公开(公告)号：US20220141484A1

公开(公告)日：2022-05-05

申请号：US17573974

申请日：2022-01-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Minsoo PARK ,  Minwoo PARK ,  Kiho CHO ,  Yinji PIAO

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/109

Abstract: Provided is a video decoding method including: determining a prediction mode of a current block to be one of a skip mode and a merge mode; when a motion vector, which is determined from a merge candidate list of the current block, and a merge motion vector difference are to be used, obtaining merge candidate information indicating one candidate in the merge candidate list by performing entropy encoding on a bitstream by applying one piece of context information; determining a base motion vector from one candidate determined from the merge candidate list, based on the merge candidate information; and determining a motion vector of the current block by using a distance index of a merge motion vector difference of the current block and a direction index of the merge motion vector difference to use the base motion vector and the merge motion vector difference.

公开(公告)号：US20220109834A1

公开(公告)日：2022-04-07

申请号：US17416984

申请日：2019-12-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Anish TAMSE ,  Minsoo PARK ,  Minwoo PARK

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/105 ,  H04N19/52 ,  H04N19/91

Abstract: According to an embodiment, provided is an image decoding method including obtaining, from a bitstream, information related to a triangle prediction mode for a current block; splitting the current block into two triangular partitions, according to the information related to a triangle prediction mode; generaling a merge list for a triangle prediction mode, according to a merge list generation method in a regular merge mode; selecting a motion vector for the two triangular partitions according to information indicating the motion vector from among motion vectors included in the merge list; obtaining, from a reference image, prediction blocks corresponding to the two triangular partitions, based on the motion vector; and reconstructing the current block, based on a final prediction block.

公开(公告)号：US20220014730A1

公开(公告)日：2022-01-13

申请号：US17294164

申请日：2019-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Gahyun RYU ,  Minsoo Park ,  Minwoo PARK ,  Kiho CHOI ,  Narae CHOI ,  Woongil CHOI ,  Anish TAMSE ,  Yinji PIAO

IPC: H04N19/105 ,  H04N19/91 ,  H04N19/159 ,  H04N19/177 ,  H04N19/176

Abstract: Disclosed is an image decoding method according to an embodiment, the image decoding method including: obtaining a first reference block and a second reference block, for bi-directional prediction of a current block; obtaining, from a bitstream, weight information for combining the first reference block with the second reference block; performing entropy decoding on the weight information to obtain a weight index; combining the first reference block with the second reference block according to a candidate value indicated by the weight index among candidate values included in a weight candidate group; and reconstructing the current block based on a result of the combining, wherein a first binary value corresponding to the weight index is entropy-decoded based on a context model, and the remaining binary value corresponding to the weight index is entropy-decoded by a bypass method.

公开(公告)号：US20210266557A1

公开(公告)日：2021-08-26

申请号：US17251305

申请日：2019-06-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Narae CHOI ,  Minwoo PARK ,  Minsoo PARK ,  Seungsoo JEONG ,  Kiho CHOI ,  Woongil CHOI ,  Anish TAMSE ,  Yinji PIAO

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/80 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176

Abstract: Provided is a video decoding method including: obtaining, from a bitstream, intra prediction mode information indicating an intra prediction mode of a current block; determining an interpolation filter set to be used in prediction of the current block, based on at least one of a size of the current block and the intra prediction mode indicated by the intra prediction mode information; determining a reference location to which a current sample of the current block refers according to the intra prediction mode; determining, in the interpolation filter set, an interpolation filter that corresponds to the reference location; determining a prediction value of the current sample, according to reference samples of the current block and the interpolation filter; and reconstructing the current block, based on the prediction value of the current sample.

公开(公告)号：US20210235114A1

公开(公告)日：2021-07-29

申请号：US17228234

申请日：2021-04-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Minwoo PARK ,  Yumi SOHN ,  Kiho CHOI

IPC: H04N19/53 ,  H04N19/109 ,  H04N19/176

Abstract: Provided are a video encoding and decoding method and apparatus for obtaining, in a video encoding and decoding process, motion vector resolution information from a bit stream by using a high-level syntax which is a group of information that is applied to a predefined data unit group; determining a motion vector resolution of a current block included in the predefined data unit group based on the motion vector resolution information; determining a prediction motion vector of the current block to be a motion vector of a candidate block from among at least one candidate block, based on the motion vector resolution of the current block; and determining a motion vector of the current block by using the prediction motion vector of the current block.

公开(公告)号：US20200314446A1

公开(公告)日：2020-10-01

申请号：US16954639

申请日：2019-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Minwoo PARK ,  Seungsoo JEONG ,  Jinyoung LEE

IPC: H04N19/52 ,  H04N19/59 ,  H04N19/176 ,  H04N19/122 ,  H04N19/186

Abstract: Provided are a method and apparatus for, in a video encoding and decoding procedure, selecting a candidate motion vector of a current block from a motion vector candidate list of the current block, determining a motion vector of the current block by performing a motion search based on the candidate motion vector, performing motion compensation by using the determined motion vector of the current block, and applying local luminance compensation to the current block based on whether the local luminance compensation is to be applied to the current block, wherein a cost function used for performing the motion search is determined based on whether the local luminance compensation is to be applied to the current block.

公开(公告)号：US20250047900A1

公开(公告)日：2025-02-06

申请号：US18920222

申请日：2024-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Minwoo PARK

IPC: H04N19/523 ,  H04N19/103 ,  H04N19/176 ,  H04N19/513

Abstract: Provided is a video decoding method including: obtaining, from a sequence parameter set, sequence merge mode with motion vector difference (sequence MMVD) information indicating whether an MMVD mode is applicable in a current sequence; when the MMVD mode is applicable according to the sequence MMVD information, obtaining, from a bitstream, first MMVD information indicating whether the MMVD mode is applied in a first inter prediction mode for a current block included in the current sequence; when the MMVD mode is applicable in the first inter prediction mode according to the first MMVD information, reconstructing a motion vector of the current block which is to be used in the first inter prediction mode, by using a distance of a motion vector difference and a direction of a motion vector difference obtained from the bitstream; and reconstructing the current block by using the motion vector of the current block.

公开(公告)号：US20250047860A1

公开(公告)日：2025-02-06

申请号：US18920300

申请日：2024-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Minwoo PARK

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: Provided are a video decoding method and apparatus, in which, during video encoding and decoding processes: in which a first bin of a sub-block merge index indicating a candidate motion vector of a sub-block merge mode is obtained, the first bin being arithmetic-encoded using a context model, a second arithmetic-encoded in a bypass mode is obtained based on a first value obtained by arithmetic-decoding the first bin by using the context model, a second value is obtained by arithmetic-decoding the second bin in the bypass mode, and prediction on a current block is performed in the sub-block merge mode, based on the first value and the second value.

公开(公告)号：US20240187637A1

公开(公告)日：2024-06-06

申请号：US18439221

申请日：2024-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Minwoo PARK ,  Gahyun RYU ,  Minsoo PARK ,  Seungsoo JEONG ,  Kiho CHOI ,  Narae CHOI ,  Woongil CHOI ,  Yinji PIAO

IPC: H04N19/52 ,  H04N19/119 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/527

CPC classification number: H04N19/52 ,  H04N19/119 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/527

Abstract: A video decoding method and device for determining whether a prediction mode of a current block is an affine mode; splitting, when the prediction mode of the current block is the affine mode, a luma block of the current block into a plurality of sub luma blocks having a square shape based on a predefined sub block size; determining a mean luma motion vector for four neighboring sub luma blocks among the plurality of sub luma blocks, by using a motion vector of an upper-left sub luma block of the four sub luma blocks and a motion vector of a lower-right sub luma block of the four sub luma blocks; determining the mean luma motion vector to be a motion vector of a current sub chroma block corresponding to the four sub luma blocks; and performing prediction on the current sub chroma block by using the determined motion vector, in a video encoding and decoding process are suggested.

公开(公告)号：US20240107058A1

公开(公告)日：2024-03-28

申请号：US18528154

申请日：2023-12-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Minwoo PARK

IPC: H04N19/523 ,  H04N19/103 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/523 ,  H04N19/103 ,  H04N19/176 ,  H04N19/513

Abstract: Provided is a video decoding method including: obtaining, from a sequence parameter set, sequence merge mode with motion vector difference (sequence MMVD) information indicating whether an MMVD mode is applicable in a current sequence; when the MMVD mode is applicable according to the sequence MMVD information, obtaining, from a bitstream, first MMVD information indicating whether the MMVD mode is applied in a first inter prediction mode for a current block included in the current sequence; when the MMVD mode is applicable in the first inter prediction mode according to the first MMVD information, reconstructing a motion vector of the current block which is to be used in the first inter prediction mode, by using a distance of a motion vector difference and a direction of a motion vector difference obtained from the bitstream; and reconstructing the current block by using the motion vector of the current block.