公开(公告)号：US20240380898A1

公开(公告)日：2024-11-14

申请号：US18782947

申请日：2024-07-24

Applicant: SAMSUNG ELECTRONICS CO,.LTD.

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

IPC: H04N19/174 ,  H04N19/117 ,  H04N19/176 ,  H04N19/60 ,  H04N19/82

Abstract: In a video encoding and decoding process, provided are a method and apparatus for determining whether a slice including an adjacent pixel located at the upper-left or lower-right side of a current pixel from among adjacent pixels used for an adaptive loop filter of the current pixel is different from a slice including the current pixel, when the slice including the adjacent pixel at the upper-left or lower-right location is different from the slice including the current pixel, determining a value of the adjacent pixel located at the upper-left or lower-right side as a value of a closest pixel in a horizontal direction of the adjacent pixel located at the upper-left or lower-right side from among pixels included in the slice including the current pixel, determining an adaptive loop filter including a filter coefficient for the current pixel and the adjacent pixels based on values of the current pixel and the adjacent pixels, correcting the value of the current pixel by using the values of the adjacent pixels, by applying the adaptive loop filter to the current pixel, and encoding/decoding a current block including the current pixel.

公开(公告)号：US12081772B2

公开(公告)日：2024-09-03

申请号：US17573181

申请日：2022-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/174 ,  H04N19/117 ,  H04N19/176 ,  H04N19/60 ,  H04N19/82

CPC classification number: H04N19/174 ,  H04N19/117 ,  H04N19/176 ,  H04N19/60 ,  H04N19/82

Abstract: In a video encoding and decoding process, provided are a method and apparatus for determining whether a slice including an adjacent pixel located at the upper-left or lower-right side of a current pixel from among adjacent pixels used for an adaptive loop filter of the current pixel is different from a slice including the current pixel, when the slice including the adjacent pixel at the upper-left or lower-right location is different from the slice including the current pixel, determining a value of the adjacent pixel located at the upper-left or lower-right side as a value of a closest pixel in a horizontal direction of the adjacent pixel located at the upper-left or lower-right side from among pixels included in the slice including the current pixel, determining an adaptive loop filter including a filter coefficient for the current pixel and the adjacent pixels based on values of the current pixel and the adjacent pixels, correcting the value of the current pixel by using the values of the adjacent pixels, by applying the adaptive loop filter to the current pixel, and encoding/decoding a current block including the current pixel.

公开(公告)号：US11962800B2

公开(公告)日：2024-04-16

申请号：US17375769

申请日：2021-07-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/82

Abstract: A video decoding method includes predicting a current block according to an intra prediction mode of the current block, determining whether to apply position dependent intra prediction filtering to the current block according to the intra prediction mode of the current block, when the position dependent intra prediction filtering is applied to the current block, determining at least one of an upper reference sample, a left reference sample, an upper weight, and a left weight for the position dependent intra prediction filtering of a current sample of the current block according to the intra prediction mode of the current block, and applying the position dependent intra prediction filtering to the current sample of the current block according to at least one of the upper reference sample, the left reference sample, the upper weight, and the left weight.

公开(公告)号：US11943430B2

公开(公告)日：2024-03-26

申请号：US17263406

申请日：2019-07-29

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

CPC classification number: 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：US11936902B2

公开(公告)日：2024-03-19

申请号：US17981567

申请日：2022-11-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish Tamse ,  Minwoo Park ,  Minsoo Park

IPC: H04N19/00 ,  H04N19/107 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/40 ,  H04N19/513 ,  H04N19/52

CPC classification number: H04N19/52 ,  H04N19/107 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/40 ,  H04N19/513

Abstract: Provided are a video decoding method and apparatus for, in a video encoding and decoding procedure, when a merge candidate list of a current block is configured, determining whether the number of merge candidates included in the merge candidate list is greater than 1 and is smaller than a predetermined maximum merge candidate number, when the number of the merge candidates included in the merge candidate list is greater than 1 and is smaller than the predetermined maximum merge candidate number, determining an additional merge candidate by using a first merge candidate and a second merge candidate of the merge candidate list of the current block, configuring the merge candidate list by adding the determined additional merge candidate to the merge candidate list, and performing prediction on the current block, based on the merge candidate list.

公开(公告)号：US20230396789A1

公开(公告)日：2023-12-07

申请号：US18447754

申请日：2023-08-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji PIAO ,  Anish Tamse

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A video decoding method includes, when inter prediction of a current block is performed in an affine merge mode, generating an affine merge candidate list including a control point-based affine merge candidate corresponding to control point motion vectors determined by using motion vectors of neighboring blocks included in a block group of representative neighboring blocks according to corners of the current block, determining an affine motion vector of the current block by using control point motion vectors corresponding to a merge candidate selected from the affine merge candidate list, and obtaining prediction samples of the current block by using the affine motion vector of the current block, wherein when a right block of the current block is available, a representative neighboring block adjacent to a lower right corner of the current block is a block whose available motion information is obtained from among a neighboring block adjacent to the lower right corner of the current block and a right boundary of the current block and a neighboring block diagonally adjacent to the lower right corner of the current block.

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：US11750827B2

公开(公告)日：2023-09-05

申请号：US17525305

申请日：2021-11-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji Piao ,  Anish Tamse

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: Video decoding method includes, when inter prediction of a current block is performed in an affine merge mode, generating an affine merge candidate list including a control point-based affine merge candidate corresponding to control point motion vectors determined by using motion vectors of neighboring blocks included in a block group of representative neighboring blocks according to corners of the current block, determining an affine motion vector of the current block by using control point motion vectors corresponding to a merge candidate selected from the affine merge candidate list, and obtaining prediction samples of the current block by using the affine motion vector of the current block, wherein when a right block of the current block is available, a representative neighboring block adjacent to a lower right corner of the current block is a block whose available motion information is obtained from among a neighboring block adjacent to the lower right corner of the current block and a right boundary of the current block and a neighboring block diagonally adjacent to the lower right corner of the current block.

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.