公开(公告)号：US20220417561A1

公开(公告)日：2022-12-29

申请号：US17780294

申请日：2020-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/172 ,  H04N19/107 ,  H04N19/593 ,  H04N19/503 ,  H04N19/136 ,  H04N19/119

Abstract: A video decoding method performed by a video decoding apparatus according to the present document comprises: parsing number information about the number of slices for which height is explicitly signaled in a tile of a current picture from a bitstream; parsing height information about the height of the slices for which height is explicitly signaled from the bitstream based on the number information; and decoding the current picture based on the number information and the height information.

公开(公告)号：US11503343B2

公开(公告)日：2022-11-15

申请号：US17570854

申请日：2022-01-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/70 ,  H04N19/18 ,  H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  H04N19/132 ,  H04N19/174 ,  H04N19/172

Abstract: According to the disclosure of the present document, scaling list data delivered in an adaptation parameter set (APS) may be signaled through a hierarchical structure, and the amount of data that needs to be signaled for video/image coding may be reduced and implementation may be facilitated by placing limits on the scaling list data delivered in the APS.

公开(公告)号：US11483567B2

公开(公告)日：2022-10-25

申请号：US17278478

申请日：2019-09-23

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Mehdi Salehifar ,  Seunghwan Kim

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A method for processing video signals on the basis of inter prediction includes the steps of: deriving a motion vector predictor by using motion information of a neighboring block of the current block; parsing layer information for indicating the current layer, to which a motion vector difference used for the inter prediction of the current block belongs, within a predefined layer structure in which a combination of motion vector differences between one or more horizontal and vertical components is classified into a plurality of layers; parsing index information for indicating a specific combination in the current layer; deriving a motion vector difference of the current block by using the layer information and the index information; and deriving a motion vector of the current block by adding the motion vector difference to the motion vector predictor.

公开(公告)号：US20220329873A1

公开(公告)日：2022-10-13

申请号：US17838062

申请日：2022-06-10

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/82 ,  H04N19/156 ,  H04N19/18

Abstract: According to embodiments of the present document, the subjective/objective quality of an image can be improved through image coding on the basis of subpictures and/or virtual boundaries, and consumption of hardware resources required for coding can be reduced.

公开(公告)号：US20220182620A1

公开(公告)日：2022-06-09

申请号：US17600012

申请日：2020-03-19

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Jaehyun Lim ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/184

Abstract: According to the disclosure of the present document, ALF parameters and/or LMCS parameters may be hierarchically signaled, thereby enabling a reduction in data volume to be signaled for video/image coding and an increase in coding efficiency.

公开(公告)号：US11297330B2

公开(公告)日：2022-04-05

申请号：US16578974

申请日：2019-09-23

Applicant: LG ELECTRONICS INC.

Inventor： Jane Zhao ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/176 ,  H04N19/52 ,  H04N19/105 ,  H04N19/159 ,  H04N19/137

Abstract: A method of processing a video signal based on inter prediction includes constructing a first merge candidate list of a current block using a spatial merge candidate and temporal merge candidate of the current block, constructing a second merge candidate list by adding a history-based merge candidate indicating motion information of a block coded prior to the current block to the first merge candidate list, obtaining a merge index indicating a merge candidate applied to the current block within the second merge candidate list, and generating a prediction block of the current block using motion information of a merge candidate indicated by the merge index. The history-based merge candidate may be added to the first merge candidate list if the history-based merge candidate has motion information not overlapping motion information of a pre-defined merge candidate among merge candidates included in the first merge candidate list.

公开(公告)号：US11297327B2

公开(公告)日：2022-04-05

申请号：US17060792

申请日：2020-10-01

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/52 ,  H04N19/91

Abstract: A picture decoding method performed by a decoding apparatus according to the present disclosure includes obtaining motion prediction information from bitstream, generating an affine MVP candidate list including affine MVP candidates for a current block, deriving CPMVPs for respective CPs of the current block based on one of the affine MVP candidates included in the affine MVP candidate list, deriving the CPMVDs for the CPs of the current block based on information on CPMVDs for each of the CPs included in the obtained motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, deriving prediction samples for the current block based on the CPMVs, and generating reconstructed samples for the current block based on the derived prediction samples.