公开(公告)号：US20240073446A1

公开(公告)日：2024-02-29

申请号：US18502696

申请日：2023-11-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

CPC classification number: H04N19/56 ,  H04N19/109 ,  H04N19/176

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：US20240064336A1

公开(公告)日：2024-02-22

申请号：US18237109

申请日：2023-08-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyungah KIM ,  Quockhanh DINH ,  Minsoo PARK ,  Minwoo PARK ,  Kwangpyo CHOI ,  Yinji PIAO

IPC: H04N19/66 ,  H04N19/132 ,  H04N19/105 ,  H04N19/176

CPC classification number: H04N19/66 ,  H04N19/132 ,  H04N19/105 ,  H04N19/176

Abstract: A method of decoding an image, including obtaining a motion vector of a current block; obtaining a preliminary prediction block based on a reference block indicated by the motion vector in a reference image; obtaining a final prediction block for the current block by applying, to a neural network, at least one of a picture order count (POC) map including a POC difference between the reference image and a current image including the current block, the preliminary prediction block, and a quantization error map; and reconstructing the current block based on the final prediction block and a residual block obtained from a bitstream, wherein sample values of the quantization error map are calculated based on a quantization parameter for the reference block

公开(公告)号：US20230412819A1

公开(公告)日：2023-12-21

申请号：US18461271

申请日：2023-09-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seung-soo JEONG ,  Minwoo PARK

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

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/521

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：US20230362370A1

公开(公告)日：2023-11-09

申请号：US18353962

申请日：2023-07-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/91

Abstract: 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; generating 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：US20230146358A1

公开(公告)日：2023-05-11

申请号：US18148937

申请日：2022-12-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Anish TAMSE ,  Minwoo PARK

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

CPC classification number: 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：US20230145364A1

公开(公告)日：2023-05-11

申请号：US17984063

申请日：2022-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo PARK ,  Minwoo PARK ,  Ilkoo KIM ,  Kwangpyo CHOI

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/176

Abstract: Provided are a video decoding method and apparatus for obtaining, from a bitstream, information about a first motion vector of a current block, determining, based on the information about the first motion vector, the first motion vector, determining a candidate list including a plurality of candidate prediction motion vectors for determining a second motion vector of the current block, determining, based on a distance between each of the plurality of candidate prediction motion vectors and the first motion vector, one of the plurality of candidate prediction motion vectors as the second motion vector, and determining a motion vector of the current block by using the first motion vector and the second motion vector.

公开(公告)号：US20230070926A1

公开(公告)日：2023-03-09

申请号：US17986052

申请日：2022-11-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woongil CHOI ,  Gahyun RYU ,  Minsoo PARK ,  Minwoo PARK ,  Yumi SOHN ,  Seungsoo JEONG ,  Narae CHOI ,  Anish TAMSE

IPC: H04N19/513 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176

Abstract: Provided is a video decoding method including: determining whether or not to perform history-based motion vector prediction for inter-prediction of a current block, based on a location of the current block in a tile including a plurality of largest coding units; when it is determined to perform the history-based motion vector prediction on the current block, generating a motion information candidate list including history-based motion vector candidates; determining a motion vector of the current block by using a motion vector predictor determined from the motion information candidate list; and reconstructing the current block by using the motion vector of the current block, wherein, when a motion constraint is applied to a first tile group, when a reference picture of a first tile from among tiles included in the first tile group is a second picture, a motion vector of the first tile is not permitted to indicate a block of the second picture, the block being located outside a second tile group, and when the motion constraint is not applied to the first tile group, the motion vector of the first tile is permitted to indicate the block of the second picture, the block being located outside the second tile group.

公开(公告)号：US20230054879A1

公开(公告)日：2023-02-23

申请号：US17981040

申请日：2022-11-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: Provided are a method and apparatus, which, during video encoding and decoding processes, obtain chroma intra prediction mode information about a current chroma block, when the chroma intra prediction mode information indicates a direct mode (DM), determine a luma block including a luma sample corresponding to a chroma sample at a lower-right location with respect to a center of the current chroma block, determine a chroma intra prediction mode of the current chroma block based on an intra prediction mode of the determined luma block, and perform intra prediction on the current chroma block, based on the determined chroma intra prediction mode.

公开(公告)号：US20220248019A1

公开(公告)日：2022-08-04

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

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：US20220201296A1

公开(公告)日：2022-06-23

申请号：US17689402

申请日：2022-03-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo PARK ,  Minwoo PARK ,  Kiho CHOI ,  Seungsoo JEONG

IPC: H04N19/119 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: An image decoding method includes reconstructing a current image by performing deblocking filtering on a boundary of at least one reconstruction block from among reconstruction blocks, wherein the reconstructing of the current image by performing the deblocking filtering on the boundary of the at least one reconstruction block from among the reconstruction blocks includes, when a prediction mode of at least one reconstruction mode from among blocks located on both sides of the boundary of the at least one reconstruction block is a combined inter-intra prediction mode, determining that a value of a boundary filtering strength applied to the boundary of the at least one reconstruction block is a predetermined value and performing deblocking filtering on the boundary of the at least one reconstruction block based on the determined value of the boundary filtering strength.