公开(公告)号：US11722673B2

公开(公告)日：2023-08-08

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: H04N19/105 ,  H04N19/132 ,  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：US11716460B2

公开(公告)日：2023-08-01

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 ,  H04N19/159 ,  H04N19/176 ,  H04N19/177 ,  H04N19/91

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/177 ,  H04N19/91

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：US11700370B2

公开(公告)日：2023-07-11

申请号：US17272110

申请日：2019-08-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minwoo Park ,  Minsoo Park ,  Anish Tamse

IPC: H04N19/119 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/60 ,  H04N19/42

CPC classification number: H04N19/119 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/60 ,  H04N19/42

Abstract: Provided is a video decoding method including: generating coding units by splitting at least one of a height and a width of a largest coding unit having a first size; based on whether a height or a width of a non-square first coding unit including an outer boundary of an image, among the coding units, is greater than a maximum transform size, determining whether it is allowed to generate two second coding units by splitting at least one of the height and the width of the first coding unit; and decoding the second coding units generated from the first coding unit.

公开(公告)号：US11425416B2

公开(公告)日：2022-08-23

申请号：US17311209

申请日：2019-12-06

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 ,  H04N19/186 ,  H04N19/119 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  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：US11297315B2

公开(公告)日：2022-04-05

申请号：US17042461

申请日：2019-04-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: Provided are video encoding/decoding methods and apparatuses for determining an intra prediction mode of a current block, based on a width and height of the current block. When the current block has a square shape in which the width and height are equal, the intra prediction mode of the current block is determined from among first intra prediction mode candidates including a plurality of predetermined intra prediction directions, and when the current block has a non-square shape in which the width and height are not equal, the intra prediction mode of the current block is determined from among second intra prediction mode candidates configured based on the non-square shape.

公开(公告)号：US12278952B2

公开(公告)日：2025-04-15

申请号：US18428097

申请日：2024-01-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minwoo Park ,  Minsoo Park ,  Seungsoo Jeong ,  Anish Tamse

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/80

Abstract: A method of decoding an image according to an embodiment includes: when a size of a current block in the image is equal to or greater than a certain size, determining a candidate list including, as a candidate, a first reference block indicated by a temporal motion vector; when the first reference block is selected from among candidates included in the candidate list, determining motion vectors of sub-blocks in the current block by using motion vectors obtained from the first reference block; and reconstructing the current block based on sample values of a second reference block indicated by the motion vectors of the sub-blocks.

公开(公告)号：US12273517B2

公开(公告)日：2025-04-08

申请号：US18397484

申请日：2023-12-27

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 ,  H04N19/103 ,  H04N19/119 ,  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：US12244799B2

公开(公告)日：2025-03-04

申请号：US17527770

申请日：2021-11-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/96

Abstract: An image encoding and decoding method and apparatus are provided. The image decoding method includes obtaining a difference quantization parameter for a current coding unit from a bitstream, based on an area of a predefined difference quantization parameter signaling unit; obtaining a quantization parameter for the current coding unit by using a predicted quantization parameter for the current coding unit and the difference quantization parameter for the current coding unit; obtaining at least one inverse-quantized coefficient by performing inverse-quantization on at least one coefficient obtained based on residual information of the current coding unit included in the bitstream, based on the quantization parameter for the current coding unit; obtaining a residual block of the current coding unit, based on the inverse-quantized coefficient; and obtaining a reconstructed block of the current coding unit, based on the residual block of the current coding unit.

公开(公告)号：US12200261B2

公开(公告)日：2025-01-14

申请号：US17689641

申请日：2022-03-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minwoo Park ,  Minsoo Park ,  Kiho Choi ,  Yinji Piao ,  Anish Tamse

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/159 ,  H04N19/52 ,  H04N19/593 ,  H04N19/60

Abstract: An image decoding method includes: obtaining, from a bitstream, first coding tool enable flag information of a first coding tool, indicating whether or not the first coding tool is applicable to an image sequence; obtaining, from the bitstream, second coding tool enable flag information of at least one second coding tool related to the first coding tool, based on the obtained first coding tool enable flag information; identifying at least one coding tool of the first coding tool and the second coding tool that is applicable to the image sequence included in the bitstream, based on at least one of the first coding tool enable flag information and the second coding tool enable flag information; and performing decoding on the image sequence based on the identified at least one coding tool.

公开(公告)号：US12192512B2

公开(公告)日：2025-01-07

申请号：US17552000

申请日：2021-12-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/573 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/117 ,  H04N19/70

Abstract: A method of decoding motion information may include: obtaining, from a bitstream, change information indicating whether to change motion information of a neighboring block; when the change information indicates a change of the motion information and a higher block is able to use one reference picture list, identifying the number of pictures included in the reference picture list of the current block; selecting, as a reference picture of the current block, a reference picture of the neighboring block based on the number of pictures; when the reference picture of the neighboring block is selected as the reference picture of the current block, obtaining a motion vector of the current block by applying an offset to a motion vector of the neighboring block; and reconstructing the current block by using a reference block indicated by the motion vector of the current block in the reference picture of the current block.