公开(公告)号：US20220295052A1

公开(公告)日：2022-09-15

申请号：US17827239

申请日：2022-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/11 ,  H04N19/176

Abstract: Provided are a video decoding method and apparatus and a video encoding method and apparatus which determine whether to use a Most Probable Mode (MPM) list, based on encoding information of a current block, obtain, from a bitstream, intra prediction mode index information indicating one of candidate intra prediction modes included in the MPM list, and determine an intra prediction mode of the current block by using the obtained intra prediction mode index information.

公开(公告)号：US20220239900A1

公开(公告)日：2022-07-28

申请号：US17275824

申请日：2019-09-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Minwoo PARK ,  Kiho CHOI

IPC: H04N19/105 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176

Abstract: Provided are a video decoding method and device, in which, during video encoding and decoding processes: information about whether to apply an affine mode to a current block is received; when the information about whether to apply the affine mode indicates that the affine mode is to be applied, an affine parameter group is determined based on a history-based affine parameter group candidate list in which affine parameter groups of one or more blocks reconstructed in an affine mode before the current block are stored; and prediction on the current block is performed based on the affine parameter group.

公开(公告)号：US20220210461A1

公开(公告)日：2022-06-30

申请号：US17698638

申请日：2022-03-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji PIAO ,  Anish TAMSE

IPC: H04N19/513 ,  H04N19/44

Abstract: Methods and apparatuses for encoding and decoding motion information are provided. In an embodiment, a method of decoding motion information includes obtaining, from a bitstream, a resolution index indicating a motion vector resolution for inter-predicting a current block, a reference index of the current block, and prediction direction information of the current block. The method further includes determining a reference picture of the current block. The method further includes determining whether a prediction direction of the current block is unidirectional prediction in an L0 or L1 direction or bidirectional prediction. The method further includes determining a motion vector resolution set including one or more selectable motion vector resolutions. The method further includes determining a motion vector based on the prediction direction, according to the motion vector resolution indicated by the resolution index from among the motion vector resolution set. The method further includes reconstructing an image using the motion vector.

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：US20220070467A1

公开(公告)日：2022-03-03

申请号：US17522209

申请日：2021-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin-young LEE ,  Min-woo PARK ,  Anish TAMSE

IPC: H04N19/137 ,  H04N19/176 ,  H04N19/159 ,  H04N19/117

Abstract: An image decoding method includes obtaining, from a bitstream, first information indicating a motion vector resolution of a current unit among plural motion vector resolutions including a first motion vector resolution and a second motion vector resolution, and obtaining, from the bitstream, second information indicating whether a merge mode is applied to the current unit or not when the first information indicates the first motion vector resolution. The current unit is decoded based on the merge mode when the second information indicates that the merge mode is applied to the current unit. When the first information indicates the second motion vector resolution, the second information is not obtained from the bitstream.

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：US20210152843A1

公开(公告)日：2021-05-20

申请号：US16622157

申请日：2018-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin-young LEE ,  Seung-soo JEONG ,  Woong-il CHOI ,  Anish TAMSE ,  Yin-ji PIAO

IPC: H04N19/52 ,  H04N19/44

Abstract: A method of decoding a motion vector includes: obtaining information indicating a motion vector resolution (MVR) of a current block from a bitstream; selecting one candidate block from among at least one candidate block, based on the MVR of the current block; and obtaining a motion vector of the current block corresponding to the MVR, by using a motion vector of the determined one candidate block as a 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：US20200221087A1

公开(公告)日：2020-07-09

申请号：US16648546

申请日：2018-09-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Yin-ji PIAO ,  Jin-young LEE

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/129 ,  H04N19/139

Abstract: Provided is a video decoding method including: obtaining affine parameter group candidates of a current block based on whether adjacent blocks of the current block are decoded; determining an affine parameter group of the current block from among the affine parameter group candidates, according to affine parameter information of the current block; and reconstructing the current block, based on one or more affine parameters included in the affine parameter group.