公开(公告)号：US20220295049A1

公开(公告)日：2022-09-15

申请号：US17826898

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：US20220248020A1

公开(公告)日：2022-08-04

申请号：US17723265

申请日：2022-04-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Narae Choi ,  Minwoo Park

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  G06F1/03

Abstract: Provided are a video decoding method and apparatus including: in a video encoding and decoding process, determining parity information of a current block based on a width and a height of the current block; determining a lookup table of the current block from among a plurality of predefined lookup tables based on the parity information; determining a dequantization scale value of the current block based on the lookup table of the current block; and performing dequantization on the current block by using the dequantization scale value.

公开(公告)号：US20220239916A1

公开(公告)日：2022-07-28

申请号：US17723102

申请日：2022-04-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Narae Choi ,  Minwoo Park

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  G06F1/03

Abstract: Provided are a video decoding method and apparatus including: in a video encoding and decoding process, determining parity information of a current block based on a width and a height of the current block; determining a lookup table of the current block from among a plurality of predefined lookup tables based on the parity information; determining a dequantization scale value of the current block based on the lookup table of the current block; and performing dequantization on the current block by using the dequantization scale value.

公开(公告)号：US20220030236A1

公开(公告)日：2022-01-27

申请号：US17492250

申请日：2021-10-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo PARK ,  Chanyul Kim ,  Minwoo Park ,  Seungsoo Jeong ,  Kiho Choi ,  Narae Choi ,  Woongil Choi ,  Anish Tamse ,  Yin-ji Piao

IPC: H04N19/119 ,  H04N19/103 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/60

Abstract: Provided is an image decoding method including: determining a first coding block and a second coding block corresponding to the first coding block; when a size of the first coding block is equal to or smaller than a preset size, obtaining first split shape mode information and second split shape mode information from a bitstream, determining a split mode of the first coding block, based on the first split shape mode information, and determining a split mode of the second coding block, based on the second split shape mode information; and decoding a coding block of a first color component which is determined based on the split mode of the first coding block and a coding block of a second color component which is determined based on the split mode of the second coding block.

公开(公告)号：US11140390B2

公开(公告)日：2021-10-05

申请号：US17052573

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo Park ,  Chanyul Kim ,  Minwoo Park ,  Seungsoo Jeong ,  Kiho Choi ,  Narae Choi ,  Woongil Choi ,  Anish Tamse ,  Yin-ji Piao

IPC: H04N11/02 ,  H04N19/119 ,  H04N19/184 ,  H04N19/186 ,  H04N19/176 ,  H04N19/103 ,  H04N19/60

Abstract: Provided is an image decoding method including: determining a first coding block and a second coding block corresponding to the first coding block; when a size of the first coding block is equal to or smaller than a preset size, obtaining first split shape mode information and second split shape mode information from a bitstream; determining a split mode of the first coding block, based on the first split shape mode information, and determining a split mode of the second coding block, based on the second split shape mode information; and decoding a coding block of a first color component which is determined based on the split mode of the first coding block and a coding block of a second color component which is determined based on the split mode of the second coding block.

公开(公告)号：US20210176469A1

公开(公告)日：2021-06-10

申请号：US17175152

申请日：2021-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Narae Choi ,  Minwoo Park

IPC: H04N19/124 ,  H04N19/30 ,  H04N19/176 ,  G06F1/03

Abstract: Provided are a video decoding method and apparatus including: in a video encoding and decoding process, determining parity information of a current block based on a width and a height of the current block; determining a lookup table of the current block from among a plurality of predefined lookup tables based on the parity information; determining a dequantization scale value of the current block based on the lookup table of the current block; and performing dequantization on the current block by using the dequantization scale value.

公开(公告)号：US20250142104A1

公开(公告)日：2025-05-01

申请号：US19008139

申请日：2025-01-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo PARK ,  Minwoo Park

IPC: H04N19/46 ,  G06Q10/0631 ,  G06Q10/0637 ,  G06Q10/0639 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82

Abstract: An image decoding method may include obtaining a first coded block flag, when the first coded block flag of the current coding unit indicates that the current coding unit comprises the one or more non-zero significant transform coefficients, identifying whether at least one of a height and a width of the current coding unit is greater than a predetermined size, based on whether the at least one of the height and the width of the current coding unit is greater than the predetermined size, obtaining at least one transform unit, when the at least one of the height and the width of the current coding unit is greater than the predetermined size, obtaining a second coded block flag, obtaining a residual signal of the block of the luma component based on the second coded block flag, and reconstructing the current coding unit based on the residual signal.

公开(公告)号：US12262039B2

公开(公告)日：2025-03-25

申请号：US17713693

申请日：2022-04-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woongil Choi ,  Minwoo Park ,  Kwangpyo Choi ,  Kiho Choi

IPC: H04N19/176 ,  H04N19/184 ,  H04N19/189 ,  H04N19/46

Abstract: An image decoding method may include: receiving a bitstream generated as a result of encoding an image sequence; obtaining, from a sequence parameter set of the bitstream, a first tool set index indicating a tool allowed to decode the bitstream among a plurality of tools; obtaining, from the sequence parameter set, tool flags based on the tool flags, identifying a tool that has been used to encode the image sequence among the plurality of tools; and reconstructing the image sequence based on the identified tool, wherein values of the tool flags are set according to a value of the first tool set index.

公开(公告)号：US20250047861A1

公开(公告)日：2025-02-06

申请号：US18920390

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：US12184889B2

公开(公告)日：2024-12-31

申请号：US18531301

申请日：2023-12-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo Jeong ,  Minwoo Park ,  Minsoo Park

IPC: H04N19/53 ,  H04N19/139 ,  H04N19/176

Abstract: In a video encoding and decoding process, a video decoding method and a video decoding apparatus are provided to for determining whether a motion vector of an adjacent block at a location corresponding to one motion vector resolution among a plurality of motion vector resolutions is available, when the motion vector of the adjacent block is available, obtaining the motion vector of the adjacent block as a motion vector predictor of a current block, when the motion vector of the adjacent block is unavailable, obtaining a default motion vector by using a motion vector of one of two other adjacent blocks of the current block as a motion vector predictor of the current block, and performing prediction on the current block based on the motion vector predictor of the current block.