公开(公告)号：US20250056051A1

公开(公告)日：2025-02-13

申请号：US18926065

申请日：2024-10-24

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Junghak NAM ,  Jaehyun LIM

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/52

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: decoding, on the basis of a bitstream, an affine flag that indicates whether affine prediction is applicable to a current block and a sub-block TMVP flag that indicates whether a temporal motion vector predictor based on a sub-block of the current block is usable; determining whether to decode a predetermined merge mode flag that indicates whether to apply a predetermined merge mode to the current block, on the basis of the decoded affine flag and the decoded sub-block TMVP flag; deriving prediction samples of the current block on the basis of the determining of whether to decode the predetermined merge mode flag; and generating reconstructed samples of the current block based on the prediction samples of the current block.

公开(公告)号：US20240414327A1

公开(公告)日：2024-12-12

申请号：US18697617

申请日：2022-09-30

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Jaehyun LIM ,  Hyeongmoon JANG ,  Seunghwan KIM

IPC: H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/132 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503 ,  H04N19/593 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device includes: obtaining image information including prediction-related information from a bitstream; determining whether combined inter-picture merge and intra-picture prediction (CIIP) is applied to a current block, on the basis of the prediction-related information; deriving a prediction sample of the current block on the basis of it being determined that the CIIP is applied to the current block; and generating a reconstructed sample of the current block on the basis of the prediction sample, wherein the prediction sample of the current block is derived on the basis of an intra prediction sample and an inter prediction sample, wherein the intra prediction sample is derived on the basis of an intra prediction mode, wherein the intra prediction mode is derived on the basis of a decoder side intra mode derivation (DIMD) mode or a template-based inter mode derivation (TIMD) mode.

公开(公告)号：US20240275978A1

公开(公告)日：2024-08-15

申请号：US18647633

申请日：2024-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Jaehyun LIM ,  Junghak NAM

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/132 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

Abstract: A method for decoding an image, according to the present document, comprises: receiving a bitstream including BDPCM information; deriving residual samples for a current block on the basis of the BDPCM information; deriving prediction samples for the current block on the basis of the BDPCM information; generating a reconstructed picture on the basis of the residual samples and the prediction samples; and performing deblocking filtering on the reconstructed picture, wherein when BDPCM is applied to the current block, the deblocking filtering is not performed.

公开(公告)号：US20240267517A1

公开(公告)日：2024-08-08

申请号：US18638987

申请日：2024-04-18

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：US20240223750A1

公开(公告)日：2024-07-04

申请号：US18604697

申请日：2024-03-14

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon JANG ,  Junghak NAM

IPC: 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 (HVMP) 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.

公开(公告)号：US20240187635A1

公开(公告)日：2024-06-06

申请号：US18436948

申请日：2024-02-08

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon JANG ,  Junghak NAM ,  Naeri PARK

IPC: H04N19/513 ,  H04N19/109 ,  H04N19/136 ,  H04N19/176 ,  H04N19/587 ,  H04N19/70

CPC classification number: H04N19/513 ,  H04N19/109 ,  H04N19/136 ,  H04N19/176 ,  H04N19/587 ,  H04N19/70

Abstract: In the present disclosure, a method of decoding a video signal and a device therefor are disclosed. Specifically, a method of decoding an image based on an inter prediction mode includes deriving a motion vector of an available spatial neighboring block around a current block; deriving a collocated block of the current block based on the motion vector of the spatial neighboring block; deriving a motion vector in a sub-block unit in the current block based on a motion vector of the collocated block; and generating a prediction block of the current block using the motion vector derived in the sub-block unit, wherein the collocated block may be specified by the motion vector of the spatial neighboring block in one pre-defined reference picture.

公开(公告)号：US20240137553A1

公开(公告)日：2024-04-25

申请号：US18402108

申请日：2024-01-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Naeri PARK ,  Junghak NAM

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/587

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/587

Abstract: According to the disclosure of the present document, a subblock position for deriving a subblock unit motion vector in a subblock-based temporal motion vector prediction (sbTMVP) can be efficiently calculated, thereby enabling video/image coding efficiency to increase and a simplifying effect for hardware implementation to be obtained.

公开(公告)号：US20240129522A1

公开(公告)日：2024-04-18

申请号：US18397724

申请日：2023-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon JANG ,  Naeri PARK ,  Junghak NAM

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176

Abstract: According to the disclosure of the present document, in a subblock-based temporal motion vector prediction (sbTMVP), a position of a subblock for deriving a motion vector per subblock unit can be efficiently calculated, and thus video/image coding efficiency can be increased and hardware implementation can be simplified.

公开(公告)号：US20240064285A1

公开(公告)日：2024-02-22

申请号：US18386130

申请日：2023-11-01

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG

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

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

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

公开(公告)号：US20240048759A1

公开(公告)日：2024-02-08

申请号：US18381292

申请日：2023-10-18

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG

IPC: H04N19/577 ,  H04N19/109 ,  H04N19/159 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132

CPC classification number: H04N19/577 ,  H04N19/109 ,  H04N19/159 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132

Abstract: According to a disclosure of the present document, when the type of inter-prediction of a current block is indicated as biprediction, weight index information for a candidate within a merge candidate list or a sub-block merge candidate list may be derived, and coding efficiency may be increased.