公开(公告)号：US12015766B2

公开(公告)日：2024-06-18

申请号：US18120637

申请日：2023-03-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method executed by a video decoding apparatus according to the present document comprises the steps of: parsing a flag associated with weighted prediction from a bitstream; on the basis of the flag, parsing a prediction weighted table syntax from the bitstream; and on the basis of the prediction weighted table syntax, executing a weighted prediction on a current block in a current picture to reconstruct the current picture, wherein on the basis of the value of the flag being 1, the prediction weighted table syntax may be parsed from a picture header of the bitstream, and on the basis of the value of the flag being 0, the prediction weighted table syntax may be parsed from a slice header of the bitstream.

公开(公告)号：US12003720B2

公开(公告)日：2024-06-04

申请号：US17780333

申请日：2020-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/119 ,  H04N19/167 ,  H04N19/174 ,  H04N19/196 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/167 ,  H04N19/174 ,  H04N19/196 ,  H04N19/70

Abstract: In a method for decoding an image by a decoding apparatus according to the present disclosure, a current picture is configured to include a single slice, on the basis of a flag indicating whether information on a subpicture exists and a flag indicating whether the subpicture includes a single slice.

公开(公告)号：US11956450B2

公开(公告)日：2024-04-09

申请号：US17780476

申请日：2020-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/00 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/70 ,  H04N19/91

CPC classification number: H04N19/174 ,  H04N19/132 ,  H04N19/159 ,  H04N19/70 ,  H04N19/91

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 of which heights are explicitly signaled in a tile of a current picture from a bitstream; parsing height information about the heights of slices of which heights are explicitly signaled from the bitstream based on the number information; deriving the number of slices in the tile based on the number information and the height information; and decoding the current picture based on the slices in the tile, wherein the height information includes the same number of syntax elements as a value of the number information, and based on the value of the number information being n, the heights of a 0th slice to an n−1th slice in the tile may be derived based on the syntax elements.

公开(公告)号：US20240064305A1

公开(公告)日：2024-02-22

申请号：US18378772

申请日：2023-10-11

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: obtaining image information from a bitstream, wherein the image information includes a picture header associated with a current picture, and the current picture includes a plurality of slices; parsing at least one of a first flag and a second flag from the picture header; generating prediction samples by performing at least one of intra prediction and inter prediction on a current block in the current picture on the basis of at least one of the first flag and the second flag; generating reconstructed samples on the basis of the prediction samples; and generating a reconstructed picture on the basis of the reconstructed samples.

公开(公告)号：US11856183B2

公开(公告)日：2023-12-26

申请号：US17679570

申请日：2022-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/103 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/103 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186

Abstract: According to the disclosure of the present document, a quantization parameter for a quantized escape value in a palette mode can be derived on the basis of minimum quantization parameter information about a conversion skip mode to perform a scaling process on the quantized escape value. Therethrough, the data amount that is required to be signaled for palette mode coding can be reduced, and the efficiency of escape coding in the palette mode can be enhanced.

公开(公告)号：US11778237B1

公开(公告)日：2023-10-03

申请号：US17958696

申请日：2022-10-03

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/30 ,  H04N19/172 ,  H04N19/174

CPC classification number: H04N19/70 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/30 ,  H04N19/172 ,  H04N19/174

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：US20230291903A1

公开(公告)日：2023-09-14

申请号：US18198143

申请日：2023-05-16

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seung Hwan Kim ,  Hendry Hendry ,  Seethal Paluri

IPC: H04N19/124 ,  H04N19/119 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

CPC classification number: H04N19/124 ,  H04N19/119 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. The image decoding method performed by the image decoding apparatus, according to the present disclosure, may comprise the steps of: determining whether a color space transformation is applied to residual samples of a current block; determining quantization parameter of the current block on the basis of whether the color space transformation is applied; and determining a transformation coefficient of the current block on the basis of the quantization parameter. The step of determining the quantization parameter may be performed by limiting the range of an effective value of the quantization parameter such that a value of the quantization parameter has a value less than or equal to a predetermined upper value and greater than or equal to a predetermined lower value.

公开(公告)号：US20230254514A1

公开(公告)日：2023-08-10

申请号：US18135999

申请日：2023-04-18

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

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

CPC classification number: 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：US11716464B2

公开(公告)日：2023-08-01

申请号：US17843468

申请日：2022-06-17

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04N19/105 ,  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 may comprise the steps of: parsing a prediction weighted table syntax from a bitstream; parsing number information about weighted reference pictures in a reference picture list from the prediction weighted table syntax; deriving a weighting factor-related flag about the reference picture list on the basis of the number information; performing weighted prediction on a current block on the basis of the weighting factor-related flag so as to derive prediction samples of the current block; generating residual samples on the basis of residual information obtained from the bitstream; and reconstructing a current picture on the basis of the prediction samples and the residual samples, wherein the prediction weighted table syntax is parsed from a picture header of the bitstream.

公开(公告)号：US11677946B2

公开(公告)日：2023-06-13

申请号：US17731093

申请日：2022-04-27

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seung Hwan Kim ,  Hendry Hendry ,  Seethal Paluri

IPC: H04N19/12 ,  H04N19/18 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/12 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

Abstract: An image encoding/decoding method and device are provided. An image decoding method performed by an image decoding device according to the present disclosure may comprise the steps of: determining a prediction mode of the current block on the basis of prediction information obtained from a bitstream; on the basis of the prediction mode of the current block, obtaining a flag indicating whether a color space transform is applied to a residual sample of the current block; determining a quantization parameter of the current block on the basis of the flag; and determining a transform coefficient of the current block on the basis of the quantization parameter.