公开(公告)号：US11856209B2

公开(公告)日：2023-12-26

申请号：US18100255

申请日：2023-01-23

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry

IPC: H04N19/172 ,  H04N19/169 ,  H04N19/174 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/188 ,  H04N19/172 ,  H04N19/174 ,  H04N19/30 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring a flag indicating whether a picture header (PH) network abstraction layer (NAL) unit including a PH for the current picture is present; acquiring a video coding layer (VCL) NAL unit including a slice header and slice data for the current slice of the current picture; acquiring the PH on the basis of the flag; and decoding the current picture on the basis of the PH, the slice header, and the slice data.

公开(公告)号：US11825096B2

公开(公告)日：2023-11-21

申请号：US17737806

申请日：2022-05-05

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：US20230344987A1

公开(公告)日：2023-10-26

申请号：US18215776

申请日：2023-06-28

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：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：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：US11695964B2

公开(公告)日：2023-07-04

申请号：US17955260

申请日：2022-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Seung Hwan Kim

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

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：US11695934B2

公开(公告)日：2023-07-04

申请号：US17877032

申请日：2022-07-29

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry

IPC: H04N19/136 ,  H04N19/174 ,  H04N19/169

CPC classification number: H04N19/136 ,  H04N19/174 ,  H04N19/188

Abstract: Disclosed herein are an image encoding and decoding method and apparatus. The image decoding method may include obtaining video coding layer (VCL) network abstraction layer (NAL) unit type information of a current picture from a bitstream, determining a NAL unit type of each of a plurality of slices included in the current picture, based on the obtained VCL NAL unit type information, and decoding the plurality of slices based on the determined NAL unit type. The current picture may include a first subpicture and a second subpicture having different NAL unit types based on that at least some of the plurality of slices have different NAL unit types, and a NAL unit type of the second subpicture may be determined based on a NAL unit type of the first subpicture.

公开(公告)号：US11677958B2

公开(公告)日：2023-06-13

申请号：US17842464

申请日：2022-06-16

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.

公开(公告)号：US11653012B2

公开(公告)日：2023-05-16

申请号：US17572289

申请日：2022-01-10

Applicant: LG Electronics Inc.

Inventor： Jungsun Kim ,  Joonyoung Park ,  Chulkeun Kim ,  Hendry Hendry ,  Byeongmoon Jeon

IPC: H04N19/44 ,  H04N19/503 ,  H04N19/184 ,  H04N19/176 ,  H04N19/124 ,  H04N19/91 ,  H04N19/463

CPC classification number: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/503 ,  H04N19/91

Abstract: A method or coding image information, according to the present invention, comprises the steps of: binarizing according to different techniques, index values of forward prediction, backward prediction, and bidirectional prediction, depending on whether the bidirectional prediction is applied when inter-predicting a current block; and entropy coding a binarized codeword, wherein whether to apply the bidirectional prediction when inter-predicting the current block can be determined on the basis of the size of the current block. As a result, provided are a method for binarizing an inter-prediction direction of a prediction unit having a specific size, and an apparatus using same.

公开(公告)号：US11652986B2

公开(公告)日：2023-05-16

申请号：US17843872

申请日：2022-06-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding device according to this document comprises the steps of: parsing prediction weighted table syntax from a bitstream; parsing information on the number of reference pictures in a reference picture list from the prediction weighted table syntax; deriving weights for weighted prediction on the basis of the information on the number of reference pictures; deriving prediction samples of a current block by performing weighted prediction for the current block on the basis of the weights; and reconstructing a current picture on the basis of the prediction samples, wherein the prediction weighted table syntax may be parsed from a picture header of the bitstream.