公开(公告)号：US12120295B2

公开(公告)日：2024-10-15

申请号：US18218925

申请日：2023-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

Abstract: According to the disclosure of the present document, when the inter-prediction type of the current block indicates biprediction, weight index information for a candidate in a merge candidate list or sub-block merge candidate list can be derived, and coding efficiency can be raised.

公开(公告)号：US20240275982A1

公开(公告)日：2024-08-15

申请号：US18648083

申请日：2024-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

Abstract: Provided is an image decoding method performed by a decoding apparatus including deriving a temporary reference motion vector for a current block included in a current picture, deriving a reference motion vector for the current block by applying clipping to the temporary reference motion vector, deriving a motion vector for the current block based on the reference motion vector, deriving a predicted block for the current block based on the motion vector for the current block, and generating a reconstructed picture for the current picture based on the predicted block for the current block, wherein a number of bits of a binary code representing the reference motion vector is less than a number of bits of a binary code representing the temporary reference motion vector.

公开(公告)号：US12058339B2

公开(公告)日：2024-08-06

申请号：US17977306

申请日：2022-10-31

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/176 ,  H04N19/52

Abstract: According to embodiments of the present document, a prediction procedure may be performed for image/video coding, and the prediction procedure may include symmetric motion vector differences (SMVDs) and merge mode motion vector differences (MMVDs) according to an inter prediction. The inter prediction may be performed on the basis of reference pictures of a current picture, and types (e.g., a long term reference picture, a short term reference picture, etc.) of the reference pictures may be considered for the inter prediction. Therefore, performance and coding efficiency in the prediction procedure can be improved.

公开(公告)号：US20240259566A1

公开(公告)日：2024-08-01

申请号：US18633256

申请日：2024-04-11

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/176 ,  H04N19/52

Abstract: According to embodiments of the present document, a prediction procedure may be performed for image/video coding, and the prediction procedure may include symmetric motion vector differences (SMVDs) and merge mode motion vector differences (MMVDs) according to an inter prediction. The inter prediction may be performed on the basis of reference pictures of a current picture, and types (e.g., a long term reference picture, a short term reference picture, etc.) of the reference pictures may be considered for the inter prediction. Therefore, performance and coding efficiency in the prediction procedure can be improved.

公开(公告)号：US12010323B2

公开(公告)日：2024-06-11

申请号：US18128400

申请日：2023-03-30

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

Abstract: Provided is an image decoding method performed by a decoding apparatus including deriving a temporary reference motion vector for a current block included in a current picture, deriving a reference motion vector for the current block by applying clipping to the temporary reference motion vector, deriving a motion vector for the current block based on the reference motion vector, deriving a predicted block for the current block based on the motion vector for the current block, and generating a reconstructed picture for the current picture based on the predicted block for the current block, wherein a number of bits of a binary code representing the reference motion vector is less than a number of bits of a binary code representing the temporary reference motion vector.

公开(公告)号：US11997265B2

公开(公告)日：2024-05-28

申请号：US17620936

申请日：2020-06-18

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon Jang

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

Abstract: According to the disclosure of the present document, filter length can be determined on the basis of the distance between block boundaries in a deblocking filtering process, the deblocking filtering can be performed on the basis of the filter length, and thereby, the picture quality of the image/video can be enhanced, and the effects of improved subjective picture quality relative to complexity and simplification of H/W design can be obtained.

公开(公告)号：US11991385B2

公开(公告)日：2024-05-21

申请号：US18132225

申请日：2023-04-07

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/109 ,  H04N19/132 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/573 ,  H04N19/70

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/109 ,  H04N19/132 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/573 ,  H04N19/70

Abstract: According to embodiments according to the present document, merge mode motion vector differences (MMVD) and symmetric motion vector differences (SMVD) may be performed on the basis of reference picture types and, in particular, short-term reference pictures may be used. Accordingly, prediction performance and coding efficiency in an inter prediction mode may be increased.

公开(公告)号：US11985315B2

公开(公告)日：2024-05-14

申请号：US17987220

申请日：2022-11-15

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon Jang

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: receiving prediction mode information about a current block; receiving intra sub-partitions (ISP)-related information about the current block on the basis of the size and the maximum conversion block size of the current block; deriving an intra prediction mode of the current block on the basis of the prediction mode information; and generating a prediction sample of the current block on the basis of the intra prediction mode and the ISP-related information.

公开(公告)号：US11968355B2

公开(公告)日：2024-04-23

申请号：US17665413

申请日：2022-02-04

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/85

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/85

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: constructing an AMVP candidate list comprising at least one AMVP candidate for a current block; deriving an HMVP candidate list for the current block that includes HMVP candidates for the current block; selecting at least one HMVP candidate among the HMVP candidates in the HMVP candidate list; deriving an updated AMVP candidate list by adding the at least one HMVP candidate to the AMVP candidate list; deriving motion information for the current block on the basis of the updated AMVP candidate list; deriving prediction samples for the current block on the basis of the motion information for the current block; and generating reconstruction samples for the current block on the basis of the prediction samples for the current block.

公开(公告)号：US11962756B2

公开(公告)日：2024-04-16

申请号：US17420553

申请日：2020-01-03

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Junghak Nam

IPC: H04N19/174 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

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

Abstract: A method and device for decoding video data are disclosed. More specifically, a method of decoding video data may comprise: configuring a block vector candidate list of a current block to which an intra block copy (IBC) prediction mode is applied, the IBC mode referring to another block in a current picture; and generating a prediction sample of the current block based on a block vector included in the block vector candidate list. Configuring the block vector candidate list comprises: configuring the block vector candidate list from a spatial neighboring block to which the IBC prediction mode is applied; and modifying the block vector candidate list based on an history-based motion vector prediction (HMVP) candidate to which the IBC prediction mode is applied when a number of current candidates of the block vector candidate list is smaller than a maximum candidate number.