公开(公告)号：US20240388696A1

公开(公告)日：2024-11-21

申请号：US18785438

申请日：2024-07-26

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed is an inter prediction method which includes deriving control points (CPs) for the current block, wherein the CPs include a first CP and a second CP, deriving a first motion vector predictor (MVP) for the first CP and a second MVP for the second CP based on neighboring blocks of the current block, decoding a first motion vector difference (MVD) for the first CP, decoding a difference of two MVDs (DMVD) for the second CP, deriving a first motion vector (MV) for the first CP based on the first MVP and the first MVD, deriving a second MV for the second CP based on the second MVP and the DMVD for the second CP, and generating a predicted block for the current block based on the first MV and the second MV.

公开(公告)号：US20240373037A1

公开(公告)日：2024-11-07

申请号：US18775284

申请日：2024-07-17

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: Disclosed are a method for decoding a video signal and an apparatus therefor. Specifically, a method for decoding an image based on an inter-prediction mode may include: configuring a merge candidate list by using motion information of a spatial candidate and a temporal candidate adjacent to a current block; parsing a first syntax element indicating a particular candidate applied to inter-prediction of the current block among a predefined number of candidates in the merge candidate list; deriving a refined candidate by adding a motion vector offset to a motion vector of a candidate indicated by the first syntax element; and generating a prediction block of the current block by using the motion information of the refined candidate.

公开(公告)号：US20240314351A1

公开(公告)日：2024-09-19

申请号：US18672727

申请日：2024-05-23

Applicant: LG Electronics Inc.

Inventor： Jaeho LEE ,  Seunghwan KIM

IPC: H04N19/52 ,  H04N19/132 ,  H04N19/139 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/132 ,  H04N19/139 ,  H04N19/577

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises: a step of deriving reference picture list 0 (L0) and reference picture list 1 (L1); a step of deriving two motion vectors (MV) for a current block, the two MVs including MVL0 for the L0 and MVL1 for the L1; a step of determining whether to apply bi-prediction optical flow (BIO) prediction for deriving refined motion vectors by sub-blocks to the current block; a step of deriving a refined motion vector for a sub-block of the current block based on the MVL0 and MVL1, if the BIO prediction is applied to the current block; and a step of deriving a prediction sample based on the refined motion vector.

公开(公告)号：US20230370626A1

公开(公告)日：2023-11-16

申请号：US18224967

申请日：2023-07-21

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70

Abstract: Disclosed are a method for processing a video signal by using an affine motion prediction and an apparatus thereof. A method for processing a video signal according to the present disclosure may include: adding, to an affine candidate list, an affine coded block coded in an affine prediction mode among neighbor blocks of a current block; obtaining a syntax element indicating a candidate used for the affine motion prediction of the current block in the affine candidate list; deriving a control point motion vector predictor of the current block based on an affine motion model of the candidate indicated by the syntax element; deriving a control point motion vector of the current block by adding a control point motion vector difference to the control point motion vector predictor; and generating a prediction block of the current block by using the control point motion vector of the current block.

公开(公告)号：US20230239492A1

公开(公告)日：2023-07-27

申请号：US18128757

申请日：2023-03-30

Applicant: LG Electronics Inc.

Inventor： Jaeho LEE ,  Seunghwan KIM

IPC: H04N19/52 ,  H04N19/132 ,  H04N19/139 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/132 ,  H04N19/139 ,  H04N19/577

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises: a step of deriving reference picture list 0 (L0) and reference picture list 1 (L1); a step of deriving two motion vectors (MV) for a current block, the two MVs including MVL0 for the L0 and MVL1 for the L1; a step of determining whether to apply bi-prediction optical flow (BIO) prediction for deriving refined motion vectors by sub-blocks to the current block; a step of deriving a refined motion vector for a sub-block of the current block based on the MVL0 and MVL1, if the BIO prediction is applied to the current block; and a step of deriving a prediction sample based on the refined motion vector.

公开(公告)号：US20230179761A1

公开(公告)日：2023-06-08

申请号：US18104477

申请日：2023-02-01

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed is an inter prediction method which includes deriving control points (CPs) for the current block, wherein the CPs include a first CP and a second CP, deriving a first motion vector predictor (MVP) for the first CP and a second MVP for the second CP based on neighboring blocks of the current block, decoding a first motion vector difference (MVD) for the first CP, decoding a difference of two MVDs (DMVD) for the second CP, deriving a first motion vector (MV) for the first CP based on the first MVP and the first MVD, deriving a second MV for the second CP based on the second MVP and the DMVD for the second CP, and generating a predicted block for the current block based on the first MV and the second MV.

公开(公告)号：US20210375055A1

公开(公告)日：2021-12-02

申请号：US17278011

申请日：2018-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Dukyung Jung ,  Kihyung LEE ,  Jaeho LEE

IPC: G06T19/00 ,  G06T3/40 ,  G06K9/00 ,  G08G1/0968 ,  G01C21/36

Abstract: Disclosed is a mobile terminal that provides an augmented reality navigation screen in a state of being hold in a vehicle, the mobile terminal including: at least one camera configured to obtain a front image; a display; and at least one processor configured to calibrate the front image, and to drive an augmented reality navigation application so that the augmented reality navigation screen including at least one augmented reality (AR) graphic object and the calibrated front image is displayed on the display.

公开(公告)号：US20210235100A1

公开(公告)日：2021-07-29

申请号：US15734362

申请日：2019-06-04

Applicant: LG Electronics, Inc.

Inventor： Jaeho LEE

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/70 ,  H04N19/176

Abstract: Disclosed are a method for processing a video signal by using an affine motion prediction and an apparatus thereof. A method for processing a video signal according to the present disclosure may include: adding, to an affine candidate list, an affine coded block coded in an affine prediction mode among neighbor blocks of a current block; obtaining a syntax element indicating a candidate used for the affine motion prediction of the current block in the affine candidate list; deriving a control point motion vector predictor of the current block based on an affine motion model of the candidate indicated by the syntax element; deriving a control point motion vector of the current block by adding a control point motion vector difference to the control point motion vector predictor; and generating a prediction block of the current block by using the control point motion vector of the current block.

公开(公告)号：US20210058628A1

公开(公告)日：2021-02-25

申请号：US17093268

申请日：2020-11-09

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE

IPC: H04N19/159 ,  H04N19/70 ,  H04N19/176 ,  H04N19/52 ,  H04N19/105

Abstract: Disclosed are a method for decoding a video signal and an apparatus therefor. Specifically, a method for decoding an image based on an inter-prediction mode may include: configuring a merge candidate list by using motion information of a spatial candidate and a temporal candidate adjacent to a current block; parsing a first syntax element indicating a particular candidate applied to inter-prediction of the current block among a predefined number of candidates in the merge candidate list; deriving a refined candidate by adding a motion vector offset to a motion vector of a candidate indicated by the first syntax element; and generating a prediction block of the current block by using the motion information of the refined candidate.

公开(公告)号：US20210044797A1

公开(公告)日：2021-02-11

申请号：US17069486

申请日：2020-10-13

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed is an inter prediction method which includes deriving control points (CPs) for the current block, wherein the CPs include a first CP and a second CP, deriving a first motion vector predictor (MVP) for the first CP and a second MVP for the second CP based on neighboring blocks of the current block, decoding a first motion vector difference (MVD) for the first CP, decoding a difference of two MVDs (DMVD) for the second CP, deriving a first motion vector (MV) for the first CP based on the first MVP and the first MVD, deriving a second MV for the second CP based on the second MVP and the DMVD for the second CP, and generating a predicted block for the current block based on the first MV and the second MV.