公开(公告)号：US20220272370A1

公开(公告)日：2022-08-25

申请号：US17686124

申请日：2022-03-03

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Jie ZHAO ,  Seung Hwan KIM

IPC: H04N19/46 ,  H04N19/14 ,  H04N19/132 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise obtaining, from a picture parameter set, a first signaling flag specifying whether an identifier of a subpicture splitting a current picture is signaled using the picture parameter set, obtaining identifier information of the subpicture from the picture parameter set, based on the first signaling flag specifying that the identifier of the subpicture is signaled using the picture parameter set, and decoding the current picture by decoding a current subpicture identified based on the identifier information.

公开(公告)号：US20220132172A1

公开(公告)日：2022-04-28

申请号：US17570854

申请日：2022-01-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/124 ,  H04N19/30 ,  H04N19/176 ,  H04N19/18 ,  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：US20210400298A1

公开(公告)日：2021-12-23

申请号：US17281149

申请日：2019-09-30

Applicant: LG ELECTRONICS INC.

Inventor： Jane ZHAO ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/46 ,  H04N19/176

Abstract: The present disclosure discloses a method for processing a video signal and an apparatus therefor. Specifically, a method for processing a video signal by using an affine prediction may include: configuring a merge candidate list of a current block based on motion information of a neighboring block when the affine prediction is applied to the current block; acquiring a merge index indicating a merge candidate applied to the current block in the merge candidate list; deriving motion vectors for a plurality of control points of the current block by using motion information of the merge candidate indicated by the merge index; deriving a motion vector of each of a plurality of subblocks included in the current block by using the motion vectors of the control points; and generating a prediction block of the current block by using the motion vector of each of the subblocks.

公开(公告)号：US20200068195A1

公开(公告)日：2020-02-27

申请号：US16610829

申请日：2018-02-05

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Seunghwan KIM ,  Jin HEO ,  Seethal PALURI

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/129 ,  H04N19/593

Abstract: A prediction method according to the present invention comprises the steps of: deriving a prediction block on the basis of an intra prediction mode; deriving transform coefficients of the prediction block by applying transformation to the prediction block; applying frequency domain filtering to the transform coefficients of the prediction block; and generating a modified prediction block by applying inverse transformation on modified transform coefficients derived through the frequency domain filtering, wherein prediction performance can be improved thereby and the amount of data required for residual coding can be reduced.

公开(公告)号：US20250097424A1

公开(公告)日：2025-03-20

申请号：US18962039

申请日：2024-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding device according to the present document comprises the steps of: acquiring image information from a bitstream, the image information including a picture header associated with the current picture including a plurality of slices; parsing, from the picture header, a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and generating prediction samples by performing at least one of intra-prediction or inter-prediction for the slices in the current picture on the basis of the first flag or the second flag.

公开(公告)号：US20250071310A1

公开(公告)日：2025-02-27

申请号：US18943680

申请日：2024-11-11

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/463 ,  H04N19/119 ,  H04N19/132 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176

Abstract: A method for decoding an image by a decoding device, according to the present disclosure, can signal picture partitioning related information on the basis of a flag indicating whether sub-picture information exists and a flag indicating whether subpictures each include a single slice.

公开(公告)号：US20250047832A1

公开(公告)日：2025-02-06

申请号：US18923500

申请日：2024-10-22

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seung Hwan KIM ,  Seethal PALURI ,  Jie ZHAO

IPC: H04N19/102 ,  H04N19/169 ,  H04N19/70

Abstract: An image encoding/decoding method and apparatus for signaling decoded picture buffer (DPB) related information and profile tier level (PTL) related information and a method of transmitting a bitstream are provided. The image decoding method according to the present disclosure may comprise obtaining first information indicating the number of one or more decoded picture buffer (DPB) parameter syntax structures in a video parameter set (VPS), obtaining the one or more DPB parameter syntax structures from the VPS based on the first information, obtaining second information between one or more multi-layer output layer sets (OLSs) and the one or more DPB parameter syntax structures from the VPS based on the first information, selecting a DPB parameter syntax structure that applies to a current OLS based on the second information, and processing the current OLS based on the selected DPB parameter syntax structure.

公开(公告)号：US20240397051A1

公开(公告)日：2024-11-28

申请号：US18793081

申请日：2024-08-02

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

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

Abstract: In relation to an in-loop filtering procedure described in the present document, a virtual boundary is defined so as to further increase the subjective/objective visual quality of a restored picture and the in-loop filtering procedure can be applied across the virtual boundary. The virtual boundary can include, for example, a discontinuous edge such as a 360-degree image, a VR image, or picture in picture (PIP). For example, the virtual boundary can be at a predetermined appointed position, and the existence and/or the position thereof can be signaled. Embodiments of the present document present a method for efficiently signaling virtual boundary-related information.

公开(公告)号：US20240340423A1

公开(公告)日：2024-10-10

申请号：US18734711

申请日：2024-06-05

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/124 ,  H04N19/132 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/132 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: obtaining image information through a bitstream; and generating a reconstructed picture on the basis of the image information.

公开(公告)号：US20240333965A1

公开(公告)日：2024-10-03

申请号：US18738522

申请日：2024-06-10

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Mehdi SALEHIFAR

IPC: H04N19/52 ,  H04N19/137 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/52 ,  H04N19/137 ,  H04N19/176 ,  H04N19/70

Abstract: A method and device for processing a video signal are disclosed. More specifically, a method of processing a video signal based on inter prediction may comprise: deriving a motion vector predictor based on motion information of a neighboring block of a current block; deriving a motion vector difference of the current block based on layer information and index information; deriving a motion vector of the current block based on the motion vector predictor and the motion vector difference; generating a prediction block of the current block based on the motion vector of the current block; and generating a reconstructed block of the current block based on the prediction block and a residual block of the current block, wherein the layer information includes at least one syntax element indicating a layer group to which the current layer belongs.