公开(公告)号：US20210360268A1

公开(公告)日：2021-11-18

申请号：US17388426

申请日：2021-07-29

申请人： Virginie DRUGEON ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

发明人： Virginie DRUGEON ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC分类号： H04N19/31

摘要： An encoder includes circuitry, and memory coupled to the circuitry. The circuitry, in operation, for each of a plurality of sub-bitstreams having mutually different frame rates, encodes identification information into a header of a bitstream including the plurality of sub-bitstreams, the identification information indicating a temporal ID that is an identifier of a temporal layer related to a temporal scalability and corresponds to the sub-bitstream, and encodes level information indicating a conformance level of the sub-bitstream.

公开(公告)号：US20120133736A1

公开(公告)日：2012-05-31

申请号：US13369786

申请日：2012-02-09

申请人： Takahiro NISHI ,  Tadamasa Toma ,  Taiji Sasaki

发明人： Takahiro NISHI ,  Tadamasa Toma ,  Taiji Sasaki

IPC分类号： H04N13/00

CPC分类号： H04N13/161 ,  H04N19/30 ,  H04N19/597 ,  H04N19/70

摘要： An image coding method for properly handling a 3D video format including a base layer and an enhancement layer includes a video layer and a system layer. The video layer includes a step of coding an image to generate a coded stream. The system layer includes a step of multiplexing the coded stream and an identifier to generate a system stream, the identifier indicating whether or not the image has a left-right mixed format that includes a base layer and an enhancement layer and that has a left view image area and a right view image area in each picture. In the coding step, the image that includes the base layer and the enhancement layer and that has the left view image area and the right view image area in each picture is coded to generate the coded stream, when the image has the left-right mixed format.

摘要翻译： 用于正确处理包括基本层和增强层的3D视频格式的图像编码方法包括视频层和系统层。 视频层包括编码图像以生成编码流的步骤。 系统层包括复用编码流和标识符以生成系统流的步骤，所述标识符指示图像是否具有包括基本层和增强层的左右混合格式，并且具有左视图 图像区域和每个图像中的右视图图像区域。 在编码步骤中，当图像具有左右混合时，包括基本层和增强层并且具有每个图像中的左视图图像区域和右视图图像区域的图像被编码以生成编码流 格式。

公开(公告)号：US20120328021A1

公开(公告)日：2012-12-27

申请号：US13479636

申请日：2012-05-24

申请人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC分类号： H04N7/32

CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/107 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503 ,  H04N19/56

摘要： A moving picture coding apparatus includes: a motion vector predictor candidate calculation unit which calculates one or more motion vector predictor candidates and the number of available predictor candidates; an inter prediction control unit which selects an optimum motion vector predictor candidate; and a variable length coding unit which sets the motion vector predictor candidate list size to the number of available predictor candidates, and variable-length codes a motion vector predictor index used for coding a motion vector, by assigning a bit string according to the motion vector predictor candidate list size to the index.

摘要翻译： 运动图像编码装置包括：运动矢量预测器候选计算单元，其计算一个或多个运动矢量预测器候选和可用预测器候选的数量; 选择最佳运动矢量预测器候选的帧间预测控制单元; 以及可变长度编码单元，其通过根据运动矢量分配位串来将运动矢量预测器候选列表大小设置为可用预测器候选的数量，以及可变长度编码用于对运动矢量进行编码的运动矢量预测器索引 预测值候选人列表大小指数。

公开(公告)号：US20130016772A1

公开(公告)日：2013-01-17

申请号：US13546086

申请日：2012-07-11

申请人： Toru MATSUNOBU ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Kyoko TANIKAWA ,  Toshiyasu SUGIO

发明人： Toru MATSUNOBU ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Kyoko TANIKAWA ,  Toshiyasu SUGIO

IPC分类号： H04N7/50

CPC分类号： H04N19/86 ,  H04N19/126 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/186 ,  H04N19/36 ,  H04N19/593 ,  H04N19/70

摘要： An image coding method includes: generating a temporarily coded chrominance signal from the coded residual signal and the intra prediction chrominance signal; calculating a direct-current component of the input chrominance signal; calculating a direct-current component of the temporarily coded chrominance signal; calculating an offset value from the direct-current component of the input chrominance signal and the direct-current component of the temporarily coded chrominance signal; coding quantized coefficients, an intra prediction mode, and the offset value; and adding the offset value to the temporarily coded chrominance signal to generate a coded chrominance signal.

摘要翻译： 图像编码方法包括：从编码残差信号和帧内预测色度信号产生临时编码的色度信号; 计算输入色度信号的直流分量; 计算临时编码的色度信号的直流分量; 从输入色度信号的直流分量和临时编码的色度信号的直流分量计算偏移值; 编码量化系数，帧内预测模式和偏移值; 并将偏移值加到临时编码的色度信号中，以产生编码的色度信号。

公开(公告)号：US20130010869A1

公开(公告)日：2013-01-10

申请号：US13479669

申请日：2012-05-24

申请人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC分类号： H04N7/32

CPC分类号： H04N19/139 ,  H04N19/102 ,  H04N19/105 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/51 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70

摘要： An image coding method for coding an image on a block-by-block basis to generate a bitstream includes: deriving, as a first merging candidate, a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of the current block; deriving, as a second merging candidate, a merging candidate having a motion vector which is a predetermined vector; selecting a merging candidate to be used for the coding of the current block from the derived first merging candidate and the derived second merging candidate; and attaching an index for identifying the selected merging candidate to the bitstream.

摘要翻译： 一种用于逐块编码图像以生成比特流的图像编码方法包括：作为第一合并候选，导出作为预测方向，运动矢量和参考图像的组合的合并候选 用于编码当前块的索引; 作为第二合并候选，导出具有作为预定向量的运动矢量的合并候选; 从导出的第一合并候选和导出的第二合并候选中选择要用于当前块的编码的合并候选; 以及将用于识别所选择的合并候选的索引附加到比特流。

公开(公告)号：US20130004093A1

公开(公告)日：2013-01-03

申请号：US13534163

申请日：2012-06-27

申请人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC分类号： G06K9/36

CPC分类号： H04N19/00684 ,  H04N19/463 ,  H04N19/513 ,  H04N19/577

摘要： An image coding method includes: (i) determining, for each of one or more associated blocks, whether to add a motion vector of the associated block to a list, and (ii) adding the motion vector of the associated block to the list when determining that the motion vector of the associated block is to be added to the list; selecting, from the list, a motion vector which is to be merged to a current block; and (i) merging the selected motion vector to the current block, and (ii) coding the current block using the merged motion vector as a motion vector of the current block, and in the determining, it is determined that the motion vector of the associated block is not to be added to the list when an associated picture and an associated reference picture match temporally or when a current picture and a current reference picture match temporally.

公开(公告)号：US20130003860A1

公开(公告)日：2013-01-03

申请号：US13534363

申请日：2012-06-27

申请人： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

发明人： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC分类号： H04N7/26

CPC分类号： H04N19/134 ,  H04N19/12 ,  H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70

摘要： The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is “no_residual_data_flag”.

摘要翻译： 图像解码方法包括：从多个上下文中确定要处理的当前块中使用的上下文; 以及使用所确定的上下文对与当前块相对应的比特序列执行算术解码，其中在所述确定中：在使用当前块的相邻块的控制参数的条件下确定所述上下文，当所述信号类型为 第一类型，相邻块是当前块的左块和上块; 并且在信号类型是第二类型且第二类型是no_residual_data_flag时，在不使用上层的控制参数的条件下确定上下文。

公开(公告)号：US20120328209A1

公开(公告)日：2012-12-27

申请号：US13533205

申请日：2012-06-26

申请人： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

发明人： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC分类号： G06K9/36

CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/119 ,  H04N19/12 ,  H04N19/122 ,  H04N19/13 ,  H04N19/134 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/583 ,  H04N19/593 ,  H04N19/70

摘要： The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “mvd_l0” and “mvd_l1”.

摘要翻译： 图像解码方法包括：从多个上下文中确定要处理的当前块中使用的上下文; 以及使用所确定的上下文对与当前块相对应的比特序列执行算术解码，其中在所述确定中：在使用当前块的相邻块的控制参数的条件下确定所述上下文，当所述信号类型为 第一类型，相邻块是当前块的左块和上块; 并且在信号类型是第二类型的情况下，在不使用上部块的控制参数的条件下确定上下文，并且第二类型是mvd_l0和​​mvd_l1中的一个。

公开(公告)号：US20120307902A1

公开(公告)日：2012-12-06

申请号：US13482411

申请日：2012-05-29

申请人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC分类号： H04N7/36

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/107 ,  H04N19/503 ,  H04N19/52 ,  H04N19/56

摘要： An image coding method includes: determining a maximum number of merging candidates; deriving first merging candidates based on blocks spatially or temporally neighboring a current block; determining whether or not a total number of the first merging candidates is smaller than the maximum number; deriving, by making a combination out of the derived first merging candidates, a second merging candidate for bi-directional prediction when it is determined that the total number of the first merging candidates is smaller than the maximum number; selecting a merging candidate to be used for the coding of the current block from the first merging candidates and the second merging candidate; and coding, using the determined maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

摘要翻译： 图像编码方法包括：确定最大合并候选数; 基于与当前块空间或时间相邻的块来导出第一合并候选; 确定第一合并候选的总数是否小于最大数; 当确定所述第一合并候选的总数小于所述最大数目时，通过从所述导出的第一合并候选中进行组合而导出用于双向预测的第二合并候选; 从第一合并候选和第二合并候选中选择要用于当前块的编码的合并候选; 以及使用所确定的最大数目编码用于识别所选择的合并候选的索引，以及将编码索引附加到比特流。

公开(公告)号：US20120300846A1

公开(公告)日：2012-11-29

申请号：US13477606

申请日：2012-05-22

申请人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC分类号： H04N7/32

CPC分类号： H04N19/521 ,  H04N19/105 ,  H04N19/176 ,  H04N19/463 ,  H04N19/513 ,  H04N19/577 ,  H04N19/61 ,  H04N19/65 ,  H04N19/70

摘要： An image coding method bitstream includes: determining a maximum number of a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of a current block; deriving a first merging candidate; determining whether or not a total number of the first merging candidate is smaller than the maximum number; deriving a second merging candidate when it is determined that the total number of the first merging candidate is smaller than the maximum number; selecting a merging candidate for use in the coding of the current block from the first merging candidate and the second merging candidate; and coding, using the maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

摘要翻译： 图像编码方法比特流包括：确定作为当前块的编码中使用的预测方向，运动矢量和参考图像索引的组合的合并候选的最大数目; 得出第一个合并候选人; 确定所述第一合并候选的总数是否小于所述最大数; 当确定第一合并候选的总数小于最大数目时，导出第二合并候选; 从第一合并候选和第二合并候选中选择用于当前块的编码的合并候选; 以及使用最大数目编码用于识别所选择的合并候选的索引，以及将编码索引附加到比特流。