公开(公告)号：US20220368893A1

公开(公告)日：2022-11-17

申请号：US17870544

申请日：2022-07-21

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: 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：US11503315B2

公开(公告)日：2022-11-15

申请号：US16325994

申请日：2016-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Sunmi Yoo ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82

Abstract: The present invention provides a method for decoding a video signal, which includes: generating a first prediction block according to a prediction mode of a current block; checking the prediction mode of a neighboring block adjacent to the current block; generating a second prediction block based on the prediction mode of the neighboring block; generating a final prediction block by applying a weight to the first prediction block and the second prediction block; and reconstructing the video signal by using the final prediction block.

公开(公告)号：US11457234B2

公开(公告)日：2022-09-27

申请号：US17283926

申请日：2019-10-08

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon Jang ,  Junghak Nam ,  Jaehyun Lim

IPC: H04N19/52 ,  H04N19/132 ,  H04N19/176 ,  H04N19/31

Abstract: A method for image decoding performed by a decoding apparatus according to the present disclosure comprises the steps of: deriving an ATMVP candidate for a current block; deriving merge candidates for the current block; deriving prediction samples for the current block on the basis of the merge candidates and the ATMVP candidate; and deriving reconstruction samples for the current block on the basis of the prediction samples, wherein the ATMVP candidate is a spatial neighboring block spatially adjacent to the current block.

公开(公告)号：US11457209B2

公开(公告)日：2022-09-27

申请号：US17550847

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 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：US11425373B2

公开(公告)日：2022-08-23

申请号：US17152123

申请日：2021-01-19

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Junghak Nam ,  Jaehyun Lim ,  Jin Heo

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159

Abstract: Disclosed are an intra-prediction mode-based image processing method and a device therefor. Particularly, a method for processing an image on the basis of an intra-prediction mode may comprise the steps of: configuring a reference sample to be used for prediction of a current block on the basis of width information and height information of the current block when the current block is a non-square block; deriving an intra-prediction mode of the current block; and generating a prediction sample of the current block by using the reference sample on the basis of the intra-prediction mode of the current block.

公开(公告)号：US20220116590A1

公开(公告)日：2022-04-14

申请号：US17555249

申请日：2021-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Naeri Park ,  Seunghwan Kim

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

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：US20220086475A1

公开(公告)日：2022-03-17

申请号：US17420063

申请日：2020-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang

IPC: H04N19/513 ,  H04N19/577 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: determining whether a temporal motion information candidate is available for a current block; deriving motion information for the current block on the basis of whether the temporal motion information candidate is available; generating prediction samples for the current block on the basis of the motion information; and generating reconstruction samples on the basis of the prediction samples, wherein whether the temporal motion information candidate is available is determined on the basis of available flag information for the temporal motion information candidate, which indicates whether the temporal motion information candidate is available for inter prediction.

公开(公告)号：US11190790B2

公开(公告)日：2021-11-30

申请号：US17044536

申请日：2019-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang

IPC: H04N19/00 ,  H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A method for parallel processing of color components of a video signal and an apparatus therefor are disclosed. Specifically, there is provided a method for decoding images based on an intra prediction mode, the method comprising: parsing a syntax element indicating whether a CCLM (cross-component linear model) intra prediction on a current chroma block is disabled or not; deriving an intra prediction mode applied to the current chroma block; and generating a prediction sample for the current chroma block based on the intra prediction mode, wherein, when the CCLM intra prediction is disabled, the intra prediction mode is derived in a predetermined first prediction mode set, when the CCLM intra prediction is not disabled, the intra prediction mode is derived in a predetermined second prediction mode set, and the second prediction mode set includes intra prediction modes included in the first prediction mode set and the CCLM intra prediction mode.

公开(公告)号：US11166036B2

公开(公告)日：2021-11-02

申请号：US16338344

申请日：2017-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Hyeongmoon Jang

IPC: H04N19/44 ,  H04N19/176 ,  H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/46

Abstract: Disclosed are an image processing method and an apparatus therefor. Specifically, the image processing method comprises the steps of: obtaining an intra prediction mode; obtaining a reference sample using a neighboring sample of the current block; determining whether to perform filtering on the reference sample; filtering the reference sample if it is determined to perform the filtering; and generating a prediction block using the reference sample or the filtered reference sample on the basis of the prediction mode, wherein the current block is a non-square block, the reference sample comprises a left reference sample and a top reference sample, and whether to perform the filtering is determined on the basis of at least one of a current block parameter or a surrounding block parameter.

公开(公告)号：US11140409B2

公开(公告)日：2021-10-05

申请号：US16861579

申请日：2020-04-29

Applicant: LG Electronics Inc.

Inventor： Naeri Park ,  Junghak Nam ,  Hyeongmoon Jang

IPC: H04N19/52 ,  H04N19/577 ,  H04N19/176 ,  H04N19/56 ,  H04N19/70 ,  H04N19/139

Abstract: A video decoding method includes deriving an L0 motion vector and an L1 motion vector for a current block; deriving a refined L0 motion vector and a refined L1 motion vector, by applying DMVR to the current block based on DMVR flag information; deriving L0 prediction samples of the current block based on the refined L0 motion vector and L1 prediction samples of the current block based on the refined L1 motion vector; deriving prediction samples for the current block based on the L0 prediction samples and the L1 prediction samples, by applying BDOF to the current block based on BDOF flag information; and generating reconstruction samples for the current block based on the prediction samples, in which the DMVR flag information is derived based on a predetermined DMVR application condition, and the BDOF flag information is derived based on a predetermined BDOF application condition.