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公开(公告)号：US12166983B2
公开(公告)日：2024-12-10
申请号：US18531574
申请日：2023-12-06
Inventor： Chong Soon Lim , Hai Wei Sun , Sughosh Pavan Shashidhar , Han Boon Teo , Ru Ling Liao , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/119 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/463 , H04N19/96
Abstract: An image encoder/decoder includes circuitry and a memory coupled to the circuitry. When a geometry of a block of a picture satisfies a first condition, the circuitry splits the block of the picture into sub blocks having a first set of geometries. When the geometry of the block does not satisfy the first condition, the circuitry splits the block of the picture into sub blocks having a second set of geometries, the second set of geometries being different from the first set of geometries. The circuitry encodes/decodes the sub blocks of the block.
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公开(公告)号：US12160600B2
公开(公告)日：2024-12-03
申请号：US18331800
申请日：2023-06-08
Inventor： Chong Soon Lim , Sughosh Pavan Shashidhar , Ru Ling Liao , Hai Wei Sun , Han Boon Teo , Jing Ya Li , Kiyofumi Abe , Tadamasa Toma , Takahiro Nishi
IPC: H04N19/44 , H04N19/119 , H04N19/137 , H04N19/159 , H04N19/176
Abstract: An image decoder has circuitry coupled to a memory. The circuitry splits a current image block into a plurality of partitions. The circuitry predicts a first motion vector from a set of uni-prediction motion vector candidates for a first partition of the plurality of partitions, and decodes the first partition using the first motion vector.
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公开(公告)号：US12108073B2
公开(公告)日：2024-10-01
申请号：US18217840
申请日：2023-07-03
Inventor： Jing Ya Li , Chong Soon Lim , Ru Ling Liao , Han Boon Teo , Hai Wei Sun , Che Wei Kuo , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/00 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/513
CPC classification number: H04N19/513 , H04N19/139 , H04N19/159 , H04N19/176
Abstract: Provided is an encoder including circuitry and memory coupled to the circuitry. A prediction mode for a current block is an affine mode, and in operation, the circuitry: derives a base motion vector which is a motion vector to be used in a prediction process for the current block, and is a motion vector at an affine-mode control point in the current block; derives a first motion vector different from the base motion vector; derives a motion vector difference based on a difference between the base motion vector and the first motion vector; determines whether the motion vector difference is greater than a threshold; if so, modifies a second motion vector different from the base motion vector and the first motion vector, and if not, does not modify the second motion vector; and encodes the current block using the second motion vector modified or the second motion vector not modified.
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公开(公告)号：US12022063B2
公开(公告)日：2024-06-25
申请号：US17332132
申请日：2021-05-27
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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公开(公告)号：US11985350B2
公开(公告)日：2024-05-14
申请号：US17373106
申请日：2021-07-12
Inventor： Chong Soon Lim , Han Boon Teo , Takahiro Nishi , Tadamasa Toma , Ru Ling Liao , Sughosh Pavan Shashidhar , Hai Wei Sun
IPC: H04N19/597 , G06T5/80 , H04N5/00 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/85
CPC classification number: H04N19/597 , G06T5/80 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/85
Abstract: An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.
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Patent Agency Ranking
公开(公告)号：US11909968B2
公开(公告)日：2024-02-20
申请号：US17726133
申请日：2022-04-21
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: H04N19/52 , H04N19/119 , H04N19/137 , H04N19/176
CPC classification number: H04N19/119 , H04N19/137 , H04N19/176 , H04N19/52
Abstract: Provided is an encoder which includes circuitry and memory. Using the memory, the circuitry splits an image block into a plurality of partitions, obtains a prediction image for a partition, and encodes the image block using the prediction image. When the partition is not a non-rectangular partition, the circuitry obtains (i) a first prediction image for the partition, (ii) a gradient image for the first prediction image, and (iii) a second prediction image as the prediction image using the first prediction image and the gradient image. When the partition is a non-rectangular partition, the circuitry obtains the first prediction image as the prediction image without using the gradient image.
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公开(公告)号：US11895298B2
公开(公告)日：2024-02-06
申请号：US17724178
申请日：2022-04-19
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: H04N19/52 , H04N19/119 , H04N19/137 , H04N19/176
CPC classification number: H04N19/119 , H04N19/137 , H04N19/176 , H04N19/52
Abstract: Provided is an encoder which includes circuitry and memory. Using the memory, the circuitry splits an image block into a plurality of partitions, obtains a prediction image for a partition, and encodes the image block using the prediction image. When the partition is not a non-rectangular partition, the circuitry obtains (i) a first prediction image for the partition, (ii) a gradient image for the first prediction image, and (iii) a second prediction image as the prediction image using the first prediction image and the gradient image. When the partition is a non-rectangular partition, the circuitry obtains the first prediction image as the prediction image without using the gradient image.
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公开(公告)号：US11889075B2
公开(公告)日：2024-01-30
申请号：US17726125
申请日：2022-04-21
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: H04N19/119 , H04N19/176
CPC classification number: H04N19/119 , H04N19/176
Abstract: Provided is an encoder which includes circuitry and memory. The circuitry encodes an image block using the memory. In encoding the image block, the circuitry: obtains one or more size parameters related to a size of the image block; determines whether the one or more size parameters and one or more thresholds satisfy a determined relationship; encodes a split parameter when the one or more size parameters and the one or more thresholds are determined to satisfy the determined relationship, the split parameter indicating whether the image block is to be split into a plurality of partitions including a non-rectangular partition; and encodes the image block after splitting the image block into the plurality of partitions when the split parameter indicates that the image block is to be split into the plurality of partitions.
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公开(公告)号：US11876963B2
公开(公告)日：2024-01-16
申请号：US17725113
申请日：2022-04-20
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: H04N19/119 , H04N19/176
CPC classification number: H04N19/119 , H04N19/176
Abstract: Provided is an encoder which includes circuitry and memory. The circuitry encodes an image block using the memory. In encoding the image block, the circuitry: obtains one or more size parameters related to a size of the image block; determines whether the one or more size parameters and one or more thresholds satisfy a determined relationship; encodes a split parameter when the one or more size parameters and the one or more thresholds are determined to satisfy the determined relationship, the split parameter indicating whether the image block is to be split into a plurality of partitions including a non-rectangular partition; and encodes the image block after splitting the image block into the plurality of partitions when the split parameter indicates that the image block is to be split into the plurality of partitions.
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公开(公告)号：US11825084B2
公开(公告)日：2023-11-21
申请号：US17724178
申请日：2022-04-19
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: H04N19/52 , H04N19/119 , H04N19/137 , H04N19/176
CPC classification number: H04N19/119 , H04N19/137 , H04N19/176 , H04N19/52
Abstract: Provided is an encoder which includes circuitry and memory. Using the memory, the circuitry splits an image block into a plurality of partitions, obtains a prediction image for a partition, and encodes the image block using the prediction image. When the partition is not a non-rectangular partition, the circuitry obtains (i) a first prediction image for the partition, (ii) a gradient image for the first prediction image, and (iii) a second prediction image as the prediction image using the first prediction image and the gradient image. When the partition is a non-rectangular partition, the circuitry obtains the first prediction image as the prediction image without using the gradient image.
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