公开(公告)号：US20220217404A1

公开(公告)日：2022-07-07

申请号：US17600314

申请日：2020-04-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/18 ,  H04N19/176 ,  H04N19/132

Abstract: According to the disclosure of the present document, scaling list data and scaling list-associated information can be signaled hierarchically, which can consequently reduce the amount of data to be signaled for video/image coding and increase coding efficiency.

公开(公告)号：US20220210403A1

公开(公告)日：2022-06-30

申请号：US17598151

申请日：2020-04-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/126 ,  H04N19/132 ,  H04N19/139 ,  H04N19/17 ,  H04N19/30 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data and scaling list-related information 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：US20220182681A1

公开(公告)日：2022-06-09

申请号：US17442358

申请日：2020-03-24

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Jongyeul SUH ,  Jaehyun LIM ,  Seunghwan KIM

IPC: H04N19/82 ,  H04N19/176 ,  H04N19/105 ,  H04N19/70

Abstract: According to the disclosure of the present document, an image/video coding procedure may be performed on the basis of a sub-picture partitioning structure, and encoded image/video information may include individual information on each of subpictures. In addition, output sub-picture sets, each including sub-pictures, may be used for encoding or decoding of an image/video, whereby the overall image/video compression efficiency can be improved and the subjective/objective visual quality can be improved.

公开(公告)号：US20220159266A1

公开(公告)日：2022-05-19

申请号：US17592771

申请日：2022-02-04

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.

公开(公告)号：US20220132115A1

公开(公告)日：2022-04-28

申请号：US17570284

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/132 ,  H04N19/13 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

Abstract: An image decoding method, according to the present disclosure, enables: acquiring, from a bitstream, image information including prediction mode information and adaptive loop filter (ALF) information including alternative filter information for a chroma component of a current block; deriving prediction samples for the current block on the basis of the prediction mode information; generating reconstructed samples on the basis of the prediction samples; and generating modified reconstructed samples for the chroma component of the current block on the basis of the alternative filter information.

公开(公告)号：US20220132114A1

公开(公告)日：2022-04-28

申请号：US17570247

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/91 ,  H04N19/159

Abstract: According to the disclosure of the present disclosure, the index of an alternative filter is derived from ALF information, and an ALF procedure for a chroma component of a current block can be performed on the basis of the alternative filter

公开(公告)号：US20220132113A1

公开(公告)日：2022-04-28

申请号：US17570237

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan Kim

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/176 ,  H04N19/186 ,  H04N19/132 ,  H04N19/46

Abstract: An image decoding method, according to the present disclosure may comprise: acquiring, from a bitstream, image information including adaptive loop filter (ALF) information including, alternative filter information for a chroma component of a current block, and residual information; generating reconstructed samples for the current block on the basis of the residual information; and generating modified reconstructed samples for the chroma component of the current block on the basis of the alternative filter information.

公开(公告)号：US20220038707A1

公开(公告)日：2022-02-03

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 ,  H04N19/46 ,  H04N19/176

Abstract: A method for processing video signals and an apparatus therefor are disclosed. Specifically, a method for processing video signals on the basis of inter prediction comprises 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：US20210105481A1

公开(公告)日：2021-04-08

申请号：US17124989

申请日：2020-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan KIM ,  Seethal PALURI ,  Jaeho LEE

IPC: H04N19/137 ,  H04N19/132 ,  H04N19/70 ,  H04N19/46 ,  H04N19/176

Abstract: Disclosed are a method for processing a video signal and an apparatus therefor. Specifically, a method for processing a video signal by using affine prediction may comprise the steps of: checking whether the affine prediction is applied to a current block; when it is confirmed that the affine prediction is applied to the current block, acquiring at least one syntax element indicating a resolution of a motion vector difference used for the affine prediction; deriving a motion vector of a control point of the current block on the basis of the at least one syntax element; deriving a motion vector of each of multiple sub-blocks included in the current block on the basis of the motion vector of the control point; and generating a prediction sample of the current block by using the motion vector of each of the sub-blocks.

公开(公告)号：US20200374512A1

公开(公告)日：2020-11-26

申请号：US16942040

申请日：2020-07-29

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan Kim

IPC: H04N19/105 ,  H04N19/503 ,  H04N19/70

Abstract: Embodiments of the disclosure provide methods and devices for decoding video signals using inter prediction. According to an embodiment of the disclosure, a method for processing a video signal comprises constructing a reference picture list of a current picture in the video signal and performing a prediction for a current picture by using the reference picture list, wherein constructing the reference picture list comprising, if a first entry of the reference picture list corresponds to a short-term reference picture (STRP), obtaining a picture order count (POC) difference between a picture related to the first entry and another picture, and if a second entry of the reference picture list corresponds to a long-term reference picture (LTRP), obtaining a POC modulo value of a picture related to the second entry. A reference picture list for identifying a picture may be generated in a simplified and effective manner. Thus, the compression performance may be increased, and the computation time may be decreased.