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公开(公告)号：US11303895B2
公开(公告)日：2022-04-12
申请号：US17007416
申请日：2020-08-31
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: H04N19/119 , H04N19/176 , H04N19/423 , H04N19/63
Abstract: An encoder that encodes a current block in a picture includes circuitry and memory. Using the memory, the circuitry: splits the current block into a first sub block, a second sub block, and a third sub block in a first direction, the second sub block being located between the first sub block and the third sub block; prohibits splitting the second sub block into two partitions in the first direction; and encodes the first sub block, the second sub block, and the third sub block.
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公开(公告)号：US11303891B2
公开(公告)日：2022-04-12
申请号：US17090427
申请日：2020-11-05
Inventor： Hideo Saitou , Masato Ohkawa , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/117 , H04N19/176 , G06F17/18
Abstract: An encoder includes circuitry and memory. Using the memory, the circuitry: generates a reconstructed image by encoding and decoding an original image; performs, on a current block included in the reconstructed image, filter processing that is applied to all pixels in the current block, when an edge intensity of the current block is lower than a threshold; and skips the filter processing on the current block when the edge intensity of the current block is higher than the threshold.
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公开(公告)号：US20220094974A1
公开(公告)日：2022-03-24
申请号：US17537930
申请日：2021-11-30
Inventor： Tadamasa Toma , Takahiro Nishi , Kiyofumi Abe , Yusuke Kato
IPC: H04N19/577 , H04N19/513 , H04N19/176
Abstract: Provided is an encoder including: circuitry; and memory coupled to the circuitry. The circuitry: derives a gradient value using a common deriving method shared between a case where a prediction image to be used to encode a current block is generated according to a bi-directional optical flow (BDOF) and a case where the prediction image is generated according to a prediction refinement with optical flow (PROF); and generates the prediction image using the gradient value in both the case where the prediction image is generated according to the BDOF and the case where the prediction image is generated according to the PROF, and in the common deriving method, the gradient value is derived by performing a subtraction process after performing a shift operation process.
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484.发明授权公开(公告)号：US11238648B2
公开(公告)日：2022-02-01
申请号：US16860741
申请日：2020-04-28
Inventor： Tatsuya Koyama , Takahiro Nishi , Toshiyasu Sugio , Tadamasa Toma , Satoshi Yoshikawa , Toru Matsunobu
Abstract: A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
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485.发明授权公开(公告)号：US11218717B2
公开(公告)日：2022-01-04
申请号：US16894020
申请日：2020-06-05
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
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：US11212549B2
公开(公告)日：2021-12-28
申请号：US17101161
申请日：2020-11-23
Inventor： Jing Ya Li , Chong Soon Lim , Ru Ling Liao , Hai Wei Sun , Han Boon Teo , Kiyofumi Abe , Tadamasa Toma , Takahiro Nishi
IPC: H04N19/513 , H04N19/433
Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. In operation, the circuitry: derives a base motion vector to be used in predicting a current block to be encoded; 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; modifies the first motion vector when the motion vector difference is determined to be greater than the threshold, and does not modify the first motion vector when the motion vector difference is determined not to be greater than the threshold; and encodes the current block using the first motion vector modified or the first motion vector not modified.
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公开(公告)号：US11190804B2
公开(公告)日：2021-11-30
申请号：US16664084
申请日：2019-10-25
Inventor： Takahiro Nishi , Tadamasa Toma , Kiyofumi Abe , Ryuichi Kanoh , Luca Rigazio , Alec Hodgkinson
IPC: H04N19/61 , H04N19/503
Abstract: The encoder includes processing circuitry, and memory. Using the memory, the processing circuitry: generates a predicted image of an input image that is a current image to be encoded, based on generated data output from a generator network in response to a reference image being input to the generator network, the generator network being a neural network; calculates a prediction error by subtracting the predicted image from the input image; and generates an encoded image by at least transforming the prediction error.
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公开(公告)号：US20210344906A1
公开(公告)日：2021-11-04
申请号：US17374085
申请日：2021-07-13
Inventor： Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma , Ryuichi Kanoh
IPC: H04N19/105 , H04N19/119 , H04N19/139 , H04N19/14 , H04N19/176 , H04N19/52 , H04N19/573
Abstract: An encoder is disclosed which includes circuitry and memory. Using the memory, the circuitry, in a first operating mode, derives first motion vectors for a first block obtained by splitting a picture, and generates a prediction image corresponding to the first block, with a bi-directional optical flow flag settable to true, and by referring to spatial gradients of luminance generated based on the first motion vectors. Using the memory, the circuitry, in a second operating mode, derives second motion vectors for a sub-block obtained by splitting a second block, the second block being obtained by splitting the picture, and generates a prediction image corresponding to the sub-block, with the bi-directional optical flow flag set to false.
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公开(公告)号：US11153569B2
公开(公告)日：2021-10-19
申请号：US16562281
申请日：2019-09-05
Inventor： Ru Ling Liao , Chong Soon Lim , Hai Wei Sun , Han Boon Teo , Jing Ya Li , Kiyofumi Abe , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/119 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/105 , H04N19/132
Abstract: An image encoder or decoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, predicts a first set of samples for a first partition of a current picture with one or more motion vectors including a first motion vector and predicts a second set of samples for a first portion of the first partition with one or more motion vectors from a second partition different from the first partition. The samples of the first set of samples of the first portion of the first partition and of the second set of samples of the first portion of the first partition are weighted. A motion vector for the first portion of the first partition is stored which is based on one or both of the first motion vector and the second motion vector. The first partition is encoded or decoded using at least the weighted samples of the first portion of the first partition.
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公开(公告)号：US11133035B2
公开(公告)日：2021-09-28
申请号：US16920026
申请日：2020-07-02
Inventor： Hiroshi Yahata , Tadamasa Toma
IPC: H04N5/92 , H04N5/84 , G11B27/28 , G11B20/10 , G11B27/10 , G11B27/32 , H04N5/85 , H04N7/015 , H04N9/804 , H04N9/82 , H04N9/00 , G11B27/00
Abstract: A playback device reads out and plays contents from a recording medium. The playback device includes a first decoder that decodes a base video stream and an enhanced video stream, a second decoder that decodes encoded graphics data, and a first superimposer that superimposes the enhanced video information and stores enhanced high-luminance video information in a first video plain. The playback device also includes a first processor that converts color of a number of levels into a converted number of levels, a second superimposer that superimposes the decoded graphic data on the enhanced high-luminance video information, a second video plain storing the video information, and a second processor that converts color of a number of levels into a converted number of levels. The playback device further includes a third superimposer that superimposes the decoded graphic data on the high-luminance video information, and an outputter that outputs the superimposed result.
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