公开(公告)号：US20210250588A1

公开(公告)日：2021-08-12

申请号：US17240282

申请日：2021-04-26

Applicant: LG Electronics Inc.

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

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

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.

公开(公告)号：US20210112265A1

公开(公告)日：2021-04-15

申请号：US17129307

申请日：2020-12-21

Applicant: LG Electronics Inc.

Inventor： Jungsun KIM ,  Joonyoung PARK ,  Chulkeun KIM ,  Hendry HENDRY ,  Byeongmoon JEON

IPC: H04N19/44 ,  H04N19/463 ,  H04N19/91 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/503

Abstract: A method or coding image information, according to the present invention, comprises the steps of: binarizing according to different techniques, index values of forward prediction, backward prediction, and bidirectional prediction, depending on whether the bidirectional prediction is applied when inter-predicting a current block; and entropy coding a binarized codeword, wherein whether to apply the bidirectional prediction when inter-predicting the current block can be determined on the basis of the size of the current block. As a result, provided are a method for binarizing an inter-prediction direction of a prediction unit having a specific size, and an apparatus using same.

公开(公告)号：US20210084331A1

公开(公告)日：2021-03-18

申请号：US17103333

申请日：2020-11-24

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 ,  H04N19/426 ,  H04N19/176 ,  H04N19/11 ,  H04N19/463 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/44 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96

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：US20210067795A1

公开(公告)日：2021-03-04

申请号：US17098886

申请日：2020-11-16

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seungwook PARK ,  Byeongmoon JEON ,  Joonyoung PARK ,  Jungsun KIM ,  Sangoh JEONG ,  Chulkeun KIM

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/43 ,  H04N19/895 ,  H04N19/68 ,  H04N19/63 ,  H04N19/61 ,  H04N19/593 ,  H04N19/33 ,  H04N19/59 ,  H04N19/174 ,  H04N19/503

Abstract: The present invention relates to an inter-layer prediction method and to an apparatus implementing the method. The method may comprise the steps of generating a first block constituted by the value obtained by up-sampling the reconstruction value of a reference block of a reference layer corresponding to the current block; generating a second block constituted by a prediction value derived from intra-prediction mode of the current block; and generating a prediction block of the current block by combining sample values of the first block and the second block. Thus, intra-prediction on the current layer can be performed using the intra-prediction mode information of another layer.

公开(公告)号：US20210058635A1

公开(公告)日：2021-02-25

申请号：US17091528

申请日：2020-11-06

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Jungsun KIM ,  Chulkeun KIM ,  Byeongmoon JEON ,  Sangoh JEONG

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/31 ,  H04N19/169

Abstract: The present invention includes an image information decoding method which comprises: a step of receiving a bitstream that includes a network abstraction layer (NAL) unit including information related to an encoded image; and a step of parsing an NAL unit header of the NAL unit. The NAL unit header includes layer information including reserved_one_5bits for identifying an extended layer in an extended bitstream and temporal_id for identifying a temporal layer of a bitstream. The reserved_one_5bits of the layer information is received prior to the temporal_id of the layer information. Thus, a method for describing scalability information in a hierarchical bitstream is provided.

公开(公告)号：US20200228835A1

公开(公告)日：2020-07-16

申请号：US16835894

申请日：2020-03-31

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/117

Abstract: The present invention relates to an intra-prediction method and to an encoder and decoder using same. The intra-prediction method according to one embodiment of the present invention comprises the steps of deriving a prediction mode of a current block; and generating a prediction block with respect to the current block on the basis of the prediction mode of the current block. When the prediction mode of the current block is an intra-angular prediction mode, values of boundary samples from among left boundary samples and upper boundary samples of the prediction block, which are not positioned in a prediction direction of the intra-angular prediction mode, are derived on the basis of reference samples positioned in the prediction direction of the intra-angular prediction mode, and on the basis of adjacent reference samples.

公开(公告)号：US20200177924A1

公开(公告)日：2020-06-04

申请号：US16785114

申请日：2020-02-07

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Yongjoon JEON ,  Chulkeun KIM ,  Sangoh JEONG ,  Byeongmoon JEON ,  Jungsun KIM

IPC: H04N19/70 ,  H04N19/31 ,  H04N19/44 ,  H04N19/169 ,  H04N19/46 ,  H04N19/50 ,  H04N21/2387

Abstract: Disclosed are a method and apparatus for encoding/decoding images. The image-decoding method comprises the steps of: receiving a bit stream including information regarding an NAL unit type; and checking whether or not the NAL unit in the bit stream is a reference picture based on said information regarding an NAL unit type and decoding the NAL unit. The information regarding an NAL unit type indicates whether the NAL unit is a reference reading picture or not a reference reading picture.

公开(公告)号：US20200077108A1

公开(公告)日：2020-03-05

申请号：US16677192

申请日：2019-11-07

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seungwook PARK ,  Byeongmoon JEON ,  Joonyoung PARK ,  Jungsun KIM ,  Sangoh JEONG ,  Chulkeun KIM

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/43 ,  H04N19/895 ,  H04N19/68 ,  H04N19/63 ,  H04N19/61 ,  H04N19/593 ,  H04N19/33 ,  H04N19/59 ,  H04N19/174 ,  H04N19/503

Abstract: The present invention relates to an inter-layer prediction method and to an apparatus implementing the method. The method may comprise the steps of generating a first block constituted by the value obtained by up-sampling the reconstruction value of a reference block of a reference layer corresponding to the current block; generating a second block constituted by a prediction value derived from intra-prediction mode of the current block; and generating a prediction block of the current block by combining sample values of the first block and the second block. Thus, intra-prediction on the current layer can be performed using the intra-prediction mode information of another layer.

公开(公告)号：US20190238869A1

公开(公告)日：2019-08-01

申请号：US16381051

申请日：2019-04-11

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Joonyoung PARK ,  Chulkeun KIM ,  Byeongmoon JEON ,  Jungsun KIM

IPC: H04N19/29 ,  H04N19/44 ,  H04N19/184 ,  H04N19/174 ,  H04N19/70 ,  H04N19/86 ,  H04N19/30 ,  H04N19/46

CPC classification number: H04N19/29 ,  H04N19/174 ,  H04N19/184 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  H04N19/86

Abstract: A method for decoding an image according to the present invention comprises the steps of: receiving and parsing a parameter set including indication information which indicates the presence of withheld information to be used in the future; receiving and parsing a slide header including the withheld information, when the indication information indicates the presence of the withheld information; and decoding the image according to semantics and a value corresponding to the withheld information. As a result, provided are a method and an apparatus for describing an additional extension information indication in a bitstream supporting a hierarchical image.

公开(公告)号：US20190174142A1

公开(公告)日：2019-06-06

申请号：US16251018

申请日：2019-01-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11 ,  H04N19/91 ,  H04N19/61 ,  H04N19/85 ,  H04N19/80 ,  H04N19/182 ,  H04N19/117

Abstract: Disclosed are an intra-prediction method using filtering and an apparatus using the method. An image-decoding method comprises: a step of filtering an n upper reference pixel of a block to be predicted and neighboring pixels of the n upper reference pixel so as to obtain the filtered n upper reference pixel; and a step of filtering an n left reference pixel of a block to be predicted and neighboring pixels of the n left reference pixel so as to obtain the filtered n left reference pixel. According to the present invention, intra-prediction may be efficiently performed to improve image-encoding/decoding efficiency.