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公开(公告)号：US11039164B2
公开(公告)日：2021-06-15
申请号：US16799354
申请日：2020-02-24
Inventor： Jing Ya Li , Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Han Boon Teo , Kiyofumi Abe , Tadamasa Toma , Takahiro Nishi
IPC: H04N19/00 , H04N19/52 , H04N19/12 , H04N19/174 , H04N19/182
Abstract: An encoder includes circuitry and memory connected to the circuitry. In operation, the circuitry: corrects a base motion vector using a correction value for correcting the base motion vector in a predetermined direction; and encodes a current partition to be encoded in an image of a video, using the base motion vector corrected. The correction value is specified by a first parameter and a second parameter, the first parameter indicating a table to be selected from among a plurality of tables each including values, the second parameter indicating one of the values included in the table to be selected indicated by the first parameter. In each of the plurality of tables, a smaller value among the values is assigned a smaller index. Each of the plurality of tables includes a different minimum value among the values.
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公开(公告)号：US12238328B2
公开(公告)日：2025-02-25
申请号：US18514809
申请日：2023-11-20
Inventor： Jing Ya Li , Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Han Boon Teo , Kiyofumi Abe , Tadamasa Toma , Takahiro Nishi
IPC: H04N19/52 , H04N19/12 , H04N19/174 , H04N19/182
Abstract: An encoder includes circuitry and memory connected to the circuitry. In operation, the circuitry: corrects a base motion vector using a correction value for correcting the base motion vector in a predetermined direction; and encodes a current partition to be encoded in an image of a video, using the base motion vector corrected. The correction value is specified by a first parameter and a second parameter, the first parameter indicating a table to be selected from among a plurality of tables each including values, the second parameter indicating one of the values included in the table to be selected indicated by the first parameter. In each of the plurality of tables, a smaller value among the values is assigned a smaller index. Each of the plurality of tables includes a different minimum value among the values.
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公开(公告)号：US12184852B2
公开(公告)日：2024-12-31
申请号：US18530032
申请日：2023-12-05
Inventor： Sughosh Pavan Shashidhar , Hai Wei Sun , Chong Soon Lim , Ru Ling Liao , Han Boon Teo , Jing Ya Li , Takahiro Nishi , Kiyofumi Abe , Ryuichi Kanoh , Tadamasa Toma
IPC: H04N11/02 , H04N19/119 , H04N19/176 , H04N19/184 , H04N19/60
Abstract: An encoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, determines whether or not a ternary split process of splitting a block into three sub blocks in a first direction parallel to a first longer side of the block is allowed by comparing a size of a second shorter side of the block to a minimum threshold value. The circuitry, responsive to the ternary split process being allowed, writes, into a bitstream, a split direction parameter indicative of a splitting direction. The circuitry, in operation, splits the block into a plurality of sub blocks in a direction indicated by the split direction parameter; and encodes the plurality of sub blocks. The minimum threshold value corresponds to a minimum size supported in a transform process.
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公开(公告)号：US12167007B2
公开(公告)日：2024-12-10
申请号：US17675444
申请日：2022-02-18
Inventor： Jing Ya Li , Chong Soon Lim , Han Boon Teo , Che-Wei Kuo , Hai Wei Sun , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Yusuke Kato
IPC: H04N19/423 , H04N19/172 , H04N19/174 , H04N19/70
Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry encodes second information indicating whether first information is present in a bitstream, the first information being regarding a subpicture which is a rectangular region in a picture, the picture including slices, and when the second information indicates that the first information is present in the bitstream, each of the slices is a rectangular slice and has a subpicture index indicating a subpicture to which the slice belongs.
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85.发明公开公开(公告)号：US20240364916A1
公开(公告)日：2024-10-31
申请号：US18768349
申请日：2024-07-10
Inventor： Kiyofumi ABE , Takahiro Nishi , Tadamasa Toma , Ryuichi Kanoh , Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Sughosh Pavan Shashidhar , Han Boon Teo , Jing Ya Li
IPC: H04N19/513 , H04N19/132 , H04N19/176 , H04N19/563
CPC classification number: H04N19/513 , H04N19/132 , H04N19/176 , H04N19/563
Abstract: The present disclosure provides systems and methods for video coding. The systems include, for example, an image encoder comprising: circuitry; and a memory coupled to the circuitry, wherein the circuitry, in operation, performs the following: predicting a first block of prediction samples for a current block of a picture, wherein predicting the first block of prediction samples includes at least a prediction process with a motion vector from a different picture; padding the first block of prediction samples to form a second block of prediction samples, wherein the second block is larger than the first block; calculating at least a gradient using the second block of prediction samples; and encoding the current block using at least the calculated gradient.
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Patent Agency Ranking
公开(公告)号：US12126795B2
公开(公告)日：2024-10-22
申请号：US17943971
申请日：2022-09-13
Inventor： Ru Ling Liao , Chong Soon Lim , Hai Wei Sun , Han Boon Teo , Jing Ya Li , Sughosh Pavan Shashidhar , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46
CPC classification number: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46
Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. The circuitry, in operation, stores a first parameter into a bitstream, the first parameter indicating, as a prediction mode, one of (i) a multiple prediction mode in which a prediction image is generated by overlapping an inter prediction image of a current block and an intra prediction image of the current block and (ii) one of a plurality of prediction modes including a non-rectangular mode in which a prediction image is generated for each non-rectangular partition in the current block, and encodes the current block according to the prediction mode.
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公开(公告)号：US12088791B2
公开(公告)日：2024-09-10
申请号：US17946784
申请日：2022-09-16
Inventor： Ru Ling Liao , Chong Soon Lim , Hai Wei Sun , Han Boon Teo , Jing Ya Li , Sughosh Pavan Shashidhar , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46
CPC classification number: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46
Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. The circuitry, in operation, stores a first parameter into a bitstream, the first parameter indicating, as a prediction mode, one of (i) a multiple prediction mode in which a prediction image is generated by overlapping an inter prediction image of a current block and an intra prediction image of the current block and (ii) one of a plurality of prediction modes including a non-rectangular mode in which a prediction image is generated for each non-rectangular partition in the current block, and encodes the current block according to the prediction mode.
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公开(公告)号：US20240297986A1
公开(公告)日：2024-09-05
申请号：US18657222
申请日：2024-05-07
Inventor： Ru Ling LIAO , Chong Soon Lim , Jing Ya Li , Han Boon Teo , Hai Wei Sun , Che Wei Kuo , Yusuke Kato , Tadamasa Toma , Kiyofumi Abe , Takahiro Nishi
IPC: H04N19/107 , H04N19/176
CPC classification number: H04N19/107 , H04N19/176
Abstract: An image encoder includes: circuitry; and a memory coupled to the circuitry. The circuitry, in operation: calculates first values of a current block using intra prediction, the intra prediction being limited to planar mode, the planar mode using multiple reference pixels for each pixel location of the current block; calculates second values of the current block using inter prediction; calculates third values of the current block by weighting the first values and the second values; and encodes the current block using the third values, and in the calculating of the third values, a first weight is applied to the first values and a second weight is applied to the second values, the second weight being different from the first weight.
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89.发明授权公开(公告)号：US12081748B2
公开(公告)日：2024-09-03
申请号：US17868199
申请日：2022-07-19
Inventor： Han Boon Teo , Hai Wei Sun , Chong Soon Lim , Jing Ya Li , Chu Tong Wang , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/117 , H04N19/105 , H04N19/46 , H04N19/80
CPC classification number: H04N19/117 , H04N19/105 , H04N19/46 , H04N19/80
Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry: executes a second process of applying a second filter to the first image to generate a second image, not holding the second image as a reference image, holding the first image as a reference image, and displaying the second image; writes coefficients of each of one or more filter candidates that are candidates for the second filter into a bitstream, wherein the coefficients are included in a first storage location when written into the bitstream; and writes a parameter that specifies, for each image, one of the one or more filter candidates as the second filter into the bitstream, wherein the parameter is included in a second storage location when written into the bitstream, and the second storage location is different from the first storage location.
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90.发明授权公开(公告)号：US12063383B2
公开(公告)日：2024-08-13
申请号：US18103567
申请日：2023-01-31
Inventor： Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Ryuichi Kanoh , Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Sughosh Pavan Shashidhar , Han Boon Teo , Jing Ya Li
IPC: H04N19/513 , H04N19/132 , H04N19/176 , H04N19/563
CPC classification number: H04N19/513 , H04N19/132 , H04N19/176 , H04N19/563
Abstract: The present disclosure provides systems and methods for video coding. The systems include, for example, an image encoder comprising: circuitry; and a memory coupled to the circuitry, wherein the circuitry, in operation, performs the following: predicting a first block of prediction samples for a current block of a picture, wherein predicting the first block of prediction samples includes at least a prediction process with a motion vector from a different picture; padding the first block of prediction samples to form a second block of prediction samples, wherein the second block is larger than the first block; calculating at least a gradient using the second block of prediction samples; and encoding the current block using at least the calculated gradient.
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