公开(公告)号：US12225195B2

公开(公告)日：2025-02-11

申请号：US18322826

申请日：2023-05-24

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：US11805258B2

公开(公告)日：2023-10-31

申请号：US18151570

申请日：2023-01-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Na-rae Choi ,  Bo-ra Jin ,  Min-woo Park

IPC: H04N7/12 ,  H04N19/132 ,  H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/635

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/635

Abstract: Provided is an image decoding method including: generating an intra prediction value of a current sample based on a position of the current sample in a current block and an intra prediction mode of the current block; determining a sample value of at least one filtering reference sample to be filtered and a first weight with respect to the filtering reference sample and a second weight with respect to the intra prediction value of the current sample; generating a filtered prediction sample value of the current sample based on the determined sample value of the filtering reference sample to be filtered, the intra prediction value of the current sample, the first weight with respect to the filtering reference sample, and the second weight with respect to the intra prediction value of the current sample; and generating a prediction block of the current block including the filtered prediction sample value.

公开(公告)号：US11770526B2

公开(公告)日：2023-09-26

申请号：US17328323

申请日：2021-05-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo Park ,  Bo-ra Jin ,  Chan-yul Kim ,  Jung-hye Min

IPC: H04N19/119 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/176

Abstract: Provided is an image decoding method of decoding an image, the image decoding method including: obtaining at least one of block shape information and split shape information about a first coding unit included in the image, from a bitstream; determining at least one second coding unit included in the first coding unit based on at least one of the block shape information and the split shape information; and decoding the image based on the at least one second coding unit, wherein the block shape information indicates a shape of the first coding unit and the split shape information indicates whether the first coding unit is split into the at least one second coding unit. Also, provided is an image encoding method corresponding to the image decoding method. Also, provided is an image encoding apparatus and image decoding apparatus for respectively performing the image encoding method and image decoding method.

公开(公告)号：US11716485B2

公开(公告)日：2023-08-01

申请号：US17549046

申请日：2021-12-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seung-soo Jeong ,  Min-woo Park

IPC: H04N19/13 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/184 ,  H04N19/70

CPC classification number: H04N19/513 ,  H04N19/13 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: A method of decoding motion information according to an embodiment includes: obtaining information indicating a disparity distance for determining a prediction motion vector of a current block; scaling the disparity distance corresponding to the obtained information, based on a comparison result between a base pixel unit and a smallest pixel unit indicatable by a motion vector of the current block; determining a prediction motion vector candidate changed by the scaled disparity distance from a base motion vector of the current block from among one or more prediction motion vector candidates as the prediction motion vector of the current block; and determining the motion vector of the current block by using the prediction motion vector.

公开(公告)号：US11700380B2

公开(公告)日：2023-07-11

申请号：US17522384

申请日：2021-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin-young Lee ,  Min-woo Park ,  Anish Tamse

IPC: H04N19/00 ,  H04N19/137 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoding method includes obtaining, from a bitstream, first information indicating a motion vector resolution of a current unit among plural motion vector resolutions including a first motion vector resolution and a second motion vector resolution, and obtaining, from the bitstream, second information indicating whether a merge mode is applied to the current unit or not when the first information indicates the first motion vector resolution. The current unit is decoded based on the merge mode when the second information indicates that the merge mode is applied to the current unit. When the first information indicates the second motion vector resolution, the second information is not obtained from the bitstream. A picture is split into one or more largest coding units, and a largest coding unit among the one or more largest coding units is split into one or more coding units including the current unit.

公开(公告)号：US11528495B2

公开(公告)日：2022-12-13

申请号：US17348280

申请日：2021-06-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo Park ,  Bo-ra Jin ,  In-kwon Choi

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/136 ,  H04N19/176 ,  H04N19/593

Abstract: Provided is a method of decoding an image, the method including: determining at least one prediction unit included in a current frame that is one of at least one frame forming the image; determining a reference region to be referred to by a current prediction unit that is one of the at least one prediction unit; changing a sample value included in at least one of the current prediction unit and the reference region, based on an analyzing result of a sample value of the reference region; determining a sample value included in the current prediction unit, based on a result of changing the sample value; and decoding the image based on the determined sample value of the current prediction unit.

公开(公告)号：US11509926B2

公开(公告)日：2022-11-22

申请号：US17218808

申请日：2021-03-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seung-soo Jeong ,  Min-woo Park ,  Jin-Young Lee ,  Sun-il Lee

IPC: H04N19/52 ,  H04N19/176

Abstract: Provided is a video decoding method performed by a video decoding apparatus, the video decoding method including: determining prediction mode information of a current block and an index indicating a prediction candidate, from a bitstream; determining a prediction candidate list according to the prediction mode information; when the prediction mode information of the current block indicates a pre-set prediction mode, determining a motion vector indicated by the index indicating the prediction candidate from the prediction candidate list, and determining a prediction motion vector of the current block based on at least one of pieces of motion prediction information related to the motion vector; and determining a motion vector of the current block based on the prediction motion vector, wherein the pre-set prediction mode is a prediction mode different from a skip mode and a merge mode.

公开(公告)号：US20220272339A1

公开(公告)日：2022-08-25

申请号：US17740035

申请日：2022-05-09

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：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：US20210218984A1

公开(公告)日：2021-07-15

申请号：US17218574

申请日：2021-03-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seung-soo Jeong ,  Min-woo Park ,  Jin-Young Lee ,  Sun-il Lee

IPC: H04N19/52 ,  H04N19/176

Abstract: Provided is a video decoding method performed by a video decoding apparatus, the video decoding method including: determining prediction mode information of a current block and an index indicating a prediction candidate, from a bitstream; determining a prediction candidate list according to the prediction mode information; when the prediction mode information of the current block indicates a pre-set prediction mode, determining a motion vector indicated by the index indicating the prediction candidate from the prediction candidate list, and determining a prediction motion vector of the current block based on at least one of pieces of motion prediction information related to the motion vector; and determining a motion vector of the current block based on the prediction motion vector, wherein the pre-set prediction mode is a prediction mode different from a skip mode and a merge mode.