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公开(公告)号：US10148965B2
公开(公告)日：2018-12-04
申请号：US15058691
申请日：2016-03-02
Inventor： Kiyofumi Abe , Hideyuki Ohgose , Hiroshi Arakawa , Koji Arimura , Kazuma Sakakibara
IPC: H04N19/105 , H04N19/159 , H04N19/172 , H04N19/423
Abstract: A moving image coding apparatus is a moving image coding apparatus which codes a moving image, and includes a storage unit in which a plurality of reference pictures is stored; and a coding unit which codes a plurality of coding target pictures. The coding unit codes as a B picture a specific coding target picture among the plurality of coding target pictures by using a first reference picture list and a second reference picture list. The first reference picture list includes only one long-term reference picture ahead of the specific coding target picture among the plurality of reference pictures in a display order. The second reference picture list includes only one short-term reference picture ahead of the specific coding target picture among the plurality of reference pictures in the display order.
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公开(公告)号：US10225576B2
公开(公告)日：2019-03-05
申请号：US14641086
申请日：2015-03-06
Inventor： Kiyofumi Abe , Kazuhito Kimura , Hideyuki Ohgose , Hiroshi Arakawa , Koji Arimura , Kazuma Sakakibara
IPC: H04N19/61 , H04N19/593 , H04N19/51 , H04N19/124
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：US09866841B2
公开(公告)日：2018-01-09
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: H04N19/159 , H04N19/186 , H04N19/11
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.
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公开(公告)号：US09473787B2
公开(公告)日：2016-10-18
申请号：US14660419
申请日：2015-03-17
Inventor： Koji Arimura , Kazuhito Kimura , Hideyuki Ohgose , Hiroshi Arakawa , Kiyofumi Abe , Kazuma Sakakibara
IPC: H04N7/12 , H04N11/02 , H04N11/04 , H04N19/513 , H04N19/56 , H04N19/172 , H04N19/176
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：US10212442B2
公开(公告)日：2019-02-19
申请号：US15293759
申请日：2016-10-14
Inventor： Toshihiko Kusakabe , Kiyofumi Abe , Hideyuki Ohgose , Shinji Kitamura , Takashi Hashimoto , Yuki Maruyama , Tatsuro Juri
IPC: H04B1/66 , H04N19/436 , H04N19/70
Abstract: The image encoding apparatus which encodes, on a per block basis, a current picture included in a moving picture includes: an encoder which outputs a first encoded stream including, in the following arrangement order, (i) slice data obtained by encoding a slice included in the current picture and including a plurality of block lines and (ii) a slice header including information indicating a code amount of each of the plurality of block lines; and an exchanger which exchanges arrangement positions of the slice data and the slice header in the first encoded stream.
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Patent Agency Ranking
公开(公告)号：US10116945B2
公开(公告)日：2018-10-30
申请号：US15298603
申请日：2016-10-20
Inventor： Kiyofumi Abe , Hideyuki Ohgose , Shinji Kitamura , Takashi Hashimoto , Toshihiko Kusakabe , Yuki Maruyama , Tatsuro Juri
IPC: H04N19/174 , H04N19/196 , H04N19/159 , H04N19/115
Abstract: A moving picture encoding apparatus encodes a moving picture having an interlaced structure, and includes: a storage which stores fields as reference pictures; and an encoder which encodes a current field as a B-picture, using a first reference picture list which includes only one field in a same parity as the current field, and a second reference picture list which includes only one field in an opposite parity to the current field.
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公开(公告)号：US09781434B2
公开(公告)日：2017-10-03
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 , H04N19/105 , H04N19/176 , H04N19/119 , H04N19/107 , H04N19/70
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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公开(公告)号：US11356663B2
公开(公告)日：2022-06-07
申请号：US17018320
申请日：2020-09-11
Inventor： Toshihiko Kusakabe , Shinji Kitamura , Takashi Hashimoto , Kiyofumi Abe , Hideyuki Ohgose
IPC: H04N19/117 , H04N19/119 , H04N19/174 , H04N19/176 , H04N19/82
Abstract: An encoder which encodes a picture includes processing circuitry and memory. Using the memory, the processing circuitry: splits the picture into a plurality of slice segments; encodes a plurality of blocks included in each of the plurality of slice segments; reconstructs the plurality of blocks encoded; adds, for each of the plurality of slice segments, control information to a header area of the slice segment, the control information being for controlling application of a filter to the slice segment; and applies, for each of the plurality of slice segments, the filter to a block which has been reconstructed in the slice segment, according to the control information of the slice segment.
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公开(公告)号：US11297329B2
公开(公告)日：2022-04-05
申请号：US16382919
申请日：2019-04-12
Inventor： Toshihiko Kusakabe , Shinji Kitamura , Kiyofumi Abe , Hideyuki Ohgose , Takashi Hashimoto
IPC: H04N19/146 , H04N19/176 , H04N19/174 , H04N19/119 , H04N19/15 , H04N19/169
Abstract: Provided is an image encoding method which inhibits deterioration in processing performance for encoding while improving transmission efficiency. The image encoding method is for generating a bitstream by encoding a picture, and includes: sequentially encoding blocks included in the picture; deriving an encoding amount of a slice segment each time one of the blocks is encoded as a current block, the slice segment including the current block; determining whether the encoding amount derived is at least a threshold; and setting end information indicating an end of the slice segment in a position in the bitstream when the encoding amount is determined to be at least the threshold, the position corresponding to the current block encoded.
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公开(公告)号：US10237561B2
公开(公告)日：2019-03-19
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 , H04N19/176 , H04N19/119 , H04N19/107
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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