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公开(公告)号：US12132927B2
公开(公告)日：2024-10-29
申请号：US17219065
申请日：2021-03-31
IPC分类号： H04N19/513 , H04N19/105 , H04N19/109 , H04N19/119 , H04N19/124 , H04N19/137 , H04N19/139 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/96
CPC分类号： H04N19/521 , H04N19/105 , H04N19/109 , H04N19/119 , H04N19/124 , H04N19/137 , H04N19/139 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/96
摘要： According to one embodiment, an image encoding method includes selecting a motion reference block from an already-encoded pixel block. The method includes selecting an available block including different motion information from the motion reference block, and selecting a selection block from the available block. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information identifying the selection block by referring to a code table decided according to a number of the available block.
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公开(公告)号：US11997302B2
公开(公告)日：2024-05-28
申请号：US17591127
申请日：2022-02-02
IPC分类号： H04N19/50 , H04N21/236 , H04N21/2365
CPC分类号： H04N19/50 , H04N21/23602 , H04N21/2365
摘要： According to an embodiment, an encoding device includes an encoder. The encoder is configured to generate a video stream. The video stream includes at least a first image group including a plurality of images encoded at a first bit rate and a second image group including a plurality of images. The first image group includes an intra-coded image. The plurality of images of the second image group are associated with the intra-coded image serving as a reference image to decode an inter-coded image, and are encoded at a second bit rate different from the first bit rate and having reproduction timing in synchronization with the plurality of images of the first image group.
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公开(公告)号：US11483570B2
公开(公告)日：2022-10-25
申请号：US16858002
申请日：2020-04-24
IPC分类号： G06K9/36 , H04N19/159 , H04N19/126 , H04N19/186 , H04N19/94 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/172 , H04N19/136 , H04N19/463
摘要： According to an embodiment, an encoding device includes an index setting unit and an encoding unit. The index setting unit generates a common index in which reference indices of one or more reference images included in a first index and a second index are sorted in a combination so as not to include a same reference image in accordance with a predetermined scanning order. The first index representing a combination of the one or more reference images referred to by a first reference image. The second index representing a combination of the one or more reference images referred to by a second reference image. The encoding unit encodes the common index.
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4.发明授权公开(公告)号：US11451808B2
公开(公告)日：2022-09-20
申请号：US16866249
申请日：2020-05-04
发明人： Takeshi Chujoh , Tomoo Yamakage
IPC分类号： G06K9/36 , H04N19/44 , H04N19/513 , H04N19/117 , H04N19/186 , H04N19/523 , H04N19/59 , G06T9/00 , H04N19/136 , H04N19/137 , H04N19/52 , H04N19/567
摘要： According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
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公开(公告)号：US11425396B2
公开(公告)日：2022-08-23
申请号：US16857910
申请日：2020-04-24
IPC分类号： G06K9/36 , H04N19/159 , H04N19/126 , H04N19/186 , H04N19/94 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/172 , H04N19/136 , H04N19/463
摘要： According to an embodiment, an encoding device includes an index setting unit and an encoding unit. The index setting unit generates a common index in which reference indices of one or more reference images included in a first index and a second index are sorted in a combination so as not to include a same reference image in accordance with a predetermined scanning order. The first index representing a combination of the one or more reference images referred to by a first reference image. The second index representing a combination of the one or more reference images referred to by a second reference image. The encoding unit encodes the common index.
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公开(公告)号：US11356674B2
公开(公告)日：2022-06-07
申请号：US16858053
申请日：2020-04-24
IPC分类号： G06K9/36 , H04N19/159 , H04N19/126 , H04N19/186 , H04N19/94 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/172 , H04N19/136 , H04N19/463
摘要： According to an embodiment, an encoding device includes an index setting unit and an encoding unit. The index setting unit generates a common index in which reference indices of one or more reference images included in a first index and a second index are sorted in a combination so as not to include a same reference image in accordance with a predetermined scanning order. The first index representing a combination of the one or more reference images referred to by a first reference image. The second index representing a combination of the one or more reference images referred to by a second reference image. The encoding unit encodes the common index.
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7.发明授权公开(公告)号：US11202075B2
公开(公告)日：2021-12-14
申请号：US16791917
申请日：2020-02-14
发明人： Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： H04N19/13 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/147 , H04N19/196 , H04N19/463 , H04N19/577 , H04N19/44 , H04N19/513 , H04N19/547 , H04N19/61 , H04N19/625 , H04N19/15 , H04N19/182 , H04N19/184 , H04N19/186
摘要： According to an embodiment, an encoding device includes a deriving unit and an encoding unit. The deriving unit is configured to derive a first reference value based on fixed point precision representing roughness of a weighting factor that is used for multiplying a reference image. The encoding unit is configured to encode a first difference value that is a difference value between the weighting factor and the first reference value and the fixed point precision. The weighting factor is included in a first range of predetermined bit precision having the first reference value at approximate center. The first difference value is in the predetermined range.
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公开(公告)号：US20200296413A1
公开(公告)日：2020-09-17
申请号：US16890734
申请日：2020-06-02
IPC分类号： H04N19/513 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/137 , H04N19/182 , H04N19/109 , H04N19/52 , H04N19/124 , H04N19/15 , H04N19/61
摘要： According to one embodiment, an image encoding method includes selecting a motion reference block from an already-encoded pixel block. The method includes selecting an available block including different motion information from the motion reference block, and selecting a selection block from the available block. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information identifying the selection block by referring to a code table decided according to a number of the available block.
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9.发明授权公开(公告)号：US10609376B2
公开(公告)日：2020-03-31
申请号：US16293916
申请日：2019-03-06
发明人： Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： H04N19/13 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/147 , H04N19/196 , H04N19/463 , H04N19/577 , H04N19/44 , H04N19/513 , H04N19/547 , H04N19/61 , H04N19/625 , H04N19/15 , H04N19/182 , H04N19/184 , H04N19/186
摘要： According to an embodiment, an encoding device includes a deriving unit and an encoding unit. The deriving unit is configured to derive a first reference value based on fixed point precision representing roughness of a weighting factor that is used for multiplying a reference image. The encoding unit is configured to encode a first difference value that is a difference value between the weighting factor and the first reference value and the fixed point precision. The weighting factor is included in a first range of predetermined bit precision having the first reference value at approximate center. The first difference value is in the predetermined range.
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10.发明授权公开(公告)号：US10602173B2
公开(公告)日：2020-03-24
申请号：US16282967
申请日：2019-02-22
发明人： Akiyuki Tanizawa , Takeshi Chujoh
IPC分类号： H04N19/463 , H04N19/105 , H04N19/51 , H04N19/44 , H04N19/182 , H04N19/186 , H04N19/61 , H04N19/91
摘要： According to an embodiment, an encoding device includes: an index setting unit sets an index that represents information of a reference image and a weighting factor; an index reconfiguring unit predicts a reference value of the weighting factor, wherein the reference value indicates a factor to be set if a difference of pixel value between a reference image and a target image to be encoded is less than or equal to a specific value; and an entropy encoding unit encodes a difference value between the weighting factor and the reference value.
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