公开(公告)号：US20220360815A1

公开(公告)日：2022-11-10

申请号：US17867926

申请日：2022-07-19

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chong Soon LIM ,  Hai Wei SUN ,  Sughosh Pavan SHASHIDHAR ,  Han Boon TEO ,  Ru Ling LIAO ,  Jing Ya LI ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Ryuichi KANOH

IPC: H04N19/52

Abstract: An encoder which includes circuitry and memory. Using the memory, the circuitry generates a list which includes candidates for a first motion vector for a first partition. The list has a maximum list size and an order of the candidates, and at least one of the maximum list size or the order of the candidates is dependent on at least one of a partition size or a partition shape of the first partition. The circuitry selects the first motion vector from the candidates included in the list; encodes an index indicating the first motion vector among the candidates in the list into the bitstream based on the maximum list size; and generates the predicted image for the first partition using the first motion vector.

公开(公告)号：US20220264092A1

公开(公告)日：2022-08-18

申请号：US17728286

申请日：2022-04-25

Applicant: Panasonic Intellectual Property Corporation of America

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

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.

公开(公告)号：US20220248016A1

公开(公告)日：2022-08-04

申请号：US17728284

申请日：2022-04-25

Applicant: Panasonic Intellectual Property Corporation of America

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 ,  H04N19/52 ,  H04N19/176 ,  H04N19/137

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.

公开(公告)号：US20220248014A1

公开(公告)日：2022-08-04

申请号：US17727194

申请日：2022-04-22

Applicant: Panasonic Intellectual Property Corporation of America

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 ,  H04N19/52 ,  H04N19/176 ,  H04N19/137

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.

公开(公告)号：US20220201297A1

公开(公告)日：2022-06-23

申请号：US17689421

申请日：2022-03-08

Applicant: Panasonic Intellectual Property Corporation of America

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.

公开(公告)号：US20220086440A1

公开(公告)日：2022-03-17

申请号：US17532766

申请日：2021-11-22

Applicant: Panasonic Intellectual Property Corporation of America

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 ,  H04N19/184 ,  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.

公开(公告)号：US20210409743A1

公开(公告)日：2021-12-30

申请号：US17468383

申请日：2021-09-07

Applicant: Panasonic Intellectual Property Corporation of America

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: H04N19/44 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

Abstract: An image decoder includes circuitry and a memory, wherein the circuitry, in operation, determines whether inter prediction is to be applied to a current block; in response to determining that the inter prediction is to be applied to the current block, performs a partition prediction process; and, in response to determining that the inter prediction is not to be applied, decodes the current block without using the partition prediction process. The partition prediction process includes predicting first values of a set of pixels between a first partition and a second partition in the current block, using a first motion vector for the first partition; predicting second values of the set of pixels, using a second motion vector for the second partition; weighting the first values and the second values; and generating a prediction image for the current block using the weighted first values and the weighted second values.

公开(公告)号：US20210385465A1

公开(公告)日：2021-12-09

申请号：US17405244

申请日：2021-08-18

Applicant: Panasonic Intellectual Property Corporation of America

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: H04N19/159 ,  H04N19/513 ,  H04N19/139 ,  H04N19/119

Abstract: An encoder encodes a video, and includes: circuitry; and memory coupled to the circuitry. Using the memory, the circuitry: obtains at least two items of prediction information for a first partition included in the video; derives at least one template from neighboring samples which neighbor the first partition; calculates at least two costs, using the at least one template and the at least two items of prediction information; using the at least two costs, (i) determines at least one splitting direction for the first partition or (ii) assigns one of the at least two items of prediction information to a second partition split from the first partition according to the splitting direction, and another thereof to a third partition split from the first partition according to the splitting direction; and encodes the first partition according to the splitting direction and the at least two items of prediction information.

公开(公告)号：US20210274210A1

公开(公告)日：2021-09-02

申请号：US17323936

申请日：2021-05-18

Applicant: Panasonic Intellectual Property Corporation of America

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: An encoder includes circuitry and memory. Using the memory, the circuitry, in operation, selects an encoding mode from among candidates including a decoder-side motion vector refinement (DMVR) encoding mode and a partition encoding mode. When the DMVR encoding mode is selected, the circuitry: obtains a first motion vector for a first image block; derives a second motion vector from the first motion vector using motion search; and generates a prediction image for the first image block using the second motion vector. When the partition encoding mode is selected, the circuitry: determines a plurality of partitions in a second image block; obtains a third motion vector for each partition; and generates a prediction image for the second image block using the third motion vector, without deriving a fourth motion vector from the third motion vector using motion search.

公开(公告)号：US20200382779A1

公开(公告)日：2020-12-03

申请号：US16997147

申请日：2020-08-19

Applicant: Panasonic Intellectual Property Corporation of America

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 ,  H04N19/184 ,  H04N19/60

Abstract: A decoder that includes: circuitry; and a memory coupled to the circuitry. The circuitry, in operation: determines whether or not a first splitting of splitting a block into three sub blocks in a first direction parallel to a first side of the block is available by determining a magnitude relation between a size of a second side of the block and a first value, the second side being different from the first side, the first side being a longer side of the block; when the first splitting is available, parses, from a bitstream, a split direction parameter indicative of a splitting direction; splits the block into a plurality of sub blocks in a direction indicated by the split direction parameter; and decodes the plurality of sub blocks.