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公开(公告)号：US11722699B2
公开(公告)日：2023-08-08
申请号：US17726248
申请日：2022-04-21
Inventor： Jing Ya Li , Che Wei Kuo , Chong Soon Lim , Chu Tong Wang , Han Boon Teo , Hai Wei Sun , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Yusuke Kato
IPC: H04N19/66 , H04N19/122 , H04N19/176 , H04N19/103 , H04N19/96
CPC classification number: H04N19/66 , H04N19/122 , H04N19/176 , H04N19/103 , H04N19/96
Abstract: An encoder determines, based on a width and a height of a block, whether or not to disable a prediction mode in which the block is split along a partitioning line defined by a distance and an angle and then prediction is performed; and encodes the block with the prediction mode disabled or not disabled according to a result of the determination on whether or not to disable the prediction mode. Here, the distance is the shortest distance between the center of the block and the partitioning line, and the angle is an angle representing a direction from the center of the block toward the partitioning line in the shortest distance. The encoder determines to disable the prediction mode when (i) a width-to-height ratio is at least 8 or (ii) a height-to-width ratio is at least 8.
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公开(公告)号：US11563969B2
公开(公告)日：2023-01-24
申请号：US17506443
申请日：2021-10-20
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: H04N19/51 , H04N19/176 , H04N19/182
Abstract: An encoder includes circuitry and a memory coupled to the circuitry, wherein the circuitry, in operation, performs a partition process. The partition process includes calculating first values of a set of pixels between a first partition and a second partition in a current block, using a first motion vector for the first partition; calculating second values of the set of pixels, using a second motion vector for the second partition; and calculating third values of the set of pixels by weighting the first values and the second values. When a ratio of a width to a height of the current block is larger than 4 or a ratio of the height to the width of the current block is larger than 4, the circuitry disables the partition process.
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公开(公告)号：US11425424B2
公开(公告)日：2022-08-23
申请号：US16875553
申请日：2020-05-15
Inventor： Chong Soon Lim , Hai Wei Sun , Han Boon Teo , Jing Ya Li , Che-Wei Kuo , Tadamasa Toma , Takahiro Nishi , Kiyofumi Abe , Yusuke Kato
IPC: H04N19/82 , H04N19/119 , H04N19/176 , H04N19/593
Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry determines whether to split a current luma virtual pipeline decoding unit (VPDU) into smaller blocks. When it is determined not to split the current luma VPDU into smaller blocks, the circuitry predicts a block of chroma samples without using luma samples. When it is determined to split the luma VPDU into smaller blocks, the circuitry predicts the block of chroma samples using luma samples. The circuitry encodes the block using the predicted chroma samples.
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公开(公告)号：US11368685B2
公开(公告)日：2022-06-21
申请号：US16942634
申请日：2020-07-29
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 , H04N19/176
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：US11363299B2
公开(公告)日：2022-06-14
申请号：US17116137
申请日：2020-12-09
Inventor： Jing Ya Li , Che Wei Kuo , Chong Soon Lim , Chu Tong Wang , Han Boon Teo , Hai Wei Sun , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Yusuke Kato
IPC: H04N19/66 , H04N19/122 , H04N19/176 , H04N19/103 , H04N19/96
Abstract: An encoder includes circuitry and memory connected to the circuitry, and the circuitry, in operation: determines, based on a width and a height of a block, whether or not to disable a prediction mode in which the block is split along a partitioning line defined by a distance and an angle and then prediction is performed; and encodes the block with the prediction mode disabled or not disabled according to a result of the determination on whether or not to disable the prediction mode. Here, the distance is the shortest distance between the center of the block and the partitioning line, and the angle is an angle representing a direction from the center of the block toward the partitioning line in the shortest distance. The circuitry determines to disable the prediction mode when (i) a width-to-height ratio is at least 8 or (ii) a height-to-width ratio is at least 8.
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Patent Agency Ranking
公开(公告)号：US11134270B2
公开(公告)日：2021-09-28
申请号：US16194586
申请日：2018-11-19
Inventor： Chong Soon Lim , Han Boon Teo , Takahiro Nishi , Tadamasa Toma , Ru Ling Liao , Sughosh Pavan Shashidhar , Hai Wei Sun
IPC: H04N19/597 , H04N19/159 , H04N5/00 , H04N19/46 , H04N19/176 , G06T5/00 , 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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公开(公告)号：US11064200B2
公开(公告)日：2021-07-13
申请号：US16574728
申请日：2019-09-18
Inventor： Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Sughosh Pavan Shashidhar , Han Boon Teo , Takahiro Nishi , Ryuichi Kanoh , Tadamasa Toma
IPC: H04N19/122 , H04N19/103 , H04N19/176 , H04N19/513
Abstract: An encoding apparatus includes: a circuit; and a memory. The circuit, using the memory: writes a first parameter that specifies an arrangement order for a plurality of parameters which includes a second parameter, into a header; writes a second parameter for a block into a bitstream according to the arrangement order wherein the second parameter, when positioned earlier in the arrangement order than later in the arrangement order, is written with less bits; and performs encoding operation for a block using the second parameter.
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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：US10652536B2
公开(公告)日：2020-05-12
申请号：US16417509
申请日：2019-05-20
Inventor： Chong Soon Lim , Hai Wei Sun , Sughosh Pavan Shashidhar , Han Boon Teo , Ru Ling Liao , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/119 , H04N19/176 , H04N19/50 , H04N19/60
Abstract: An encoder according to one aspect of the present disclosure encodes a block of an image, and includes a processor and memory connected to the processor. Using the memory, the processor partitions a block into a plurality of sub blocks and encodes a sub block included in the plurality of sub blocks in an encoding process including at least a transform process or a prediction process. The block is partitioned using a multiple partition including at least three odd-numbered child nodes and each of a width and a height of each of the plurality of sub blocks is a power of two.
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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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