公开(公告)号：US20200186828A1

公开(公告)日：2020-06-11

申请号：US16795115

申请日：2020-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Joonyoung PARK ,  Seungwook PARK ,  Jaehyun LIM ,  Jungsun KIM ,  Younghee CHOI ,  Jaewon SUNG ,  Byeongmoon JEON ,  Yongjoon JEON

IPC: H04N19/52 ,  H04N19/577 ,  H04N19/513 ,  H04N19/463 ,  H04N19/426 ,  H04N19/50 ,  H04N19/176 ,  H04N19/51 ,  H04N19/109 ,  H04N19/11

Abstract: A motion information storing method and a TMVP deriving method using the motion information storing method are provided. The motion information storing method includes a step of determining a representative block out of blocks of a motion data storage unit in a co-located picture with a current picture and a step of storing motion information of the representative block as motion information of the motion data storage unit, wherein the motion information of the representative block is used as motion information of the blocks included in the motion data storage unit.

公开(公告)号：US20200107015A1

公开(公告)日：2020-04-02

申请号：US16339635

申请日：2017-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong SEO ,  Jaehyun LIM

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/139 ,  H04N19/573 ,  H04N19/172

Abstract: A method for decoding an image by a decoding apparatus according to the present invention comprises the steps of: deriving first motion information of a current block in a first direction and second motion information of the current block in a second direction; deriving a first reference sample on the basis of the first motion information; deriving a second reference sample on the basis of the second motion information; deriving a first weight for the first reference sample and a second weight for the second reference sample; and generating a prediction sample of the current block by performing a weighted summation of the first and second reference samples on the basis of the first and second weights, wherein the first motion information comprises a first reference picture index and a first MV and the second motion information comprises a second reference picture index and a second MV.

公开(公告)号：US20200007891A1

公开(公告)日：2020-01-02

申请号：US16475002

申请日：2016-12-28

Applicant: LG Electronics Inc. ,  EWHA UNIVERSITY-INDUSTRY COLLABORATION FOUNDATION

Inventor： Je-Won KANG ,  Soo Kyung RYU ,  Jaehyun LIM ,  Sunmi YOO ,  Jaeho LEE ,  Min-Joo KANG

IPC: H04N19/593 ,  H04N19/174 ,  H04N19/18 ,  H04N19/132 ,  H04N19/182

Abstract: Disclosed is a method for encoding/decoding a still image or moving image based on an intra-prediction mode and an apparatus supporting the same. Particularly, a method for processing an image based on an intra prediction mode may include determining an intra prediction mode set used for an intra prediction in a current prediction processing unit among multiple intra prediction mode sets having different resolutions with each other, wherein the resolution represents a degree of distribution of the intra prediction mode in the intra prediction mode set; deriving an intra prediction mode applied to the current prediction processing unit in the determined intra prediction mode set using index information received from an encoder; and generating a prediction sample of the current prediction processing unit based on the derived intra prediction mode, and each of the intra prediction mode sets includes one or more intra prediction modes.

公开(公告)号：US20190342573A1

公开(公告)日：2019-11-07

申请号：US16513294

申请日：2019-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Joonyoung PARK ,  Seungwook PARK ,  Jaehyun LIM ,  Jungsun KIM ,  Younghee CHOI ,  Jaewon SUNG ,  Byeongmoon JEON ,  Yongjoon JEON

IPC: H04N19/52 ,  H04N19/11 ,  H04N19/426 ,  H04N19/463 ,  H04N19/109 ,  H04N19/577 ,  H04N19/176 ,  H04N19/50 ,  H04N19/513 ,  H04N19/51

Abstract: A motion information storing method and a TMVP deriving method using the motion information storing method are provided. The motion information storing method includes a step of determining a representative block out of blocks of a motion data storage unit in a co-located picture with a current picture and a step of storing motion information of the representative block as motion information of the motion data storage unit, wherein the motion information of the representative block is used as motion information of the blocks included in the motion data storage unit.

公开(公告)号：US20190342547A1

公开(公告)日：2019-11-07

申请号：US16475538

申请日：2018-01-03

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho LEE ,  Seunghwan KIM ,  Jaehyun LIM

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/139 ,  H04N19/46 ,  H04N19/96 ,  H04N19/176

Abstract: The present invention provides a method of processing a video signal including a current block using an affine prediction mode, including generating a candidate list of motion vector pairs using the motion vector of a pixel or block neighboring at least two control points of the current block, wherein the control point means a corner pixel of the current block, and the motion vector pair indicates the motion vectors of a top left corner pixel and top right corner pixel of the current block; determining a final candidate list of a predetermined number of motion vector pairs based on a divergence value of the motion vector pair, wherein the final candidate list is determined in order of smaller divergence value, and the divergence value is a value indicating similarity in the direction of motion vectors; determining the control point motion vector of the current block based on a rate-distortion cost from the final candidate list; and generating the motion vector predictor of the current block based on the control point motion vector.

公开(公告)号：US20190297348A1

公开(公告)日：2019-09-26

申请号：US16434950

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: H04N19/593 ,  H04N19/61 ,  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 ,  H04N19/174

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.

公开(公告)号：US20190246145A1

公开(公告)日：2019-08-08

申请号：US16387251

申请日：2019-04-17

Applicant: LG ELECTRONICS INC.

Inventor： Seungwook PARK ,  Jaehyun LIM ,  Yongjoon JEON ,  Chulkeun KIM ,  Jungsun KIM ,  Naeri PARK ,  Hendry HENDRY ,  Byeongmoon JEON ,  Joonyoung PARK

IPC: H04N19/86 ,  H04N19/61 ,  H04N19/60 ,  H04N19/14 ,  H04N19/117 ,  H04N19/134 ,  H04N19/176 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196 ,  H04N19/136 ,  H04N19/82

Abstract: The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same. The method for inducing the bS of the present invention comprises the steps of: inducing a boundary of a deblocking filtering unit block as a unit block for applying the deblocking filtering; and setting the bS according to each bS setting unit block within the deblocking filtering unit block, wherein the bS setting step can set a bS value for a target boundary corresponding to a boundary of the deblocking filtering unit block as the bs setting unit block

公开(公告)号：US20190200021A1

公开(公告)日：2019-06-27

申请号：US16331371

申请日：2017-08-31

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Jaehyun LIM

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/96 ,  H04N19/159 ,  H04N19/44 ,  H04N19/176

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/119 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/503 ,  H04N19/70 ,  H04N19/96

Abstract: An inter-prediction method according to the present invention comprises the steps of: deriving a movement vector of the current block; deriving a reference block for the current block on the basis of the movement vector; deriving an IC parameter on the basis of first neighboring reference samples of the reference block and second neighboring reference samples of the current block, the IC parameter comprising a scaling factor a, and an offset b; and deriving prediction samples for the current block by carrying out IC for the reference samples of the reference block on the basis of the scaling factor and offset. According to the present invention, inter-prediction efficiency can be effectively increased while reducing the amount of additional data.

公开(公告)号：US20190174128A1

公开(公告)日：2019-06-06

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

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：US20190124336A1

公开(公告)日：2019-04-25

申请号：US16225858

申请日：2018-12-19

Applicant: LG Electronics Inc.

Inventor： Seungwook PARK ,  Joonyoung PARK ,  Jungsun KIM ,  Younghee CHOI ,  Yongjoon JEON ,  Jaewon SUNG ,  Byeongmoon JEON ,  Jaehyun LIM

IPC: H04N19/139 ,  H04N19/51 ,  H04N19/56 ,  H04N19/513 ,  H04N19/61 ,  H04N19/159 ,  H04N19/105 ,  H04N19/96 ,  H04N19/167

Abstract: The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.