像素数（Nfpx）和最大存储像素数 基于指示用户指定的编码电平的电平识别符（Lst），解码装置（Nspx）的图像存储器，判断输入图像的编码是否可行，并且计算最大参考数 基于帧内像素的最大数目（Nfpx）和输入图像大小（垂直像素数（Nhpx）），可以在画面间预测编码时参照的参考候选画面的数目（Nrpn） 和水平像素数（Nwpx））。 提供来自运动图像编码装置（10a）的比特流的解码装置能够令人满意地解码比特流，并且对编码结束中的帧间预测编码执行帧间预测解码。 因此，可以设计适合于对存储区域的容量没有约束的编码方式的编码装置和解码装置的存储区域。

    Picture coding method and picture decoding method
    117.
    发明申请
    Picture coding method and picture decoding method 有权
    图像编码方法和图像解码方法

    公开(公告)号：US20080063056A1

    公开(公告)日：2008-03-13

    申请号：US11976552

    申请日：2007-10-25

    申请人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai

    发明人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai

    IPC分类号： H04B1/66

    CPC分类号： G06T9/004 ,  H04N19/105 ,  H04N19/11 ,  H04N19/13 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61

    摘要： The method includes the following units: a coefficient number detecting unit (109) for detecting the number of coefficients which has a value other than 0 for each block according to the generated coefficient, a coefficient number storing unit (110) for storing the number of coefficients detected, a coefficient number coding unit (111) for selecting a table for variable length coding based on the numbers of coefficients in the coded blocks located on the periphery of a current block to be coded with reference to the selected table for variable length coding so as to perform variable length coding for the number of coefficients.

    摘要翻译： 该方法包括以下单元：用于根据生成的系数检测对于每个块具有不同于0的值的系数的数目的系数数量检测单元（109），用于存储数量的系数数量存储单元（110） 系数检测单元，用于参照所选择的可变长度编码表，基于位于当前要编码的当前块的外围的编码块中的系数数，选择用于可变长度编码的表的系数编码单元（111） 以便对系数数进行可变长度编码。

    Variable length coding method and variable length decoding method
    119.
    发明申请
    Variable length coding method and variable length decoding method 有权
    可变长度编码方法和可变长度解码方法

    公开(公告)号：US20080056375A1

    公开(公告)日：2008-03-06

    申请号：US11976549

    申请日：2007-10-25

    申请人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

    发明人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

    IPC分类号： H04N7/26

    CPC分类号： H04N19/129 ,  H03M7/40 ,  H03M7/4006 ,  H04N19/00278 ,  H04N19/13 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/196 ,  H04N19/60 ,  H04N19/61

    摘要： A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit 203, a reordering unit 202, and a binarization unit 203 scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit 205 and a table storage unit 204 perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables 1˜4 for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value.

    摘要翻译： 可变长度编码方法包括：系数值扫描步骤，其中RL序列生成单元203，重新排序单元202和二值化单元203以从较高频率开始的预定扫描顺序扫描块内的系数值 分量朝向较低频率分量; 以及算术编码步骤，其中算术编码单元205和表存储单元204通过在概率表1〜4之间切换，根据系数值扫描步骤中使用的扫描顺序对系数值的绝对值进行算术编码 其中，在算术编码步骤中，当所述系数值的算术编码绝对值包括超过预定阈值的绝对值时，要使用的概率表在一个方向切换到另一概率表。