公开(公告)号：US09407930B2

公开(公告)日：2016-08-02

申请号：US14690660

申请日：2015-04-20

Applicant: LG ELECTRONICS INC.

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

IPC: H04N7/32 ,  H04N19/56 ,  H04N19/50 ,  H04N19/573 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/50 ,  H04N19/513 ,  H04N19/56 ,  H04N19/573 ,  H04N19/577

Abstract: The present invention relates to a method and apparatus for encoding or decoding a video signal. According to the present invention, a plurality of reference units for image prediction of the current unit is acquired and combined to obtain a unit prediction value, thereby improving the accuracy of image prediction. More particularly, the present invention relates to a method for inducing a variety of reference units using a motion vector prediction value or a motion vector which is used in conventional inter-prediction, and also relates to a method which combines the reference units so as to obtain the prediction value for the current unit. In addition, the present invention relates to a method which involves acquiring a plurality of reference units for a merging mode, and combining the reference units so as to perform image prediction.

公开(公告)号：US09319683B2

公开(公告)日：2016-04-19

申请号：US14256059

申请日：2014-04-18

Applicant: LG Electronics Inc.

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

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/593 ,  H04N19/176 ,  H04N19/61 ,  H04N19/11 ,  H04N19/463 ,  H04N19/426

CPC classification number: H04N19/593 ,  H04N7/26244 ,  H04N7/50 ,  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.

Abstract translation: 用于帧内预测的方法包括：基于与当前块的左侧相邻的左侧候选块的位置来确定与左侧候选块相对应的第一MPM候选; 基于与当前块的上端相邻的上位候选块的位置，确定与上位候选块对应的第二MPM候选; 基于所述第一MPM候选和所述第二MPM候选，生成包括多个MPM候选的MPM候选列表; 以及将构成MPM候选列表的多个MPM候选的一个MPM候选确定为当前块的帧内预测模式，并且基于所确定的帧内预测模式对当前块执行帧内预测，​​以生成预测块 对应于当前块。

公开(公告)号：US09294769B2

公开(公告)日：2016-03-22

申请号：US14230656

申请日：2014-03-31

Applicant: LG Electronics Inc.

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

IPC: H04N19/50 ,  H04N19/61 ,  H04N19/11 ,  H04N19/593 ,  H04N19/91 ,  H04N19/182 ,  H04N19/80 ,  H04N19/85 ,  H04N7/26 ,  H04N19/12 ,  H04N19/46

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/80 ,  H04N19/85 ,  H04N19/91

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.

公开(公告)号：US09020032B2

公开(公告)日：2015-04-28

申请号：US13772144

申请日：2013-02-20

Applicant: LG Electronics Inc.

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

IPC: H04N7/32 ,  H04N19/50 ,  H04N19/573

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/50 ,  H04N19/513 ,  H04N19/56 ,  H04N19/573 ,  H04N19/577

Abstract: The present invention relates to a method and apparatus for encoding or decoding a video signal. According to the present invention, a plurality of reference units for image prediction of the current unit is acquired and combined to obtain a unit prediction value, thereby improving the accuracy of image prediction. More particularly, the present invention relates to a method for inducing a variety of reference units using a motion vector prediction value or a motion vector which is used in conventional inter-prediction, and also relates to a method which combines the reference units so as to obtain the prediction value for the current unit. In addition, the present invention relates to a method which involves acquiring a plurality of reference units for a merging mode, and combining the reference units so as to perform image prediction.

Abstract translation: 本发明涉及用于对视频信号进行编码或解码的方法和装置。 根据本发明，获取并组合多个用于当前单位的图像预测的参考单元以获得单位预测值，从而提高图像预测的准确度。 更具体地，本发明涉及一种使用运动矢量预测值或在常规帧间预测中使用的运动矢量来诱导各种参考单元的方法，并且还涉及一种组合参考单元以便 获取当前单位的预测值。 此外，本发明涉及一种涉及获取用于合并模式的多个参考单元并组合参考单元以执行图像预测的方法。

公开(公告)号：US20150098511A1

公开(公告)日：2015-04-09

申请号：US14564825

申请日：2014-12-09

Applicant: LG Electronics Inc.

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

IPC: H04N19/55 ,  H04N19/176

CPC classification number: H04N19/55 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625

Abstract: The present invention relates to a method and apparatus for processing a video signal, which can increase the accuracy of the motion vector prediction through motion vector scaling which takes a difference in the temporal distance between reference pictures into consideration. To this end, the present invention provides a video signal processing method and a video signal processing apparatus using the same, and the method comprises the steps of: scaling at least one neighboring partition motion vector for a motion vector prediction of the current partition; scaling the neighboring partition motion vector, which has been selected, when the reference picture of the neighboring partition motion vector is different from the reference picture of the current partition; acquiring a motion vector prediction value of the current partition using the scaled motion vector; and acquiring a motion vector of the current partition using the motion vector prediction value.

Abstract translation: 本发明涉及一种用于处理视频信号的方法和装置，其可以通过考虑到参考图像之间的时间距离的差异的运动矢量缩放来增加运动矢量预测的精度。 为此，本发明提供了一种视频信号处理方法和使用该视频信号处理方法的视频信号处理装置，该方法包括以下步骤：缩放当前分区的运动矢量预测的至少一个相邻分区运动矢量; 当相邻分区运动矢量的参考图片与当前分区的参考图片不同时，缩放已经选择的相邻分区运动矢量; 使用所述缩放的运动矢量获取所述当前分区的运动矢量预测值; 以及使用运动矢量预测值来获取当前分区的运动矢量。

公开(公告)号：US20140376643A1

公开(公告)日：2014-12-25

申请号：US14369063

申请日：2012-12-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/13 ,  H04N19/436

CPC classification number: H04N19/13 ,  H04N19/124 ,  H04N19/436 ,  H04N19/91 ,  H04N21/6336

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.

Abstract translation: 本发明涉及视频编码和解码方法和装置，根据本发明的视频编码方法包括以下步骤：熵编码量化变换信息; 以及将所述熵编码信息作为比特流发送，其中所述比特流包括指示要以字节为单位并行解码的信息的信息。

公开(公告)号：US12262015B2

公开(公告)日：2025-03-25

申请号：US17762150

申请日：2020-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Jaehyun Lim ,  Seunghwan Kim

IPC: H04N19/18 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176

Abstract: An image decoding method includes a step of deriving a residual sample, wherein the step of deriving the residual sample includes the steps of: when a current block is divided into sub-partition blocks, deriving a transform kernel for an inverse primary transform applied to a sub-partition block based on a horizontal or a vertical length of the sub-partition block; and deriving the residual sample from transform coefficients based on the transform kernel.

公开(公告)号：US12244812B2

公开(公告)日：2025-03-04

申请号：US17910493

申请日：2021-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Hyeongmoon Jang ,  Jaehyun Lim ,  Seunghwan Kim ,  Mehdi Salehifar

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/96

Abstract: An image decoding method according to the present document may comprise a step for deriving modified transform coefficients, wherein the step for deriving modified transform coefficients may comprise the steps of: determining whether the tree type of the current block is a single tree; parsing an LFNST index when the tree type is the single type, the LFNST index being parsed on the basis of a transform coefficient coding flag value for a luma component of the current block, or on the basis of whether an ISP mode is applicable to the luma component; and deriving the modified transform coefficients by applying an LFNST kernel derived on the basis of the LFNST index.

公开(公告)号：US20250024030A1

公开(公告)日：2025-01-16

申请号：US18899842

申请日：2024-09-27

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo KOO ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/61

Abstract: Embodiments of the present invention provide a method and apparatus for processing a video signal. A method for decoding an image signal according to an embodiment of the present invention comprises the steps of: for a current block having a width and a height different from each other, determining a modified intra prediction mode from an intra prediction mode, on the basis of a ratio between the width and the height of the current block and the intra prediction mode; determining an inverse non-separable transform set on the basis of the modified intra prediction mode; and applying an inverse non-separable transform matrix selected from the inverse non-separable transform set with respect to the top-left region of the current block, which is determined according to the width and the height of the current block.

公开(公告)号：US12200229B2

公开(公告)日：2025-01-14

申请号：US17776110

申请日：2020-11-13

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/186 ,  H04N19/12 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

Abstract: An image decoding method according to the present document comprises the step of deriving modified transform coefficients, wherein the step of deriving the modified transform coefficients comprises the step of parsing an LFNST index on the basis of a variable indicating whether an ISP is applied to a current block or whether an effective coefficient is present in a DC component of the current block, according to the tree type of the current block, wherein the variable may be derived on the basis of an individual transform skip flag value for a color component of the current block.