公开(公告)号：US11102478B2

公开(公告)日：2021-08-24

申请号：US17069486

申请日：2020-10-13

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Lee

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

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：US11089317B2

公开(公告)日：2021-08-10

申请号：US16636263

申请日：2018-08-03

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Lee

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

Abstract: The present disclosure provides a method for decoding a video signal including a current block based on an affine motion prediction mode (affine mode, AF mode), the method including: checking whether the AF mode is applied to the current block, the AF mode representing a motion prediction mode using an affine motion model; checking whether an AF4 mode is used when the AF mode is applied to the current block, the AF4 mode representing a mode in which a motion vector is predicted using four parameters constituting the affine motion model; generating a motion vector predictor using the four parameters when the AF4 mode is used and generating a motion vector predictor using six parameters constituting the affine motion model when the AF4 mode is not used; and obtaining a motion vector of the current block based on the motion vector predictor.

公开(公告)号：US11057640B2

公开(公告)日：2021-07-06

申请号：US16767925

申请日：2018-11-28

Applicant: LG ELECTRONICS INC.

Inventor： Naeri Park ,  Seethal Paluri ,  Junghak Nam ,  Jungdong Seo ,  Jaeho Lee ,  Hyeongmoon Jang

IPC: H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186

Abstract: A video decoding method performed by a decoding apparatus includes obtaining information regarding inter-prediction of a current block via a bitstream; forming an MVP candidate list based on neighbouring blocks of the current block; deriving costs with respect to MVP candidates that are included in the MVP candidate list; deriving a revised MVP candidate list based on the costs with respect to the MVP candidates; deriving MVP of the current block based on the revised MVP candidate list; deriving a motion vector of the current block based on the MVP and MVD of the current block; and performing prediction on the current block based on a reference picture index and the motion vector of the current block. The information regarding inter-prediction includes the reference picture index and the MVD.

公开(公告)号：US10986367B2

公开(公告)日：2021-04-20

申请号：US16346775

申请日：2016-11-04

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Lee

IPC: H04N19/577 ,  H04N19/172 ,  H04N19/573 ,  H04N19/52

Abstract: Disclosed is a method for processing an image based on an inter prediction and an apparatus for the same. Particularly, the method may include generating a bi-directional predictor of each pixel of a current block by performing a bi-directional inter prediction based on a motion vector of the current block; deriving a first motion vector from a window area of a specific size in a first reference picture for a current pixel, and deriving a second motion vector from a window area of a specific size in a second reference picture for the current pixel; deriving a first predictor for the current pixel using the first motion vector, and deriving a second predictor for the current pixel using the second motion vector; and generating a third predictor of each pixel of the current block by performing a weighted sum of the first predictor and the second predictor.

公开(公告)号：US10958931B2

公开(公告)日：2021-03-23

申请号：US16301082

申请日：2016-05-11

Applicant: LG Electronics Inc.

Inventor： Jaeho Lee

IPC: H04N19/52 ,  H04N19/11 ,  H04N19/573 ,  H04N19/176 ,  H04N19/513 ,  H04N19/577

Abstract: According to the present invention, a video decoding method comprises the steps of: deriving two motion vectors (MVs) for a current block; determining a super sample from among samples in the current block; deriving a refined motion vector and a first refined prediction sample for the super sample on the basis of the two MVs; deriving a second refined prediction sample for a nonsuper sample on the basis of the refined motion vector, wherein the non-super sample is a sample that is not the super sample from among the samples; and generating reconstructed samples on the basis of the first refined prediction sample and the second refined prediction sample. According to the present invention, a more accurate refined motion vector in a sample unit of a current block can be derived, and inter prediction efficiency can be significantly improved.

公开(公告)号：US20200329236A1

公开(公告)日：2020-10-15

申请号：US16913731

申请日：2020-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jaeho Lee ,  Jangwon Choi ,  Jungdong Seo ,  Jin Heo

IPC: H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A method by which a decoding device performs image decoding, according to the present invention, comprises the steps of: deriving an intra prediction mode of a current block; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving reference samples for prediction of a target sample among the neighboring samples on the basis of the position of the target sample of the current block and the prediction angle of the intra prediction mode; determining an interpolation filter for the target sample; and deriving the prediction sample of the target sample on the basis of the interpolation filter and the reference samples.

公开(公告)号：US10805631B2

公开(公告)日：2020-10-13

申请号：US16335116

申请日：2017-09-22

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Lee ,  Junghak Nam ,  Jaehyun Lim

IPC: H04N19/577 ,  H04N19/122 ,  H04N19/176 ,  H04N19/96 ,  H04N19/567 ,  H04N19/70 ,  H04N19/192 ,  H04N19/109 ,  H04N19/11 ,  H04N19/136

Abstract: The present invention relates to a method for performing bi-prediction using a template-based weight, comprising the steps of: determining a template region for performing bi-prediction of a current block; calculating an uncorrelation factor on the basis of the template region, wherein the uncorrelation factor denotes a value indicating the uncorrelation between a template of the current block and a template of a reference block; determining a first weight parameter of the current block on the basis of the uncorrelation factor; and obtaining a first prediction value of the current block using the weight parameter.

公开(公告)号：US10798385B2

公开(公告)日：2020-10-06

申请号：US16096262

申请日：2017-02-09

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Lee

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/577 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52

Abstract: An image decoding method performed by a decoding apparatus according to the present invention is characterised by comprising the steps of: deriving a reference picture list 0 (L0) and a reference picture list 1 (L1); deriving two motion vectors (MV) for a current block, wherein the two MVs include MVL0 for the L0 and MVL1 for the L1; determining whether to apply BIO prediction that derives motion vectors for each sample in the current block based on the MVL0 and the MVL1; deriving motion vectors for each sample in the current block based on the MVL0 and the MVL1 if it is determined to apply the BIO prediction; and deriving a prediction sample based on the motion vectors for each sample.

公开(公告)号：US10560713B2

公开(公告)日：2020-02-11

申请号：US15762965

申请日：2016-01-22

Applicant: LG Electronics Inc.

Inventor： Jaeho Lee

IPC: H04N19/513 ,  H04N19/523 ,  H04N19/52 ,  H04N19/176

Abstract: An inter prediction method performed by a decoding apparatus includes: receiving information on a motion vector difference (MVD) in units of integer samples; deriving a first motion vector predictor (MVP) in units of fraction samples on the basis of neighboring blocks of a current block; deriving a second MVP in units of integer samples on the basis of the first MVP; determining a first motion vector (MV) in units of integer samples for the current block on the basis of the second MVP and the MVD; determining a second MV in units of fraction samples for the current block on the basis of the first MVP and the first MV; and generating a prediction sample for the current block on the basis of the second MV. The present invention is capable of increasing the accuracy of the MV while reducing the amount of data allocated to the MVD.

公开(公告)号：US10194478B2

公开(公告)日：2019-01-29

申请号：US14888215

申请日：2014-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Lee ,  Dongcheol Kim ,  Hyeonjae Lee ,  Jinpil Kim ,  Byungjoo Lee ,  Koh Choi ,  Inhwan Choi ,  Minsoo Lee

IPC: H04M1/725 ,  H04W40/24 ,  H04W48/14 ,  H04W48/16 ,  H04W76/10 ,  H04W76/15

Abstract: A method for performing a docking service using Wi-Fi by a wireless dockee (WD), includes transmitting a probe request including a docking information element (IE) 1 for discovering to docking service to a wireless docking center (WDC); receiving a probe response including a docking IE 2 from the wireless docking center (WDC) which has received the probe request; and performing a docking connection with the wireless docking center (WDC) based on the received probe response, wherein the docking IE 1 includes at least one of a device name parameter indicating a name of a device, a device Identifier parameter for identifying a device, or a docking information request parameter indicating a command of a docking service discovery.