公开(公告)号：US20150146103A1

公开(公告)日：2015-05-28

申请号：US14396686

申请日：2013-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Jiwook Jung ,  Sehoon Yea ,  Jin Heo ,  Taesup Kim ,  Jaewon Sung ,  Eunyong Son

IPC: G06T7/20 ,  G06T7/40 ,  G06K9/62 ,  H04N5/232 ,  G06T7/00

CPC classification number: G06T7/2033 ,  G06K9/6201 ,  G06T7/40 ,  H04N5/23229 ,  H04N19/52 ,  H04N19/597

Abstract: A method for processing a video signal according to the present invention comprises the steps of: determining a motion vector list comprising at least one of a spatial motion vector, a temporal motion vector, and a mutation vector as a motion vector candidate of a target block; extracting motion vector identification information for specifying the motion vector candidate to be used as a predicted motion vector of the target block; setting the motion vector candidate corresponding to the motion vector identification information as the predicted motion vector of the target block; and performing motion compensation based on the predicted motion vector. The present invention forms the motion vector candidate and derives the motion vector of the target and derives the motion vector of the target block therefrom, thus enabling a more accurate prediction of the motion vector, and thereby reduces the amount of transmitted residual data and improves coding efficiency.

Abstract translation: 根据本发明的用于处理视频信号的方法包括以下步骤：确定包括空间运动矢量，时间运动矢量和突变矢量中的至少一个的运动矢量列表作为目标块的运动矢量候选 ; 提取用于指定要用作所述目标块的预测运动矢量的运动矢量候选的运动矢量识别信息; 将与运动矢量识别信息相对应的运动矢量候选设置为目标块的预测运动矢量; 并基于预测的运动矢量执行运动补偿。 本发明形成运动矢量候选，并导出目标的运动矢量，从而导出目标块的运动矢量，从而能够对运动矢量进行更精确的预测，从而减少发送的残留数据量并改进编码 效率。

公开(公告)号：US20150098509A1

公开(公告)日：2015-04-09

申请号：US14400214

申请日：2013-05-09

Applicant: LG Electronics Inc.

Inventor： Jaewon Sung ,  Sehoon Yea ,  Moonmo Koo ,  Jin Heo ,  Taesup Kim ,  Jinwook Jung ,  Eunyong Son

IPC: H04N19/52 ,  H04N19/109 ,  H04N19/593 ,  H04N19/159 ,  H04N19/176 ,  H04N19/597 ,  H04N19/119

CPC classification number: H04N19/52 ,  H04N19/109 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/463 ,  H04N19/51 ,  H04N19/593 ,  H04N19/597

Abstract: The method for processing video signals according to the present invention involves deriving an inter-view motion vector of the current texture block from one of inter-view motion vector candidates in consideration of a priority among the inter-view motion vector candidates of the current texture block, and performing inter-view inter-prediction for the current texture block using the derived inter-view motion vector. The present invention enables more accurate inter-view motion vector prediction from among various inter-view motion vector candidates, and thus a reduction in the amount of residual data being transmitted, thereby improving coding efficiency.

Abstract translation: 根据本发明的处理视频信号的方法涉及从当前纹理的视角间的运动矢量候选中考虑优先级之间的视角之间的运动矢量候选中导出当前纹理块的视角间的运动矢量 并且使用导出的视角间运动矢量对当前纹理块执行视角间预测。 本发明能够从各种视角间的运动矢量候选中进行更准确的视角内运动矢量预测，从而可以减少发送的残留数据的量，从而提高编码效率。

公开(公告)号：US20150049814A1

公开(公告)日：2015-02-19

申请号：US14383491

申请日：2013-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Jaewon Sung ,  Sehoon Yea ,  Moonmo Koo ,  Jin Heo ,  Taesup Kim ,  Jiwook Jung ,  Eunyong Son

IPC: H04N19/513 ,  H04N13/00 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N13/161 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

Abstract: The method for processing video signals according to the present invention determines a motion vector list including at least one of spatial motion vectors, temporal motion vectors, and variation vectors as motion vector candidates of a target block, extracts motion vector identifying information which specifies the motion vector candidates used as the predicted motion vectors of the target block, determines the motion vector candidates corresponding to the motion vector identifying information as the predicted motion vectors of the target block, and performs motion compensation on the basis of the predicted motion vectors. The present invention enables accurate motion vector prediction by forming motion vector candidates and induces motion vectors of a target block therefrom, and can enhance coding efficiency by reducing the amount of transmitted residual data.

Abstract translation: 根据本发明的用于处理视频信号的方法将包括空间运动矢量，时间运动矢量和变化矢量中的至少一个的运动矢量列表确定为目标块的运动矢量候选，提取指定运动的运动矢量识别信息 用作目标块的预测运动矢量的矢量候选将与运动矢量识别信息相对应的运动矢量候选确定为目标块的预测运动矢量，并基于预测运动矢量进行运动补偿。 本发明通过形成运动矢量候选来实现精确的运动矢量预测，并且从其中引起目标块的运动矢量，并且可以通过减少发送的残留数据的量来提高编码效率。

公开(公告)号：US12244860B2

公开(公告)日：2025-03-04

申请号：US18241441

申请日：2023-09-01

Applicant: LG Electronics Inc.

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

IPC: H04N19/60 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70 ,  H04N19/96

Abstract: An image decoding method according to the present document comprises a step of deriving modified transform coefficients on the basis of an inverse reduced secondary transform (RST) regarding transform coefficients regarding a target block. The inverse RST is performed on the basis of transform sets determined on the basis of a mapping relation following an intra prediction mode applied to the target block, and a transform kernel matrix selected from two transform kernel matrices included in the transform sets, respectively, and is performed on the basis of whether or not the inverse RST is applied, and a transform index indicating one of the transform kernel matrices included in the transform sets. A syntax element bin string regarding the transform index is decoded on the basis of a different context set according to the tree type regarding the division structure of the target block.

公开(公告)号：US12238339B2

公开(公告)日：2025-02-25

申请号：US17766362

申请日：2020-10-05

Applicant: LG Electronics Inc.

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

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/186

Abstract: An image decoding method, according to the present document, comprises the steps of: determining whether to parse an MTS index for applying an MTS to the current block; deriving residual samples for the current block by applying the MTS to the current block on the basis of the MTS index; and generating a reconstructed picture on the basis of the residual samples, wherein the step of determining whether to parse the MTS index includes determining the tree type of the current block, the division type of the current block, and whether zero-out for the MTS has been performed in the current block.

公开(公告)号：US12225213B2

公开(公告)日：2025-02-11

申请号：US18442607

申请日：2024-02-15

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Jaehyun Lim ,  Seunghwan Kim

IPC: H04N19/18 ,  H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/60 ,  H04N19/70 ,  H04N19/96

Abstract: An image decoding method according to the present document comprises the steps of: deriving a transform coefficient for a current block on the basis of residual information; deriving a residual sample by applying, to the transform coefficient, at least one of LFNST and MTS; and generating a reconstructed picture on the basis of the residual samples, wherein the LFNST is performed on the basis of an LFNST index indicating an LFNST kernel, the MTS is performed on the basis of an MTS index indicating an MTS kernel, and the LFNST index may be parsed before the MTS index.

公开(公告)号：US12212756B2

公开(公告)日：2025-01-28

申请号：US18360351

申请日：2023-07-27

Applicant: LG Electronics Inc.

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

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

Abstract: A method for image decoding, according to the present document, may comprise the steps of: deriving an intra prediction mode of a chroma block as a cross-component linear model (CCLM) mode; updating the intra prediction mode of the chroma block on the basis of an intra prediction mode of a luma block corresponding to the chroma block; and determining an LFNST set including LFNST matrices on the basis of the updated intra prediction mode, wherein the updated intra prediction mode is derived as an intra prediction mode corresponding to a specific position in the luma block, and the specific position is set on the basis of a color format of the chroma block.

公开(公告)号：US12206856B2

公开(公告)日：2025-01-21

申请号：US17762634

申请日：2020-09-23

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Jaehyun Lim ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60

Abstract: An image decoding method according to the present document comprises the steps of: when an ISP is applied to a current block and the width or height of a sub-partition block is less than or equal to 2, applying LFNST to the transform coefficients to derive modified transform coefficients; deriving residual samples for the objective block on the basis of an inverse primary transform for the modified transform coefficients; and generating a reconstructed picture on the basis of the residual samples for the objective block, wherein when the sub-partition block is an N×2 block or a 2×N block, (M×2) or (2×M) number of modified transform coefficients are derived by applying an LFNST matrix to a predetermined number of transform coefficients in an upper left M×2 area or 2×M (M≤N) area of the sub-partition block.

公开(公告)号：US12177484B2

公开(公告)日：2024-12-24

申请号：US17428016

申请日：2020-02-06

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/625 ,  H04N19/119 ,  H04N19/12 ,  H04N19/157 ,  H04N19/176

Abstract: A method and device for processing a video signal using a reduced transform are provided. A method for decoding a video signal includes splitting a current block into a plurality of subblocks based on a first flag for a split direction of the current block, determining a subblock, to which a transform is applied, among the plurality of subblocks based on a second flag for a position of a transform target block, determining a transform target area in the subblock, and applying an inverse transform including a horizontal transform and a vertical transform to transform coefficients of the transform target area. The transform target area is determined based on a transform type applied to the subblock and a size of the subblock.

公开(公告)号：US12137216B2

公开(公告)日：2024-11-05

申请号：US18519996

申请日：2023-11-27

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.