公开(公告)号：US20200382789A1

公开(公告)日：2020-12-03

申请号：US16998951

申请日：2020-08-20

Applicant: LG Electronics Inc.

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

IPC: H04N19/136 ,  H04N19/50 ,  H04N19/96 ,  H04N19/91 ,  H04N19/44 ,  H04N19/174

Abstract: The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context.

公开(公告)号：US20200280738A1

公开(公告)日：2020-09-03

申请号：US16875199

申请日：2020-05-15

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 ,  H04N19/174 ,  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 pluraity 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：US20200280724A1

公开(公告)日：2020-09-03

申请号：US16814808

申请日：2020-03-10

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

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：US20200053389A1

公开(公告)日：2020-02-13

申请号：US16594660

申请日：2019-10-07

Applicant: LG Electronics Inc.

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

IPC: H04N19/593

Abstract: An image decoding method according to the present invention comprises the steps o£ acquiring information to form a reference picture set of a current picture by entropy decoding the received bitstream information; and performing prediction on a prediction block inside the current picture by using a reference picture list which is formed based on the reference picture set.

公开(公告)号：US20200045327A1

公开(公告)日：2020-02-06

申请号：US16597153

申请日：2019-10-09

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：US20190268620A1

公开(公告)日：2019-08-29

申请号：US16406810

申请日：2019-05-08

Applicant: LG Electronics Inc.

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

IPC: H04N19/577 ,  H04N19/46 ,  H04N19/503 ,  H04N19/44 ,  H04N19/423 ,  H04N19/70 ,  H04N19/573

Abstract: The present invention relates to a method for signaling image information and to a decoding method using same. The method for signaling image information according to the present invention comprises: a step of performing inter-prediction for a current picture; and a step of signaling information including the result of said inter-prediction and reference picture information indicating reference pictures usable in said inter prediction, wherein said reference picture information contains pieces of picture order count (POC) information of said usable reference pictures. The POC information of said usable reference pictures in said reference picture information is configured such that POCs for the pictures existing before said current picture in terms of a POC sequence are located at the front, and POCs for the pictures existing after said current picture in terms of a POC sequence are located following the POCs located at the front.

公开(公告)号：US20180352261A1

公开(公告)日：2018-12-06

申请号：US16056087

申请日：2018-08-06

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04N19/70 ,  H04N19/188 ,  H04N19/31 ,  H04N19/44 ,  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：US20180316922A1

公开(公告)日：2018-11-01

申请号：US15773374

申请日：2016-11-04

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Chulkeun KIM

IPC: H04N19/14 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/14 ,  H04N19/103 ,  H04N19/117 ,  H04N19/176 ,  H04N19/44 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: An image decoding method performed by a decoding apparatus, according to the present invention, comprises the steps of: acquiring information on a first SAO and information on a second SAO of a current block through a bit stream; generating a reconstructed block of the current block; and performing an SAO procedure for the reconstructed block on the basis of the first SAO and the second SAO, wherein the information on the first SAO comprises first offset type information applied to the first SAO and first offset value information for n offset values, and the information on the second SAO comprises second offset type information applied to the second SAO and second offset value information for m offset values. According to the present invention, an efficient SAO procedure can be performed on the basis of a plurality of SAOs, and the video quality of images can be further improved.

公开(公告)号：US20180295363A1

公开(公告)日：2018-10-11

申请号：US15766278

申请日：2016-10-13

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Chulkeun KIM ,  Sehoon YEA

IPC: H04N19/117 ,  H04N19/174 ,  H04N19/44 ,  H04N19/46 ,  H04N19/625 ,  H04N19/85 ,  H04N19/139 ,  H04N19/80

Abstract: An image decoding method performed by a decoding apparatus according to the present invention comprises the steps of: generating a reconstruction area for a target area within a current picture; deriving a predetermined plurality of basic filters for the target area; updating at least one basic filter among the plurality of basic filters; receiving weight information for each of the basic filters; determining a merge filter for the target area on the basis of the basic filters and the weight information; and generating a modified reconstruction area by performing filtering on the target area on the basis of the filter coefficient of the determined merge filter. The present invention allows updating with filter information suitable for improving the visual quality of the target area and can thereby improve the accuracy of filtering and overall coding efficiency.

公开(公告)号：US20180176602A1

公开(公告)日：2018-06-21

申请号：US15737157

申请日：2016-06-13

Applicant: LG Electronics Inc.

Inventor： Junghak NAM ,  Chulkeun KIM

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/107 ,  H04N19/91

CPC classification number: H04N19/82 ,  H04N19/107 ,  H04N19/117 ,  H04N19/124 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: Disclosed in the present invention are a method for encoding/decoding an image and a device for same. Particularly, a method for decoding an image may comprise the steps of: parsing the weight value (w) of a loop filter from a bitstream outputted from an encoder; applying the loop filter to an image obtained by using a prediction signal and a differential signal; and generating a recovered image and a reference image by performing the weighted sum of the recovered image before the loop filter is applied and the recovered image after the loop filter is applied, based on the w.