公开(公告)号：US11412239B2

公开(公告)日：2022-08-09

申请号：US17559130

申请日：2021-12-22

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/70

Abstract: According to the disclosure of the present document, an ID value of an LMCS APS may be within a predetermined range. Thus, an LMCS procedure can be efficiently performed, and the complexity of LMCS is reduced. Since the performance of LMCS is improved, efficiency of video/image coding may increase.

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：US12262033B2

公开(公告)日：2025-03-25

申请号：US17616935

申请日：2020-06-11

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/30 ,  H04N19/103 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data and scaling list-related information may be signaled hierarchically, thereby reducing the amount of data to be signaled for video/image coding and increasing coding efficiency.

公开(公告)号：US12149727B2

公开(公告)日：2024-11-19

申请号：US18208070

申请日：2023-06-09

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/51 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: parsing a flag for weighted prediction from a bitstream; parsing a prediction weighted table syntax from the bitstream on the basis of the flag; generating prediction samples by performing weighted prediction on a current block within a current picture on the basis of the prediction weighted table syntax; and generating reconstructed samples for the current block on the basis of the prediction samples, wherein the prediction weighted table syntax may be parsed from a picture header or slice header of the bitstream on the basis of a value of the flag.

公开(公告)号：US12143617B2

公开(公告)日：2024-11-12

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 ,  H04N19/132 ,  H04N19/14 ,  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：US12120323B2

公开(公告)日：2024-10-15

申请号：US18213614

申请日：2023-06-23

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/186 ,  H04N19/109 ,  H04N19/159 ,  H04N19/172 ,  H04N19/96

CPC classification number: H04N19/186 ,  H04N19/109 ,  H04N19/159 ,  H04N19/172 ,  H04N19/96

Abstract: According to a disclosure of the present document, image information including prediction mode information and information associated with luma mapping with chroma scaling (LMCS) is acquired from a bitstream, wherein the image information includes LMCS adaptation parameter sets (APSs), and by limiting the range of APS ID information included in the LMCS APSs, a memory used in a LMCS procedure may be reduced (limited).

公开(公告)号：US12096017B2

公开(公告)日：2024-09-17

申请号：US17638787

申请日：2020-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seethal Paluri ,  Seunghwan Kim

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

CPC classification number: H04N19/46 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

Abstract: According to the disclosure of the present documents, a quantization parameter used in a scaling process of a quantized escape value in a palette mode may be derived on the basis of minimum quantization parameter information relating to a transform skip mode. Accordingly, the amount of data required to be signaled for video/image coding can be reduced and escape coding in a palette mode can be effectively performed.

公开(公告)号：US12081777B2

公开(公告)日：2024-09-03

申请号：US18090871

申请日：2022-12-29

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seung Hwan Kim ,  Mehdi Salehifar

IPC: H04N11/02 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/463

CPC classification number: H04N19/186 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463

Abstract: Provided are an image encoding/decoding method and device. The image decoding method performed by the image decoding device, according to the present disclosure, may comprise the steps of: determining a residual sample of a current block; and resetting the value of the residual sample on the basis of whether a color space transform is applied. The step for resetting the value of the residual block may be performed on the basis of a half value of a chroma residual sample value.

公开(公告)号：US12075050B2

公开(公告)日：2024-08-27

申请号：US17629597

申请日：2020-08-20

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring image information; and generating a reconstruction picture on the basis of the image information.

公开(公告)号：US12052424B2

公开(公告)日：2024-07-30

申请号：US18141782

申请日：2023-05-01

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/137 ,  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: parsing a flag pertaining to a weighted prediction from a bitstream; parsing the syntax of a prediction weighted table from the bitstream based on the flag; performing a weighted prediction for the current block in the current picture based on the prediction weighted table syntax to generate prediction samples for the current block; generating residual samples based on residual information acquired from the bitstream; and generating reconstructed samples for the current block based on the prediction samples and the residual samples, wherein the prediction weighted table syntax can be parsed from the picture header of the bitstream based on the value of the flag being 1, and can be parsed from the slice header of the bitstream based on the value of the flag being 0.