公开(公告)号：US20240129510A1

公开(公告)日：2024-04-18

申请号：US18391365

申请日：2023-12-20

Applicant: LG Electronics Inc.

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

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

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

Abstract: A video decoding method by a video decoding apparatus includes: parsing, from a picture parameter set of a bitstream, a first flag related to whether a weighted prediction is applied to slices referring to the picture parameter set; parsing, from the picture parameter set, a second flag related to whether information about the weighted prediction is present in a picture header of the bitstream or is present in a slice header of the bitstream based on the first flag; parsing a prediction weighted table syntax from the picture header or the slice header based on the first flag and the second flag; generating prediction samples for the current block by performing weighted prediction for the current block in a current picture based on syntax elements in the prediction weighted table syntax; and generating reconstructed samples based on the prediction samples.

公开(公告)号：US20240129463A1

公开(公告)日：2024-04-18

申请号：US18535721

申请日：2023-12-11

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan Kim

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

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

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：US20240048698A1

公开(公告)日：2024-02-08

申请号：US18375196

申请日：2023-09-29

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM

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

CPC classification number: H04N19/117 ,  H04N19/82 ,  H04N19/132 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176 ,  H04N19/13

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：US20230328269A1

公开(公告)日：2023-10-12

申请号：US18208070

申请日：2023-06-09

Applicant: LG Electronics Inc.

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

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

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/109 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  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：US20230328268A1

公开(公告)日：2023-10-12

申请号：US18209926

申请日：2023-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seung Hwan KIM ,  Jie ZHAO

IPC: H04N19/503 ,  H04N19/176 ,  H04N19/169 ,  H04N19/70

CPC classification number: H04N19/503 ,  H04N19/176 ,  H04N19/188 ,  H04N19/70

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise parsing weight information specifying a weight for a reference sample from a bitstream according to a weight parameter syntax structure, and decoding a current block by performing inter prediction based on the weight information. The parsing according to the weight parameter syntax structure may comprise obtaining weight number information specifying the number of weight information obtained from the bitstream according to the weight parameter syntax structure and obtaining weight information from the weight parameter syntax structure based on the weight number information.

公开(公告)号：US20230291934A1

公开(公告)日：2023-09-14

申请号：US18199586

申请日：2023-05-19

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seung Hwan KIM

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423

CPC classification number: H04N19/70 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423

Abstract: An image encoding/decoding method and apparatus for signaling a VPS and a recording medium storing a bitstream are provided. An image decoding method may comprise obtaining first information indicating whether each output layer set (OLS) specified by a video parameter set (VPS) includes only one layer, obtaining second information indicating the number of decoded picture buffer (DPB) parameter syntax structures in the VPS, based on the first information, obtaining the DPB parameter syntax structures in the VPS based on the second information, and managing a DPB based on the DPB parameter syntax structures.

公开(公告)号：US20230239478A1

公开(公告)日：2023-07-27

申请号：US18130211

申请日：2023-04-03

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding device according to the present document may comprise 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, at least one of a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header, or a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; 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 at least one of the first flag or the second flag; and generating reconstructed samples on the basis of the prediction samples.

公开(公告)号：US20230156210A1

公开(公告)日：2023-05-18

申请号：US17916227

申请日：2021-03-31

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seung Hwan KIM ,  Seethal PALURI

IPC: H04N19/46 ,  H04N19/172

CPC classification number: H04N19/46 ,  H04N19/172

Abstract: Provided is an image encoding/decoding method and apparatus. The image decoding method may include obtaining first information on whether a current picture might be partitioned, from a bitstream, obtaining, from the bitstream, second information on the number of one or more subpictures included in the current picture based on the first information, deriving one or more subpictures, based on the second information and decoding the one or more subpictures.

公开(公告)号：US20230156201A1

公开(公告)日：2023-05-18

申请号：US17918288

申请日：2021-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seung Hwan KIM

IPC: H04N19/187 ,  H04N19/169

CPC classification number: H04N19/187 ,  H04N19/188

Abstract: An image encoding/decoding method and apparatus is provided. The image decoding method comprises determining at least one layer in an output layer set (OLS), and determining a number of sublayers for the at least one layer,

公开(公告)号：US20230144793A1

公开(公告)日：2023-05-11

申请号：US17915302

申请日：2021-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seung Hwan KIM

IPC: H04N19/423 ,  H04N19/70

CPC classification number: H04N19/423 ,  H04N19/70

Abstract: Disclosed herein are an image encoding and decoding method and apparatus for signaling information on the number of DPB parameters, and a recording medium storing a bitstream. An image decoding method may comprise obtaining first information indicating the number of decoded picture buffer (DPB) parameter syntax structures in a video parameter set (VPS), computing the number of DPB parameter syntax structures in the VPS based on the first information, obtaining the DPB parameter syntax structures in the VPS based on the number of DPB parameter syntax structures, and managing a DPB based on the DPB parameter syntax structures.