公开(公告)号：US11196994B2

公开(公告)日：2021-12-07

申请号：US16622043

申请日：2018-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-soo Park ,  Min-woo Park

IPC: H04N19/119 ,  H04N19/13 ,  H04N19/14

Abstract: Provided are image decoding/encoding methods and apparatuses for increasing coding efficiency and reducing complexity while using a flexible tree split. The image decoding method includes: obtaining, from a bitstream, a bin string corresponding to a split shape mode of a coding unit; determining a split rule of the coding unit; and splitting the coding unit into a plurality of coding units, based on at least one of the split rule and the bin string corresponding to the split shape mode, wherein the determining of the split rule includes: determining an allowable first range of a size of the coding unit according to a ratio of a width and a height of the coding unit; and determining an allowable second range of the size of the coding unit according to the split shape mode of the coding unit.

公开(公告)号：US12003750B2

公开(公告)日：2024-06-04

申请号：US18094805

申请日：2023-01-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho Choi ,  Min-soo Park ,  Elena Alshina

IPC: H04N19/44 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/45 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A method and apparatus for performing transformation and inverse transformation on a current block by using multi-core transform kernels in video encoding and decoding processes. A video decoding method may include obtaining, from a bitstream, multi-core transformation information indicating whether multi-core transformation kernels are to be used according to a size of a current block; obtaining horizontal transform kernel information and vertical transform kernel information from the bitstream when the multi-core transformation kernels are used according to the multi-core transformation information; determining a horizontal transform kernel for the current block according to the horizontal transform kernel information; determining a vertical transform kernel for the current block according to the vertical transform kernel information; and performing inverse transformation on the current block by using the horizontal transform kernel and the vertical transform kernel.

公开(公告)号：US11689721B2

公开(公告)日：2023-06-27

申请号：US17521266

申请日：2021-11-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-soo Park ,  Min-woo Park

IPC: H04N19/119 ,  H04N19/13 ,  H04N19/14

CPC classification number: H04N19/119 ,  H04N19/13 ,  H04N19/14

Abstract: Provided are image decoding/encoding methods and apparatuses for increasing coding efficiency and reducing complexity while using a flexible tree split. The image decoding method includes: obtaining, from a bitstream, a bin string corresponding to a split shape mode of a coding unit; determining a split rule of the coding unit; and splitting the coding unit into a plurality of coding units, based on at least one of the split rule and the bin string corresponding to the split shape mode, wherein the determining of the split rule includes: determining an allowable first range of a size of the coding unit according to a ratio of a width and a height of the coding unit; and determining an allowable second range of the size of the coding unit according to the split shape mode of the coding unit.

公开(公告)号：US11589066B2

公开(公告)日：2023-02-21

申请号：US16613184

申请日：2018-07-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho Choi ,  Min-soo Park ,  Elena Alshina

IPC: H04N19/44 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A method and apparatus for performing transformation and inverse transformation on a current block by using multi-core transform kernels in video encoding and decoding processes. A video decoding method may include obtaining, from a bitstream, multi-core transformation information indicating whether multi-core transformation kernels are to be used according to a size of a current block; obtaining horizontal transform kernel information and vertical transform kernel information from the bitstream when the multi-core transformation kernels are used according to the multi-core transformation information; determining a horizontal transform kernel for the current block according to the horizontal transform kernel information; determining a vertical transform kernel for the current block according to the vertical transform kernel information; and performing inverse transformation on the current block by using the horizontal transform kernel and the vertical transform kernel.

公开(公告)号：US11523110B2

公开(公告)日：2022-12-06

申请号：US17375535

申请日：2021-07-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo Park ,  Min-soo Park

IPC: H04N19/107 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoding method includes: splitting a first block included in an image on the basis of at least one of a split type and a split direction of the first block to determine at least one second block from the first block; determining one of a prediction mode of the at least one second block and whether to split the at least one second block on the basis of at least one of a size and a shape of the determined at least one second block; obtaining a prediction block of a block included in the at least one second block on the basis of one of the determined prediction mode and whether to split the at least one second block; and restoring the block included in the at least one second block on the basis of the prediction block of the block included in the at least one second block. Here, the split type represents one of binary-split, tri-split, and quad-split.

公开(公告)号：US11330259B2

公开(公告)日：2022-05-10

申请号：US16623252

申请日：2018-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-soo Park ,  Min-woo Park ,  Bo-ra Jin

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176

Abstract: Provided are an encoding method and apparatus, and a decoding method and apparatus for adaptively selecting a context model used to entropy-encode and entropy-decode a syntax element, based on various shapes of coding units. The image decoding method includes: determining a context model based on block shape information including at least one of a shape, direction, width, ratio of width and height, or size of a coding unit; obtaining, from a bitstream based on the context model, information about a split shape mode for splitting the coding unit; and determining a split shape mode of the coding unit, based on the information about the split shape mode.

公开(公告)号：US11095884B2

公开(公告)日：2021-08-17

申请号：US16627551

申请日：2018-07-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo Park ,  Min-soo Park

IPC: H04N19/107 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoding method includes: splitting a first block included in an image on the basis of at least one of a split type and a split direction of the first block to determine at least one second block from the first block; determining one of a prediction mode of the at least one second block and whether to split the at least one second block on the basis of at least one of a size and a shape of the determined at least one second block; obtaining a prediction block of a block included in the at least one second block on the basis of one of the determined prediction mode and whether to split the at least one second block; and restoring the block included in the at least one second block on the basis of the prediction block of the block included in the at least one second block. Here, the split type represents one of binary-split, tri-split, and quad-split.