公开(公告)号：US11533475B2

公开(公告)日：2022-12-20

申请号：US17555249

申请日：2021-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Naeri Park ,  Seunghwan Kim

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/50 ,  H04N19/70

Abstract: A decoding method performed by a decoding device, according to the present document, may comprise the steps of: acquiring a sequence parameter set from a bitstream; acquiring a combined inter-picture merge and intra-picture prediction (CIIP) enable flag from the sequence parameter set; determining, on the basis of the CIIP enable flag and the size of a current block, whether a regular merge flag is included in the bitstream; parsing the regular merge flag in the bitstream on the basis that a condition based on the CIIP enable flag and a condition based on the size of the current block are satisfied; generating prediction samples of the current block on the basis of the regular merge flag; and generating a restoration picture on the basis of the prediction samples.

公开(公告)号：US20220377347A1

公开(公告)日：2022-11-24

申请号：US17863829

申请日：2022-07-13

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Seunghwan Kim ,  Junghak Nam ,  Jaehyun Lim ,  Hyeongmoon Jang

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

Abstract: According to an embodiment disclosed in the present document, it is possible to derive a history-based motion vector prediction (HMVP) buffer for a current block based on a history, and to derive motion information of the current block based on an HMVP candidate included in the HMVP buffer, thereby increasing inter prediction efficiency.

公开(公告)号：US11445184B2

公开(公告)日：2022-09-13

申请号：US17550476

申请日：2021-12-14

Applicant: LG Electronics Inc.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: 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：US20220191552A1

公开(公告)日：2022-06-16

申请号：US17688533

申请日：2022-03-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Junghak Nam

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/176 ,  H04N19/85

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: generating a restoration picture on the basis of prediction samples of a coding block; deriving a boundary strength (BS) for a boundary of the coding block in the restoration picture; performing deblocking filtering on the boundary of the coding block on the basis of the boundary strength; and deriving a modified restoration picture for the restoration picture on the basis of the deblocking filtering, wherein the boundary strength is derived on the basis of a prediction mode of a first block and a second block that are adjacent to the boundary of the coding block, and the prediction mode of the first block or the second block is derived on the basis of whether the prediction mode of the first block or the second block is a current picture referencing (CPR) mode to be coded in reference to a current picture.

公开(公告)号：US11356703B2

公开(公告)日：2022-06-07

申请号：US17183009

申请日：2021-02-23

Applicant: LG ELECTRONICS INC.

Inventor： Junghak Nam ,  Seunghwan Kim ,  Hyeongmoon Jang ,  Jaehyun Lim

IPC: H04N19/64 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks.

公开(公告)号：US11284083B2

公开(公告)日：2022-03-22

申请号：US17353137

申请日：2021-06-21

Applicant: LG Electronics Inc.

Inventor： Ling Li ,  Jaehyun Lim ,  Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

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

Abstract: A video decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: receiving a bitstream including information about merge data of a current block; checking mh intra flag information for mh intra prediction which is included in the information about the merge data; checking information about a merge triangle prediction on the basis of a checking result that a value of the mh intra flag information is related to checking the information about the merge triangle prediction included in the information about the merge data; deriving prediction samples for the current block on the basis of a result of checking the information about the merge triangle prediction; and generating a reconstructed picture on the basis of the prediction samples.

公开(公告)号：US20210176499A1

公开(公告)日：2021-06-10

申请号：US17183009

申请日：2021-02-23

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Seunghwan Kim ,  Hyeongmoon Jang ,  Jaehyun Lim

IPC: H04N19/64 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks.

公开(公告)号：US11025945B2

公开(公告)日：2021-06-01

申请号：US16793789

申请日：2020-02-18

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Seunghwan Kim ,  Junghak Nam ,  Jaehyun Lim ,  Hyeongmoon Jang

IPC: H04N19/513 ,  H04N19/115 ,  H04N19/176

Abstract: An image decoding method performed by a decoding apparatus, includes deriving a history-based motion vector prediction (HMVP) buffer for a current block based on a history, and deriving motion information of the current block based on an HMVP candidate included in the HMVP buffer, thereby increasing inter prediction efficiency.

公开(公告)号：US20210120236A1

公开(公告)日：2021-04-22

申请号：US17138245

申请日：2020-12-30

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang ,  Jaeho Lee

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/423 ,  H04N19/533 ,  H04N19/70

Abstract: According to an embodiment disclosed in the present specification, a history-based motion vector prediction (HMVP) candidate set with respect to a current block may be derived based on a history, the HMVP candidate set may be updated or initialized according to a condition, and motion information of the current block may be derived based on the HMVP candidate set, through which inter prediction efficiency can be improved.

公开(公告)号：US10979714B2

公开(公告)日：2021-04-13

申请号：US16330329

申请日：2017-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Jaehyun Lim

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/117 ,  H04N19/11 ,  H04N19/44 ,  H04N19/593 ,  H04N19/96

Abstract: Disclosed are an image coding/decoding method and an apparatus therefor. Specifically, a method for decoding an image by a decoding apparatus may include: deriving an intra prediction mode of a current block; configuring reference samples with samples neighboring to an upper end and samples neighboring to a left side of the current block; generating a prediction block of the current block by using the reference sample; and filtering a sample adjacent to a top boundary and/or a left boundary of the current block among the prediction samples, in which when the current block is a non-square block, whether to filter the sample adjacent to the top boundary of the current block may be determined by considering only a width of the current block and whether to filter the sample adjacent to the left boundary of the current block may be determined by considering only a height of the current block.