公开(公告)号：US11109028B2

公开(公告)日：2021-08-31

申请号：US17117785

申请日：2020-12-10

Applicant: LG Electronics Inc.

Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61

Abstract: Embodiments of the disclosure provide a method and apparatus for processing video signals. An image signal decoding method according to an embodiment of the disclosure comprises the steps of: determining, on the basis of the height and width of a current block, an input length and output length of a non-separable transform; determining a non-separable transform matrix corresponding to the input length and output length of the non-separable transform; and applying the non-separable transform matrix to the current block, wherein, when the height and width of the current block are 4 each, the input length and output length of the non-separable transform are determined to be 8 and 16 respectively.

公开(公告)号：US11082694B2

公开(公告)日：2021-08-03

申请号：US16901818

申请日：2020-06-15

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/122 ,  H04N19/167 ,  H04N19/176 ,  H04N19/61

Abstract: The embodiments of the present disclosure provides a method and apparatus for video signal processing. A method for decoding an image signal according to an embodiment of the present disclosure may include determining an input length and an output length of a non-separable transform based on a height and a width of a current block; determining a non-separable transform matrix corresponding to the input length and the output length of a non-separable transform; and applying the non-separable transform matrix to coefficients by a number of the input length in the current block, wherein the height and the width of a current block is greater than or equal to 8, wherein, if each of the height and the width of a current block is equal to 8, the input length of the non-separable transform is determined as 8.

公开(公告)号：US10979738B2

公开(公告)日：2021-04-13

申请号：US16605447

申请日：2018-04-03

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：US10924736B2

公开(公告)日：2021-02-16

申请号：US16898928

申请日：2020-06-11

Applicant: LG Electronics Inc.

Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/122 ,  H04N19/61 ,  H04N19/159 ,  H04N19/176

Abstract: Embodiments of the disclosure provide a method and apparatus for processing video signals. An image signal decoding method according to an embodiment of the disclosure comprises the steps of: determining, on the basis of the height and width of a current block, an input length and output length of a non-separable transform; determining a non-separable transform matrix corresponding to the input length and output length of the non-separable transform; and applying the non-separable transform matrix to the current block, wherein, when the height and width of the current block are 4 each, the input length and output length of the non-separable transform are determined to be 8 and 16 respectively.

公开(公告)号：US10917639B2

公开(公告)日：2021-02-09

申请号：US16324452

申请日：2017-02-07

Applicant: LG Electronics Inc.

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

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

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：US10798400B2

公开(公告)日：2020-10-06

申请号：US15754720

申请日：2016-02-29

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Naeri Park ,  Jungdong Seo ,  Junghak Nam

IPC: H04N19/51 ,  H04N19/53 ,  H04N19/70 ,  H04N19/513 ,  H04N19/523 ,  H04N19/176

Abstract: Disclosed are an inter prediction mode-based image processing method and an apparatus therefor. Particularly, a method for processing an image on the basis of inter prediction may comprise the steps of: determining whether a motion vector scale adaptation is applied to a block; up-scaling a down-scaled MVD (Motion Vector Difference) when the motion vector scale adaptation is applied to the block; deriving a MV (Motion Vector) for the block, using the up-scaled MVD and a MVP (Motion Vector Predictor); and generating a predictive block of the block, using the derived MV.

公开(公告)号：US10778975B2

公开(公告)日：2020-09-15

申请号：US16443243

申请日：2019-06-17

Applicant: LG Electronics Inc.

Inventor： Seungwook Park ,  Jaehyun Lim ,  Yongjoon Jeon ,  Chulkeun Kim ,  Jungsun Kim ,  Naeri Park ,  Hendry Hendry ,  Byeongmoon Jeon ,  Joonyoung Park

IPC: H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/136 ,  H04N19/82 ,  H04N19/86

Abstract: A deblocking filtering method, a boundary strength (bS) deriving method, and encoding/decoding method and apparatus using the methods are provided. The bS deriving method includes the steps of: deriving a boundary of a deblocking filtering unit block which is a unit block on which deblocking filtering is performed; and setting a bS for each bS setting unit block in the deblocking filtering unit block. Here, the step of setting the bS includes setting a bS value of a target boundary corresponding to the boundary of the deblocking filtering unit block as the bS setting unit block.

公开(公告)号：US10764598B2

公开(公告)日：2020-09-01

申请号：US16465895

申请日：2016-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong Seo ,  Jaehyun Lim

IPC: H04N11/02 ,  H04N19/513 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/44 ,  H04N19/109 ,  H04N19/139 ,  H04N19/13 ,  H04N19/172 ,  H04N19/91

Abstract: An image decoding method performed by a decoding device according to the present invention comprises the steps of: acquiring information on inter prediction of a target block through a bit stream; deriving motion information of the target block on the basis of the information on inter prediction; deriving a prediction sample by performing inter prediction for the target block on the basis of the motion information; generating a reconstruction block on the basis of the prediction sample; deriving modified motion information of the target block on the basis of the reconstruction block; and updating the motion information of the target block on the basis of the modified motion information. According to the present invention, modified motion information of the target block can be calculated, and the motion information of the target block can be updated on the basis of the modified motion information, so that the overall coding efficiency can be improved.

公开(公告)号：US10742997B2

公开(公告)日：2020-08-11

申请号：US16540540

申请日：2019-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun Lim ,  Jungsun Kim ,  Seungwook Park ,  Jaewon Sung ,  Byeongmoon Jeon ,  Joonyoung Park ,  Yongjoon Jeon ,  Younghee Choi

IPC: H04N7/12 ,  H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/593 ,  H04N19/11 ,  H04N19/463 ,  H04N19/14 ,  H04N19/154 ,  H04N19/182 ,  H04N19/50 ,  H04N19/513 ,  H04N19/59 ,  H04N19/18

Abstract: A method and apparatus for signaling and receiving a video signal for processing is disclosed. Methods for determining a most probable mode for predicting a current prediction block are provided as well as new methods for grouping intra prediction modes into prediction groups. Methods for predicting a prediction block of video data as well as signaling intra prediction modes are also provided.

公开(公告)号：US10728577B2

公开(公告)日：2020-07-28

申请号：US16434922

申请日：2019-06-07

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Seungwook Park ,  Yongjoon Jeon ,  Jungsun Kim ,  Hendry Hendry ,  Byeongmoon Jeon ,  Joonyoung Park ,  Chulkeun Kim ,  Naeri Park

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/593 ,  H04N19/174 ,  H04N19/44 ,  H04N19/463 ,  H04N19/11 ,  H04N19/176 ,  H04N19/426 ,  H04N19/129 ,  H04N19/625 ,  H04N19/82 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/96 ,  H04N19/13 ,  H04N19/159 ,  H04N19/61

Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the plurality of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.