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公开(公告)号：US20170302919A1
公开(公告)日：2017-10-19
申请号：US15631755
申请日：2017-06-23
Inventor： Kazuma SAKAKIBARA , Kiyofumi ABE , Naoki YOSHIMATSU , Hideyuki OHGOSE , Koji ARIMURA , Hiroshi ARAKAWA , Kazuhito KIMURA
IPC: H04N19/103 , H04N19/124 , H04N19/593 , H04N19/61
CPC classification number: H04N19/103 , H04N19/124 , H04N19/593 , H04N19/61
Abstract: An image encoding method includes: selecting, for each processing block, one of intra prediction modes specified by a coding standard, and performing intra prediction according to the intra prediction mode, wherein the intra prediction modes include a lower-left reference mode in which a processing block located at lower left of a current processing block is referred to, the processing blocks include a first processing block and a second processing block located at upper right of the first processing block, the second processing block being equal in size to the first processing block, the coding standard defines that information on the second processing block is written into a bitstream after information on the first processing block, and in the intra prediction, (i) selection of the lower-left reference mode is prohibited and intra prediction is performed on the second processing block, and, (ii) intra prediction is performed on the first processing block.
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公开(公告)号：US20150271516A1
公开(公告)日：2015-09-24
申请号：US14660419
申请日：2015-03-17
Inventor： Koji ARIMURA , Kazuhito KIMURA , Hideyuki OHGOSE , Hiroshi ARAKAWA , Kiyofumi ABE , Kazuma SAKAKIBARA
IPC: H04N19/513 , H04N19/172 , H04N19/176 , H04N19/56
CPC classification number: H04N19/513 , H04N19/105 , H04N19/119 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/56
Abstract: In an exemplary embodiment, in order to avoid enlargement of a circuit scale to perform coding processing in real time, a block size of a PU (evaluation PU (Prediction Unit)) used to evaluate a merge mode is restricted and the number of evaluation target merge candidates is restricted. In the case where the evaluation PU has the block size in which a CU (Cording Unit) is divided, at least one merge candidate common to a merge candidate list of a PU (inclusion PU) having the block size including the evaluation PU and a merge candidate list of each of a plurality of evaluation PUs is selected as the evaluation target merge candidate from the merge candidate lists of the evaluation PUs. In performing cost evaluation processing for the evaluation PU, cost evaluation processing is simultaneously performed on the inclusion PU using a calculated prediction residual.
Abstract translation: 在一个示例性实施例中，为了避免放大电路规模以实时执行编码处理，用于评估合并模式的PU（评估PU（预测单元））的块大小被限制，并且评估目标的数量 合并候选人受到限制。 在评价PU具有划分CU（Cording Unit）的块大小的情况下，具有包含评估PU的块大小的PU（包含PU）的合并候选列表的公共的至少一个合并候选和 从评估PU的合并候选列表中选择多个评估PU中的每一个的合并候选列表作为评估对象合并候选。 在进行评价用PU的成本评价处理中，使用计算出的预测残差，对包含PU同时进行成本评价处理。
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公开(公告)号：US20150271485A1
公开(公告)日：2015-09-24
申请号：US14619993
申请日：2015-02-11
Inventor： Kazuma SAKAKIBARA , Kiyofumi ABE , Naoki YOSHIMATSU , Hideyuki OHGOSE , Koji ARIMURA , Hiroshi ARAKAWA , Kazuhito KIMURA
IPC: H04N19/103 , H04N19/124 , H04N19/61
CPC classification number: H04N19/103 , H04N19/124 , H04N19/593 , H04N19/61
Abstract: An image encoding method includes: selecting, for each processing block, one of intra prediction modes specified by a coding standard, and performing intra prediction according to the intra prediction mode, wherein the intra prediction modes include a lower-left reference mode in which a processing block located at lower left of a current processing block is referred to, the processing blocks include a first processing block and a second processing block located at upper right of the first processing block, the second processing block being equal in size to the first processing block, the coding standard defines that information on the second processing block is written into a bitstream after information on the first processing block, and in the intra prediction, (i) selection of the lower-left reference mode is prohibited and intra prediction is performed on the second processing block, and, (ii) intra prediction is performed on the first processing block.
Abstract translation: 图像编码方法包括：对于每个处理块，选择由编码标准指定的帧内预测模式之一，并根据帧内预测模式进行帧内预测，其中帧内预测模式包括左下参考模式，其中 参考当前处理块的左下方的处理块，处理块包括位于第一处理块的右上方的第一处理块和第二处理块，第二处理块的大小与第一处理相同 编码标准定义了关于第一处理块的信息之后的第二处理块上的信息被写入到比特流中，并且在帧内预测中，（i）禁止左下参考模式的选择并执行帧内预测 在第二处理块上，并且（ii）对第一处理块执行帧内预测。
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公开(公告)号：US20170366815A1
公开(公告)日：2017-12-21
申请号：US15690645
申请日：2017-08-30
Inventor： Hiroshi ARAKAWA , Kiyofumi ABE , Kazuhito KIMURA , Hideyuki OHGOSE , Koji ARIMURA , Kazuma SAKAKIBARA
IPC: H04N19/159 , H04N19/107 , H04N19/119 , H04N19/176
CPC classification number: H04N19/159 , H04N19/107 , H04N19/119 , H04N19/176
Abstract: A video coding apparatus is a video coding apparatus which codes a coding target video based on a coding standard, and includes: a dividing unit which divides an image included in the coding target video into a plurality of control blocks; and a prediction image generating unit which divides each of the control blocks into a plurality of prediction blocks, and generates, for each of the prediction blocks, a prediction image using one of inter prediction and intra prediction, wherein the coding standard allows each of the control blocks to be divided into the prediction blocks such that the prediction blocks have different sizes, and the prediction image generating unit divides each of the control blocks into the prediction blocks such that the prediction blocks all have an identical size, rather than dividing each of the control blocks into the prediction blocks such that the prediction blocks have different sizes.
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Patent Agency Ranking
公开(公告)号：US20160021374A1
公开(公告)日：2016-01-21
申请号：US14800643
申请日：2015-07-15
Inventor： Yuki MARUYAMA , Kiyofumi ABE , Hideyuki OHGOSE , Koji ARIMURA , Hiroshi ARAKAWA , Kazuma SAKAKIBARA , Kazuhito KIMURA
IPC: H04N19/136 , H04N19/593 , H04N19/176
CPC classification number: H04N19/159 , H04N19/11 , H04N19/186
Abstract: Provided is an image coding method which obtains a picture, and codes the obtained picture. The image coding method generates a processing block, performs a first intra prediction that selects one intra prediction mode from a first set of candidates based on a component of a first signal contained in the processing block, performs a second intra prediction that selects one intra prediction mode from a second set of candidates based on a component of a second signal contained in the processing block. The first set of candidates includes a plurality of intra prediction modes, and the second set of candidates includes an intra prediction mode, having no dependency between the second intra prediction and the first intra prediction, of the plurality of intra prediction modes. The first intra prediction and the second intra prediction are performed in parallel.
Abstract translation: 提供一种图像编码方法，其获得图像，并对获得的图像进行编码。 图像编码方法根据包含在处理块中的第一信号的分量，生成处理块，执行从第一候选集合中选择一个帧内预测模式的第一帧内预测，执行选择一个帧内预测的第二帧内预测 模式从基于包含在处理块中的第二信号的分量的第二组候选。 第一候选项包括多个帧内预测模式，并且第二候选组包括多个帧内预测模式中不具有第二帧内预测和第一帧内预测之间的依赖关系的帧内预测模式。 并行执行第一帧内预测和第二帧内预测。
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公开(公告)号：US20150222906A1
公开(公告)日：2015-08-06
申请号：US14611871
申请日：2015-02-02
Inventor： Hiroshi ARAKAWA , Kiyofumi ABE , Kazuhito KIMURA , Hideyuki OHGOSE , Koji ARIMURA , Kazuma SAKAKIBARA
IPC: H04N19/159 , H04N19/91 , H04N19/119 , H04N19/105 , H04N19/176
CPC classification number: H04N19/159 , H04N19/107 , H04N19/119 , H04N19/176
Abstract: A video coding apparatus is a video coding apparatus which codes a coding target video based on a coding standard, and includes: a dividing unit which divides an image included in the coding target video into a plurality of control blocks; and a prediction image generating unit which divides each of the control blocks into a plurality of prediction blocks, and generates, for each of the prediction blocks, a prediction image using one of inter prediction and intra prediction, wherein the coding standard allows each of the control blocks to be divided into the prediction blocks such that the prediction blocks have different sizes, and the prediction image generating unit divides each of the control blocks into the prediction blocks such that the prediction blocks all have an identical size, rather than dividing each of the control blocks into the prediction blocks such that the prediction blocks have different sizes.
Abstract translation: 视频编码装置是根据编码标准对编码对象视频进行编码的视频编码装置，包括：分割部，将包含在编码对象视频中的图像分割为多个控制块; 以及预测图像生成单元，其将每个所述控制块分割为多个预测块，并且对于每个所述预测块，使用帧间预测和帧内预测之一来生成预测图像，其中，所述编码标准允许 控制块被划分为预测块，使得预测块具有不同的大小，并且预测图像生成单元将每个控制块划分为预测块，使得预测块全部具有相同的大小，而不是将每个 控制块进入预测块，使得预测块具有不同的大小。
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公开(公告)号：US20150208090A1
公开(公告)日：2015-07-23
申请号：US14673816
申请日：2015-03-30
Inventor： Kazuma SAKAKIBARA , Kiyofumi ABE , Hideyuki OHGOSE , Koji ARIMURA , Hiroshi ARAKAWA , Kazuhito KIMURA
IPC: H04N19/593 , H04N19/182 , H04N19/176 , H04N19/11
CPC classification number: H04N19/593 , H04N19/105 , H04N19/11 , H04N19/14 , H04N19/176 , H04N19/182
Abstract: An image encoding apparatus which encodes an input image includes: an intra prediction unit which performs intra prediction on a per-sub-block basis. The intra prediction unit includes: a size determining unit which determines whether the size of a current sub-block is less than or equal to a predetermined size; a candidate determining unit which determines m intra prediction modes (where m is a natural number) as candidate prediction modes when the size of the current sub-block is determined to be less than or equal to the predetermined size, the m intra prediction modes being less than M intra prediction modes predefined independently of the block size (where M is a natural number greater than or equal to 2); and a prediction unit which selects one of the candidate prediction modes and performs intra prediction on the current sub-block using the selected intra prediction mode.
Abstract translation: 对输入图像进行编码的图像编码装置包括：帧内预测单元，其基于每个子块进行帧内预测。 帧内预测单元包括：尺寸确定单元，其确定当前子块的尺寸是否小于或等于预定尺寸; 当确定当前子块的尺寸小于或等于预定大小时，将m个帧内预测模式（其中m是自然数）确定为候选预测模式的候选确定单元，m个帧内预测模式 小于M个帧预测模式，独立于块大小（其中M是大于或等于2的自然数）; 以及预测单元，其使用所选择的帧内预测模式来选择候选预测模式之一并对当前子块执行帧内预测。
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公开(公告)号：US20190156392A1
公开(公告)日：2019-05-23
申请号：US16253753
申请日：2019-01-22
Inventor： Kiyofumi ABE , Kazuhito KIMURA , Hideyuki OHGOSE , Hiroshi ARAKAWA , Koji ARIMURA , Kazuma SAKAKIBARA
Abstract: A video coding apparatus including a dividing part that outputs the coding target picture divided for each coding unit (basic CU); a prediction processor that generates a prediction image by performing one of intra prediction and inter-screen prediction; a difference calculator that generates a difference image by calculating a difference between the generated prediction image and an image corresponding to the prediction image in the coding target picture; a residual coder that generates a residual coefficient by performing transform processing and quantization processing on the generated difference image; an integration unit that integrates a plurality of basic CUs included in an N×N-pixel region into one new CU, and a code string generator that generates a code string corresponding to the post-integration new CU by performing variable-length coding and arithmetic coding on coding information and the residual coefficient.
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公开(公告)号：US20150256851A1
公开(公告)日：2015-09-10
申请号：US14641086
申请日：2015-03-06
Inventor： Kiyofumi ABE , Kazuhito KIMURA , Hideyuki OHGOSE , Hiroshi ARAKAWA , Koji ARIMURA , Kazuma SAKAKIBARA
IPC: H04N19/593 , H04N19/61 , H04N19/124 , H04N19/51
CPC classification number: H04N19/593 , H04N19/124 , H04N19/51 , H04N19/61
Abstract: A video coding apparatus including a dividing part that outputs the coding target picture divided for each coding unit (basic CU); a prediction processor that generates a prediction image by performing one of intra prediction and inter-screen prediction; a difference calculator that generates a difference image by calculating a difference between the generated prediction image and an image corresponding to the prediction image in the coding target picture; a residual coder that generates a residual coefficient by performing transform processing and quantization processing on the generated difference image; an integration unit that integrates a plurality of basic CUs included in an N×N-pixel region into one new CU, and a code string generator that generates a code string corresponding to the post-integration new CU by performing variable-length coding and arithmetic coding on coding information and the residual coefficient.
Abstract translation: 一种视频编码装置，包括：输出针对每个编码单元划分的编码目标图像的分割部分（基本CU）; 预测处理器，其通过执行帧内预测和画面间预测之一来生成预测图像; 差分计算器，其通过计算所生成的预测图像和与编码对象图像中的预测图像对应的图像之间的差异来生成差分图像; 剩余编码器，通过对生成的差分图像进行变换处理和量化处理来产生残差系数; 将包括在N×N像素区域中的多个基本CU集成到一个新CU中的集成单元，以及通过执行可变长度编码和算术来生成与后整合新CU对应的代码串的代码串生成器 对编码信息进行编码和剩余系数。
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