公开(公告)号：US20210235095A1

公开(公告)日：2021-07-29

申请号：US17051999

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

Abstract: Provided are a video encoding or decoding method and apparatus, which, during video encoding and decoding processes, determine whether an intra prediction mode of the current block is a DC mode, when the intra prediction mode of the current block is the DC mode, in a case where lengths of a height and a width of the current block are the same, determine an average of upper reference samples of the current block and left reference samples of the current block, as a DC value, and in a case where the lengths of the height and the width of the current block are different from each other, determine a weighted average value, which is determined by determining an average of the upper reference samples of the current block as an upper DC value, determine an average of the left reference samples of the current block as a left DC value, and combining the upper value and the left DC value with a predetermined weight, as a DC value, and perform intra prediction on the current block, based on the DC value.

公开(公告)号：US20210152844A1

公开(公告)日：2021-05-20

申请号：US17045376

申请日：2019-04-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

Abstract: A video decoding method includes: obtaining two or more base motion vectors from an adjacent block of a current block; obtaining correction information for correcting the two or more base motion vectors; determining two or more affine motion vectors by correcting the two or more base motion vectors according to the correction information; obtaining a plurality of affine parameters of the current block according to the two or more affine motion vectors; and predicting the current block according to the plurality of affine parameters.

公开(公告)号：US20210127134A1

公开(公告)日：2021-04-29

申请号：US17054347

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/577 ,  H04N19/44 ,  H04N19/105 ,  H04N19/119

Abstract: A video decoding method includes determining, based on an area of a current block, whether a multi-prediction combination mode for predicting the current block by combining prediction results obtained according to a plurality of prediction modes is applied to the current block, when the multi-prediction combination mode is applied to the current block, determining the plurality of prediction modes to be applied to the current block, generating a plurality of prediction blocks of the current block, according to the plurality of prediction modes, and determining a combined prediction block of the current block, by combining the plurality of prediction blocks according to respective weights.

公开(公告)号：US20210105465A1

公开(公告)日：2021-04-08

申请号：US17071600

申请日：2020-10-15

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：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：US20240320578A1

公开(公告)日：2024-09-26

申请号：US18680233

申请日：2024-05-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo PARK ,  Minwoo Park

IPC: G06Q10/0631 ,  G06Q10/0637 ,  G06Q10/0639 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46

CPC classification number: G06Q10/06312 ,  G06Q10/0637 ,  G06Q10/0639 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46

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：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：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：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.