公开(公告)号：US20150350679A1

公开(公告)日：2015-12-03

申请号：US14759611

申请日：2014-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Jiwook JUNG ,  Sehoon YEA ,  Moonmo KOO ,  Taesup KIM ,  Jaewon SUNG ,  Eunyong SON

IPC: H04N19/597 ,  H04N19/61 ,  H04N19/59 ,  H04N13/00

CPC classification number: H04N19/597 ,  H04N13/10 ,  H04N19/463 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70

Abstract: The present invention relates to a method and an apparatus for processing video signals, and more specifically, to a method and an apparatus for processing video signals which applies deformation compensation to decode a current texture block. The present invention can increase the accuracy of an inter-prediction by obtaining the position of a block within a reference picture referenced by the current texture block, by means of using deformation compensation parameter information, and obtaining a pixel value of the block within the reference picture that is obtained from a prediction value of the current texture block.

Abstract translation: 技术领域本发明涉及一种用于处理视频信号的方法和装置，更具体地，涉及一种用于处理视频信号的方法和装置，该方法和装置应用变形补偿来解码当前纹理块。 本发明可以通过使用变形补偿参数信息，通过使用变形补偿参数信息获得块内的像素值，从而获得当前纹理块所参考的参考图像内的块的位置，从而提高帧间预测的精度 从当前纹理块的预测值获得的图像。

公开(公告)号：US20150350657A1

公开(公告)日：2015-12-03

申请号：US14759580

申请日：2014-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Jiwook JUNG ,  Sehoon YEA ,  Moonmo KOO ,  Taesup KIM ,  Jaewon SUNG ,  Eunyong SON

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/463 ,  H04N19/593 ,  H04N19/11 ,  H04N19/196

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/197 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61

Abstract: The video signal processing method according to the present invention comprises: generating a candidate mode list of a current block on the basis of an intra-prediction mode from the spatial neighboring block of the current block; modifying the candidate mode list on the basis of an intra-prediction mode from the neighboring view of the current block; inducing the intra-prediction mode of the current block on the basis of the modified candidate mode list; and predicting the current block by using the induced intra-prediction mode.

Abstract translation: 根据本发明的视频信号处理方法包括：根据来自当前块的空间相邻块的帧内预测模式生成当前块的候选模式列表; 基于来自当前块的相邻视图的帧内预测模式修改候选模式列表; 基于修改的候选模式列表来诱导当前块的帧内预测模式; 并通过使用感应的帧内预测模式来预测当前块。

公开(公告)号：US20250159263A1

公开(公告)日：2025-05-15

申请号：US19022025

申请日：2025-01-15

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 ,  H04N19/186 ,  H04N19/61

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：US20250142126A1

公开(公告)日：2025-05-01

申请号：US18941358

申请日：2024-11-08

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：US20250063186A1

公开(公告)日：2025-02-20

申请号：US18819109

申请日：2024-08-29

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan KIM ,  Mehdi SALEHIFAR ,  Moonmo KOO ,  Jaehyun LIM

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/625

Abstract: Provided is a method for decoding a video signal based on a reduced transform, which includes: checking whether a transform skip is applied to a current block; obtaining a transform index indicating a transform kernel of the current block from the video signal when the transform skip is not applied to the current block; determining a region where a primary transform is applied to the current block based on the transform kernel indicated by the transform index and a size of the current block; and performing an inverse primary transform on the region to which the primary transform is applied by using the transform kernel indicated by the transform index.

公开(公告)号：US20250039391A1

公开(公告)日：2025-01-30

申请号：US18918879

申请日：2024-10-17

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Hyeongmoon JANG ,  Seunghwan KIM ,  Jaehyun LIM

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

Abstract: An image decoding method according to the present document comprises the steps of: on the basis of an intra prediction mode of a chroma block being a cross-component linear model (CCLM) mode and an intra prediction mode of a luma block corresponding to the chroma block being a palette mode, updating the intra prediction mode of the chroma block to an intra DC mode; on the basis of the updated intra prediction mode, determining an LFNST set including LFNST matrices; and performing LFNST on the chroma block on the basis of an LFNST matrix derived from the LFNST set, wherein the intra DC mode is an intra prediction mode corresponding to a specific location within the luma block.

公开(公告)号：US20250039381A1

公开(公告)日：2025-01-30

申请号：US18913471

申请日：2024-10-11

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Seunghwan KIM ,  Jaehyun LIM

IPC: H04N19/122 ,  H04N19/159 ,  H04N19/18 ,  H04N19/61

Abstract: An image decoding method according to the present disclosure comprises the steps of: deriving residual samples with respect to a target block on the basis of an inverse primary transform with respect to modified transform coefficients; and on the basis of the residual samples, generating a reconstructed picture, wherein a step of deriving the modified transform coefficients may include the steps of: parsing an LFNST index on the basis of the tree-type of a current block not being a dual-tree chroma and a MIP mode not being applicable to the current block; and deriving the modified transform coefficients on the basis of the LFNST index and an LFNST matrix.

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：US20240414376A1

公开(公告)日：2024-12-12

申请号：US18812345

申请日：2024-08-22

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Hyeongmoon JANG ,  Seunghwan KIM ,  Jaehyun LIM

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186

Abstract: An image decoding method according to the present document comprises the steps of: updating an intra-prediction mode of a chroma block on the basis of an intra-prediction mode of a luma block corresponding to the chroma block on the basis of the intra-prediction mode of the chroma block being a cross-component linear model (CCLM) mode; and determining a LFNST set including LFNST matrixes 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 updated intra-prediction mode is updated as an intra-DC mode on the basis of the intra-prediction mode, that corresponds to the specific position, being an intra-block copy (IBC) mode.

公开(公告)号：US20240406393A1

公开(公告)日：2024-12-05

申请号：US18805322

申请日：2024-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo KOO ,  Seunghwan KIM ,  Jaehyun LIM

IPC: H04N19/12 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: An image decoding method according to the present document comprises the step of deriving modified transform coefficients by applying LFNST to transform coefficients, wherein the step of deriving the modified transform coefficients comprises the steps of: deriving a variable indicating whether an effective coefficient is present in a DC component of a current block; and parsing an LFNST index on the basis of whether the variable indicates that the effective coefficient is present in a position other than the DC component, wherein the variable may be derived on the basis of an individual transform skip flag value for a color component of the current block.