公开(公告)号：US20220337836A1

公开(公告)日：2022-10-20

申请号：US17731031

申请日：2022-04-27

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/124 ,  H04N19/18 ,  H04N19/176 ,  H04N19/70 ,  H04N19/186 ,  H04N19/60 ,  H04N19/132

Abstract: Provided are an image encoding/decoding method and device. An image decoding method performed by an image decoding device according to the present disclosure includes the steps of: determining a quantization parameter of the current block on the basis of whether color space conversion is applied to a residual sample of the current block; determining a transform coefficient of the current block on the basis of the quantization parameter; determining the residual sample of the current block by using the transform coefficient; and resetting the value of the residual sample on the basis of whether the color space conversion is applied.

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：US20250150637A1

公开(公告)日：2025-05-08

申请号：US19018991

申请日：2025-01-13

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

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

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：US20250150612A1

公开(公告)日：2025-05-08

申请号：US19017080

申请日：2025-01-10

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/176 ,  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; and generating a reconstructed picture on the basis of the image information.

公开(公告)号：US20250142052A1

公开(公告)日：2025-05-01

申请号：US19005629

申请日：2024-12-30

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/105 ,  H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70 ,  H04N19/82

Abstract: According to the disclosure of the present document, scaling list data transmitted from an adaptation parameter set (APS) can be signaled through a hierarchical structure. In addition, by setting a limit on the scaling list data transmitted from the APS, it is possible to reduce the amount of data which has to be signaled for video/image coding, and facilitate implementation.

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.