公开(公告)号：US11863783B2

公开(公告)日：2024-01-02

申请号：US17677498

申请日：2022-02-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Quockhanh Dinh ,  Minwoo Park ,  Minsoo Park ,  Kwangpyo Choi

IPC: H04N19/51 ,  H04N19/137 ,  H04N19/124 ,  H04N19/43 ,  H04N19/91 ,  H04N19/17

CPC classification number: H04N19/51 ,  H04N19/124 ,  H04N19/137 ,  H04N19/17 ,  H04N19/43 ,  H04N19/91

Abstract: A method of reconstructing an optical flow by using artificial intelligence (AI), including obtaining, from a bitstream, feature data of a current residual optical flow for a current image; obtaining the current residual optical flow by applying the feature data of the current residual optical flow to a neural-network-based first decoder; obtaining a current predicted optical flow based on at least one of a previous optical flow, feature data of the previous optical flow, and feature data of a previous residual optical flow; and reconstructing a current optical flow based on the current residual optical flow and the current predicted optical flow.

公开(公告)号：US11785217B2

公开(公告)日：2023-10-10

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 ,  H04N19/46

CPC classification number: H04N19/124 ,  G06F1/03 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46

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：US20230319283A1

公开(公告)日：2023-10-05

申请号：US18328503

申请日：2023-06-02

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 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/80

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/80

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：US11770531B2

公开(公告)日：2023-09-26

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 ,  H04N19/46

CPC classification number: H04N19/124 ,  G06F1/03 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46

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：US11765354B2

公开(公告)日：2023-09-19

申请号：US17723229

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 ,  H04N19/46

CPC classification number: H04N19/124 ,  G06F1/03 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46

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：US20230121088A1

公开(公告)日：2023-04-20

申请号：US18086311

申请日：2022-12-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Minwoo Park ,  Kiho Choi ,  Anish Tamse

IPC: H04N19/513 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/91

Abstract: Provided is a video decoding method including: generating a merge candidate list including neighboring blocks referred to predict a motion vector of a current block in a skip mode or a merge mode; when a merge motion vector difference is used according to merge difference mode information indicating whether the merge motion vector difference and a motion vector determined from the merge candidate list are used, determining a base motion vector from a candidate determined among the merge candidate list based on merge candidate information; determining the motion vector of the current block by using the base motion vector and a merge motion vector difference of the current block, the merge motion vector difference being determined by using a distance index and direction index of the merge motion vector difference of the current block; and reconstructing the current block by using the motion vector of the current block.

公开(公告)号：US11616963B2

公开(公告)日：2023-03-28

申请号：US17053571

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/119 ,  H04N19/122 ,  H04N19/70

Abstract: Provided is an image decoding method including determining a plurality of coding units in a chroma image by hierarchically splitting the chroma image, based on a split shape mode of blocks in the chroma image of a current image, and decoding the current image, based on the plurality of coding units in the chroma image. In this regard, the determining of the plurality of coding units in the chroma image may include, when a size or an area of a chroma block from among a plurality of chroma blocks to be generated by splitting a current chroma block in the chroma image is equal to or smaller than a preset size or a preset area, not allowing splitting of the current chroma block based on a split shape mode of the current chroma block, and determining at least one coding unit included in the current chroma block.

公开(公告)号：US11611762B2

公开(公告)日：2023-03-21

申请号：US17402084

申请日：2021-08-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seung-soo Jeong ,  Minwoo Park

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/513

Abstract: A video decoding method includes determining whether an ultimate motion vector expression (UMVE) mode is allowed for an upper data unit including a current block, when the UMVE mode is allowed for the upper data unit, determining whether the UMVE mode is applied to the current block, when the UMVE mode is applied to the current block, determining a base motion vector of the current block, determining a correction distance and a correction direction for correction of the base motion vector, determining a motion vector of the current block by correcting the base motion vector according to the correction distance and the correction direction, and reconstructing the current block based on the motion vector of the current block.

公开(公告)号：US20230030841A1

公开(公告)日：2023-02-02

申请号：US17967654

申请日：2022-10-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woongil CHOI ,  Gahyun Ryu ,  Minsoo Park ,  Minwoo Park ,  Seungsoo Jeong ,  Kwangpyo Choi ,  Kiho Choi ,  Narae Choi ,  Anish Tamse ,  Yinji Piao

IPC: H04N19/174 ,  H04N19/172 ,  H04N19/119 ,  H04N19/105 ,  H04N19/70

Abstract: Provided is a video decoding method including obtaining identification information of a first tile and identification information of a last tile from a bitstream, wherein the first and last tiles are included in a first slice, determining an index difference between the first tile and the last tile, based on a result of comparing the identification information of the first tile with the identification information of the last tile, determining the number of tiles included in the first slice, by using the index difference between the first tile and the last tile, and decoding a plurality of tiles included in the first slice according to an encoding order by using the number of tiles included in the first slice, the identification information of the first tile, and the identification information of the last tile.

公开(公告)号：US11546602B2

公开(公告)日：2023-01-03

申请号：US17271087

申请日：2019-08-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish Tamse ,  Woongil Choi ,  Minwoo Park ,  Seungsoo Jeong ,  Yinji Piao ,  Gahyun Ryu ,  Kiho Choi ,  Narae Choi ,  Minsoo Park

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/513

Abstract: Provided is an image decoding method including determining a current chroma block having a rectangular shape corresponding to a current luma block included in one of a plurality of luma blocks, determining a piece of motion information for the current chroma block and a chroma block adjacent to the current chroma block by using motion information of the current chroma block and the adjacent chroma block, and performing inter prediction on the current chroma block and the adjacent chroma block by using the piece of motion information for the current chroma block and the adjacent chroma block to generate prediction blocks of the current chroma block and the adjacent chroma block.