公开(公告)号：US20200336747A1

公开(公告)日：2020-10-22

申请号：US16757631

申请日：2018-03-19

Applicant: LG Electronics Inc.

Inventor： Jungdong SEO

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/61 ,  H04N19/172

Abstract: Disclosed are an inter prediction mode-based image processing method and a device therefor. Specifically, the inter prediction mode-based image processing method may comprise the steps of: extracting, from a bitstream received from an encoder, motion information used in the inter prediction of a current block; by using the motion information, determining an initial reference block of the current block; on the basis of the initial reference block, determining at least one additional reference block in a previously reconstructed region; and by using the initial reference block and the at least one additional reference block, generating a prediction block of the current block.

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：US20240422344A1

公开(公告)日：2024-12-19

申请号：US18818416

申请日：2024-08-28

Applicant: LG Electronics Inc.

Inventor： Jungdong SEO ,  Jaehyun Lim

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/109 ,  H04N19/119 ,  H04N19/13 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/44 ,  H04N19/91

Abstract: An image decoding method performed by a decoding device according to the present invention comprises the steps of: acquiring information on inter prediction of a target block through a bit stream; deriving motion information of the target block on the basis of the information on inter prediction; deriving a prediction sample by performing inter prediction for the target block on the basis of the motion information; generating a reconstruction block on the basis of the prediction sample; deriving modified motion information of the target block on the basis of the reconstruction block; and updating the motion information of the target block on the basis of the modified motion information. According to the present invention, modified motion information of the target block can be calculated, and the motion information of the target block can be updated on the basis of the modified motion information, so that the overall coding efficiency can be improved.

公开(公告)号：US20210037238A1

公开(公告)日：2021-02-04

申请号：US16766982

申请日：2018-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Naeri PARK ,  Junghak NAM ,  Jungdong SEO ,  Jaeho LEE ,  Hyeongmoon JANG

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/182

Abstract: An image decoding method that is performed by a decoding apparatus according to the present disclosure comprises the steps of: forming a merge candidate list based on neighbouring blocks of a current block; deriving costs with respect to merge candidates included in the merge candidate list; deriving a revised merge candidate list based on the costs with respect to the merge candidates; deriving movement information of the current block based on the revised merge candidate list; and performing prediction on the current block based on the movement information, wherein the neighbouring blocks include spatial neighbouring blocks and temporal neighbouring blocks.

公开(公告)号：US20170310993A1

公开(公告)日：2017-10-26

申请号：US15517712

申请日：2015-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Sehoon YEA ,  Jungdong SEO ,  Sunmi YOO

IPC: H04N19/597 ,  H04N19/513 ,  H04N19/44

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N2013/0081

Abstract: The present invention relates to 3D video coding device and method. A decoding method according to the present invention provides a 3D video decoding method. A decoding method comprises the steps of: deriving a disparity vector with respect to a current block; deriving the location of a corresponding sample on a reference view on the basis of the disparity vector; deriving the location of a reference sample on the basis of the location of the corresponding sample; and deriving movement information of a prediction block that covers the location of the reference sample. According to the present invention, when a corresponding block in a reference view is derived by means of a disparity vector, movement information of the corresponding block can be derived in accordance with movement information compression, a buffer load of an encoder and a decoder can be reduced, and coding efficiency can be enhanced by having the amount of information being processed reduced.

公开(公告)号：US20160255369A1

公开(公告)日：2016-09-01

申请号：US15028649

申请日：2014-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Junghak NAM ,  Jungdong SEO ,  Sunmi YOO ,  Sehoon YEA ,  Jin HEO ,  Taesup KIM ,  Moonmo KOO

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52

CPC classification number: H04N19/597 ,  H04N19/176 ,  H04N19/182 ,  H04N19/52

Abstract: The present invention relates to a video decoding apparatus and method for decoding a multi-view video, and the method for decoding a video, according to the present invention, is the video decoding method for decoding a multi-view video, comprising the steps of: inducing video information required for decoding a current block by entropy-decoding a bitstream; inducing a first disparity vector based on a neighboring block of the current block in the same view by using the video information, inducing a second disparity vector by using the first disparity vector and a reference view depth, and inducing a third disparity vector using the difference between the first disparity vector and the second disparity vector; inducing a prediction sample of the current block by using one of the first disparity vector, the second disparity vector, or the third disparity vector; and applying filtering to a current picture which has been restored using the prediction sample.

Abstract translation: 本发明涉及用于解码多视点视频的视频解码装置和方法，以及根据本发明的解码视频的方法，是用于对多视点视频进行解码的视频解码方法，包括以下步骤： ：通过对比特流进行熵解码来诱导解码当前块所需的视频信息; 通过使用视频信息在同一视图中基于当前块的相邻块来诱导第一视差向量，通过使用第一视差向量和参考视图深度来诱导第二视差向量，并且使用差异来诱导第三视差矢量 在第一视差矢量和第二视差矢量之间; 通过使用第一视差矢量，第二视差矢量或第三视差矢量中的一个来诱导当前块的预测采样; 并对使用预测样本恢复的当前图像应用滤波。

公开(公告)号：US20200351505A1

公开(公告)日：2020-11-05

申请号：US16097100

申请日：2016-07-05

Applicant: LG Electronics Inc.

Inventor： Jungdong SEO

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/137 ,  H04N19/30 ,  H04N19/132 ,  H04N19/176

Abstract: The present invention discloses an inter prediction mode-based image processing method and an apparatus therefor. Specifically, a method for processing an image based on an inter prediction includes: deriving reverse motion information of a current block by using motion information of a block within a reference picture of a current picture; adding the reverse motion information to a motion information candidate list of the current block; deriving motion information of the current block from the motion information selected among motion information candidates added to the motion information candidate list; and generating a prediction block of the current block by using the motion information of the current block, in which the block within the reference picture may be specified by the reverse motion information.

公开(公告)号：US20190058881A1

公开(公告)日：2019-02-21

申请号：US15767267

申请日：2016-09-22

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong SEO ,  Jaehyun LIM ,  Naeri PARK

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/44 ,  H04N19/70

Abstract: Disclosed are a method for processing an image and an apparatus therefor. Specifically, a method for decoding an image comprises: a step of deriving an initial block size information indicating information in which a first block, which is a basic unit for dividing an image, is divided into one or more initial blocks; a step of deriving a division information indicating information in which the initial block is divided into a plurality of second blocks in the initial block unit divided from the first block based on the initial block size information; and a step of decoding in a second block unit recursively divided from the initial block based on the division information.

公开(公告)号：US20180359468A1

公开(公告)日：2018-12-13

申请号：US15765167

申请日：2016-09-20

Applicant: LG ELECTRONICS INC.

Inventor： Jungdong SEO ,  Jaehyun LIM ,  Naeri PARK

IPC: H04N19/105 ,  H04N19/593 ,  H04N19/59

CPC classification number: H04N19/109 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/34 ,  H04N19/44 ,  H04N19/96

Abstract: Disclosed are an image processing method on the basis of an inter prediction mode and an apparatus therefor. Specifically, a method for processing an image on the basis of inter prediction may comprise the steps of reducing the bit depth of a reconstructed picture and storing the same in a reference picture buffer; re-scaling the bit depth of a reference picture of a current block in the reconstructed picture stored in the reference picture buffer; and generating a prediction block for the current block on the basis of the reference picture, the bit depth of which has been re-scaled.

公开(公告)号：US20180309987A1

公开(公告)日：2018-10-25

申请号：US15768403

申请日：2016-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Kyuwoon KIM ,  Jaehyun LIM ,  Naeri PARK ,  Jungdong SEO

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/105 ,  H04N19/513

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/176 ,  H04N19/503 ,  H04N19/513 ,  H04N19/82

Abstract: An inter prediction method according to the present invention, which is performed by a decoding apparatus, comprises the steps of: acquiring prediction-related information and residual information from a received bitstream; performing inter prediction on a current block on the basis of the prediction-related information so as to generate prediction samples; generating a list of Wiener filter candidates on the basis of spatially neighboring blocks of the current block, and deriving Wiener filter coefficients for the current block on the basis of candidate blocks in the list of the Wiener filter candidates; filtering the prediction samples on the basis of the derived Wiener filter coefficients; deriving residual samples for the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the filtered prediction samples and the residual samples. The present invention can reduce the amount of data for a residual signal and improve coding efficiency.