公开(公告)号：US20180176561A1

公开(公告)日：2018-06-21

申请号：US15736144

申请日：2016-02-02

Applicant: LG Electronics Inc.

Inventor： Chulkeun KIM ,  Junghak NAM

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/85 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82 ,  H04N19/85

Abstract: A method for filtering a reconstructed picture performed by an encoding device, according to the present invention, comprises the steps of: deriving first filter information for a target region of a reconstructed picture; selecting one among the derived first filter information and a second filter information included in the filter bank; and performing filtering on the target region in the reconstructed picture on the basis of the selected filter information, wherein, if the first filter information is selected, the filter bank is updated, and if the second filter information is selected, a filter index may be transmitted to a decoder. According to the present invention, the filtering of a reconstructed picture on the basis of the filter bank may be efficiently performed, and the amount of data allocated to the transmission/reception of filter information is reduced therethrough, consequently enabling the increase of compression and coding efficiency.

公开(公告)号：US20180167629A1

公开(公告)日：2018-06-14

申请号：US15892650

申请日：2018-02-09

Applicant: LG ELECTRONICS INC.

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

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

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

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：US20180131945A1

公开(公告)日：2018-05-10

申请号：US15864475

申请日：2018-01-08

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/159 ,  H04N19/44 ,  H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/96

Abstract: A method for decoding an image according to the present invention comprises the steps of: receiving and decoding MPM index information for indicating an MPM candidate which is to be used as an intra prediction mode of a current block; generating an MPM candidate list containing a plurality of MPM candidates for the current block; determining the MPM candidate indicated by the decoded MPM index information as the intra prediction mode of the current block, among the plurality of the MPM candidates which constitute the MPM candidate list; and generating a prediction block corresponding to the current block by performing intra prediction for the current block based on the determined intra prediction mode.

公开(公告)号：US20180131943A1

公开(公告)日：2018-05-10

申请号：US15570139

申请日：2016-04-27

Applicant: LG Electronics Inc.

Inventor： Naeri PARK ,  Seungwook PARK ,  Jaehyun LIM ,  Chulkeun KIM ,  Jungdong SEO ,  Sunmi YOO ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/139 ,  H04N19/126 ,  H04N19/122 ,  H04N19/96 ,  H04N19/109

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/126 ,  H04N19/139 ,  H04N19/513 ,  H04N19/537 ,  H04N19/86 ,  H04N19/96

Abstract: The present invention relates to method and device for decoding a bitstream for a video signal, the method comprising the steps of: obtaining a predicted value for a current block on the basis of a moving vector of the current block; and restoring the current block on the basis of the predicted value for the current block. In case a particular condition is satisfied, the step of obtaining the predicted value for the current block comprises: obtaining of a first predicted value by applying, to an area located at a particular boundary of the current block, a motion vector of a neighboring block adjacent to the area; obtaining of a second predicted value by applying a motion vector of the current block to the area; and obtaining of a weighted sum by applying a first weight to the first predicted value and by applying a second weight to the second predicted value.

公开(公告)号：US20180109808A1

公开(公告)日：2018-04-19

申请号：US15845690

申请日：2017-12-18

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

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/463 ,  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：US20170195684A1

公开(公告)日：2017-07-06

申请号：US15464611

申请日：2017-03-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/44 ,  H04N19/503

CPC classification number: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/503 ,  H04N19/91

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：US20170142440A1

公开(公告)日：2017-05-18

申请号：US15421528

申请日：2017-02-01

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 ,  H04N19/44 ,  H04N19/573

CPC classification number: H04N19/577 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/573 ,  H04N19/70

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 tents 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：US20170105016A1

公开(公告)日：2017-04-13

申请号：US15387727

申请日：2016-12-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/44 ,  H04N19/174 ,  H04N19/503

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

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：US20150334399A1

公开(公告)日：2015-11-19

申请号：US14649825

申请日：2013-12-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/503 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/463 ,  H04N19/503 ,  H04N19/573 ,  H04N19/577

Abstract: The present invention relates to a method for coding a scalable video in a multilayer structure, and a method for encoding a video according to the present invention comprises the steps of: decoding and saving a picture of a reference layer; inducing an interlayer reference picture which is referenced for predicting a current block of a current layer; producing a reference picture list including the interlayer reference picture and a reference picture of the current layer; conducting a prediction on the current block of the current layer with the reference picture list to induce a prediction sample with respect to the current block; inducing a recovery sample with respect to the current block based on the prediction sample and the prediction block with respect to the current block; and transmitting reference information for indicating a picture that can be used for interlayer prediction from the pictures of the reference layer.

Abstract translation: 本发明涉及一种用于编码多层结构中的可分级视频的方法，以及根据本发明的视频编码方法，包括以下步骤：解码并保存参考层的图片; 诱发用于预测当前层的当前块的参考图片; 产生包括当前层的层间参考图像和参考图像的参考图像列表; 利用参考图片列表对当前层的当前块进行预测，以针对当前块诱发预测样本; 基于相对于当前块的预测样本和预测块，相对于当前块诱发恢复样本; 以及从参考层的图像发送用于指示可用于层间预测的图像的参考信息。

公开(公告)号：US20150312571A1

公开(公告)日：2015-10-29

申请号：US14647971

申请日：2013-11-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/129 ,  H04N19/91 ,  H04N19/593 ,  H04N19/124 ,  H04N19/51 ,  H04N19/645 ,  H04N19/187

CPC classification number: H04N19/129 ,  H04N19/124 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/51 ,  H04N19/59 ,  H04N19/593 ,  H04N19/645 ,  H04N19/91

Abstract: A method and device for encoding/decoding an image supporting a plurality of layers are disclosed. The method for decoding the image includes the step of receiving a bitstream including information on a decoding target block of the current layer, the step of entropy decoding the bitstream and obtaining a 1D array of transformation coefficients of the decoding target block; the step of scanning the 1D array of the transformation coefficients according to a scan order and re-arranging it as a 2D array of the transformation coefficients, the step of inversely quantizing the 2D array of the transformation coefficients and obtaining a 2D array of transformation coefficients inversely quantized for the decoding target block, and the step of predicting the decoding target block based on a prediction mode for the decoding target block.

Abstract translation: 公开了一种用于对支持多个层的图像进行编码/解码的方法和装置。 用于对图像进行解码的方法包括：接收包括关于当前层的解码目标块的信息的比特流的步骤，对比特流进行熵解码的步骤，并获得解码目标块的变换系数的1D阵列; 根据扫描顺序扫描变换系数的1D阵列并将其重新排列为变换系数的2D阵列的步骤，对变换系数的2D阵列进行逆量化并获得变换系数的2D阵列的步骤 对于解码对象块进行逆量化，以及基于解码对象块的预测模式来预测解码对象块的步骤。