公开(公告)号：US10721492B2

公开(公告)日：2020-07-21

申请号：US15762946

申请日：2016-09-08

Applicant: LG Electronics Inc.

Inventor： Eunyong Son ,  Jin Heo ,  Seungwook Park ,  Sehoon Yea

IPC: H04N19/61 ,  H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/44 ,  H04N19/96 ,  H04N19/196 ,  H04N19/182

Abstract: An intra prediction method includes: receiving intra prediction mode information through a bitstream; deriving an intra prediction mode of a current block as a first intra directional mode on the basis of the intra prediction mode information; deriving first neighboring samples of the current block; deriving a reference sample adjacent to a target sample in the current block on the basis of a prediction direction of the first intra directional mode; deriving second neighboring samples of a neighboring block to which the reference sample belongs; determining a modified prediction direction on the basis of a comparison between the reference sample and at least one of the second neighboring samples; and deriving a prediction value for the target sample on the basis of the modified prediction direction and the first neighboring samples.

公开(公告)号：US10681371B2

公开(公告)日：2020-06-09

申请号：US15580605

申请日：2016-06-07

Applicant: LG Electronics Inc.

Inventor： Seungwook Park

IPC: H04N19/102 ,  H04N19/137 ,  H04N19/18 ,  H04N19/51 ,  H04N19/517 ,  H04N19/86 ,  H04N19/82 ,  H04N19/176 ,  H04N19/14 ,  H04N19/117 ,  H04N19/46 ,  H04N19/583 ,  H04N19/70 ,  H04N19/159 ,  H04N19/53

Abstract: The present invention provides a method for performing deblocking filtering, comprising the steps of: identifying a transform unit (TU) boundary and a prediction unit (PU) boundary in the current block; when a neighboring PU adjacent to the current PU includes a boundary, determining an additional PU boundary extended in the boundary; determining boundary strengths (BSs) for the TU boundary, the PU boundary, and the additional PU boundary; and performing a filtering on the basis of the determined BSs.

公开(公告)号：US10666969B2

公开(公告)日：2020-05-26

申请号：US16123648

申请日：2018-09-06

Applicant: LG ELECTRONICS INC.

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

IPC: G06K9/36 ,  H04N19/52 ,  G06T9/00 ,  H04N19/176 ,  H04N19/182 ,  H04N19/159 ,  H04N19/31

Abstract: The present invention relates to a technique for encoding and decoding video data, and more particularly, to a method for performing inter-prediction in an effective manner. The present invention combines an inter-prediction method using an AMVP mode and an inter-prediction method using a merge mode so as to propose a method for using the same candidate. The method for encoding video data proposed by the present invention comprises the following steps: receiving mode information on an inter-prediction method of a current block; determining, on the basis of the received mode information, whether the interprediction method to be applied to the current block is an AMVP mode or a merge mode; and selecting a candidate to derive motion information of the current block, wherein the candidate is selected in a left region, top region and corner region of the current block and in the same position block as the current block, and the AMVP mode and the merge mode are applied on the basis of the selected candidate.

公开(公告)号：US10652551B2

公开(公告)日：2020-05-12

申请号：US16173825

申请日：2018-10-29

Applicant: LG Electronics Inc.

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

IPC: H04N19/159 ,  H04N19/52 ,  H04N19/43 ,  H04N19/436 ,  H04N19/57 ,  H04N19/105 ,  H04N19/176

Abstract: According to the present invention, an inter prediction method comprises the steps of: generating a merge candidate list for a block to be predicted, wherein the block is to correspond to a current prediction unit; deriving, on the basis of one of a plurality of merge candidates constituting the merge candidate list, motion information on the block to be predicted; and performing, on the basis of the derived motion information, a prediction on the block to be predicted so as to generate a prediction block corresponding to the current prediction unit.

公开(公告)号：US10602138B2

公开(公告)日：2020-03-24

申请号：US15755037

申请日：2016-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Eunyong Son ,  Jin Heo ,  Seungwook Park ,  Yongjoon Jeon ,  Moonmo Koo

IPC: H04N19/11 ,  H04N19/186 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593

Abstract: An intra prediction method according to the present invention comprises the steps of: acquiring information on a luma prediction mode of a current block and information on a chroma prediction mode of the current block from a bit stream; deriving a luma intra prediction mode of the current block on the basis of the information on the luma prediction mode; determining a chroma intra prediction mode of the current block on the basis of information on the luma intra prediction mode and the information on the chroma prediction mode; and generating a chroma prediction sample of the current block on the basis of the chroma intra prediction mode. According to the present invention, it is possible to reflect the difference between the ratio of the width to the height of a luma component and the ratio of the width to the height of a chroma component, and thus to more accurately perform intra prediction in units of samples and improve intra prediction performance.

公开(公告)号：US20200092573A1

公开(公告)日：2020-03-19

申请号：US16676135

申请日：2019-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Joongyoung Park ,  Sangchul Kim ,  Seungwook Park ,  Jaehyun Lim ,  Yongjoon Jeon ,  Byeongmoon Jeon ,  Younghee Choi ,  Jaewon Sung ,  Jungsun Kim ,  Jingyeong Kim ,  Taeil Chung

IPC: H04N19/513 ,  H04N19/51 ,  H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/583

Abstract: The method for deriving a temporal motion vector predictor according to the present invention comprises the steps of: selecting a reference picture for a current block; deciding a predictor block corresponding to a predetermined storage unit block, as a reference prediction unit for the current block, in the reference picture; and deriving the temporal motion vector predictor from motion information of the decided reference prediction unit. The present invention enhances image compression efficiency.

公开(公告)号：US10554980B2

公开(公告)日：2020-02-04

申请号：US15552465

申请日：2016-02-19

Applicant: LG Electronics Inc.

Inventor： Seungwook Park ,  Yongjoon Jeon

IPC: H04N19/15 ,  H04N19/159 ,  H04N19/587 ,  H04N19/59 ,  H04N19/105 ,  H04N19/107

Abstract: Disclosed is a method for processing an image on the basis of an intra-prediction mode and an apparatus therefor. The method for processing an image on the basis of an intra-prediction mode includes generating a prediction sample by performing intra-prediction on a processing block of the image, generating a sub-sampled prediction sample by sub-sampling the prediction sample, and generating an up-sampled prediction sample by up-sampling the sub-sampled reconstructed sample.

公开(公告)号：US10402674B2

公开(公告)日：2019-09-03

申请号：US15649906

申请日：2017-07-14

Applicant: LG ELECTRONICS INC.

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

IPC: G06K9/36 ,  H04N19/50 ,  H04N19/593 ,  H04N19/11 ,  H04N19/14 ,  H04N19/157 ,  H04N19/182 ,  H04N19/44 ,  H04N19/80 ,  H04N19/82

Abstract: New intra planar modes are introduced for predicting digital video data. As part of the new intra planar modes, various methods are offered for predicting a first sample within a prediction unit, where the first sample is needed for referencing to when processing the new intra planar modes. And once the first sample is successfully predicted, the new intra planar modes are able to predict a sample of video data within the prediction unit by processing a bi-linear interpolation of four previously reconstructed reference samples.

公开(公告)号：US10356414B2

公开(公告)日：2019-07-16

申请号：US15860412

申请日：2018-01-02

Applicant: LG ELECTRONICS INC.

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

IPC: H04N5/92 ,  H04N7/32 ,  G11B20/10 ,  H04N19/174 ,  G06K9/36 ,  H04N19/13 ,  H04N21/6336 ,  H04N19/91 ,  H04N19/436 ,  H04N19/124

Abstract: The present invention relates to video encoding and decoding method and apparatus, and a video encoding method according to the present invention comprises the steps of: entropy-encoding quantized transform information; and transmitting the entropy-encoded information as a bitstream, wherein the bitstream includes information indicating pieces of information to be parallel decoded in byte units.

公开(公告)号：US10321156B2

公开(公告)日：2019-06-11

申请号：US15915211

申请日：2018-03-08

Applicant: LG Electronics Inc.

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

IPC: H04N19/11 ,  H04N19/593 ,  H04N19/176 ,  H04N19/70 ,  H04N19/122 ,  H04N19/61 ,  H04N19/186 ,  H04N19/157 ,  H04N19/80 ,  H04N19/196 ,  H04N19/107 ,  H04N19/172 ,  H04N19/174 ,  H04N19/59 ,  H04N19/96

Abstract: A method for signalling an intra chroma prediction mode and a method for implementing the signalled intra chroma prediction mode, the intra chroma prediction mode taking an intropolation of previously predicted luma samples from neighboring blocks of video data to attain an intra chroma prediction of a current chroma prediction unit.