公开(公告)号：US20240291984A1

公开(公告)日：2024-08-29

申请号：US18644627

申请日：2024-04-24

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：US12069290B2

公开(公告)日：2024-08-20

申请号：US18211930

申请日：2023-06-20

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seung Hwan Kim

IPC: H04N19/55 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus comprises obtaining inter prediction information of a current block and wraparound information from a bitstream, and generating a prediction block of the current block based on the inter prediction information and the wraparound information. The wraparound information may comprise a first flag specifying whether wraparound motion compensation is enabled for a current picture including the current block. Based on the first flag having a predetermined value specifying that the wraparound motion compensation is enabled for the current picture, the prediction block may be generated by performing the wraparound motion compensation, and the wraparound motion compensation may be performed based on either boundaries of a current subpicture including the current block or boundaries of a reference picture of the current block, based on whether the current subpicture is independently coded or not.

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.

公开(公告)号：US12003717B2

公开(公告)日：2024-06-04

申请号：US18219491

申请日：2023-07-07

Applicant: LG Electronics Inc.

Inventor： Seungwook Park ,  Jaehyun Lim ,  Yongjoon Jeon ,  Chulkeun Kim ,  Jungsun Kim ,  Naeri Park ,  Hendry Hendry ,  Byeongmoon Jeon ,  Joonyoung Park

IPC: H04N19/117 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82 ,  H04N19/86

Abstract: A deblocking filtering method, a boundary strength (bS) deriving method, and encoding/decoding method and apparatus using the methods are provided. The bS deriving method includes the steps of: deriving a boundary of a deblocking filtering unit block which is a unit block on which deblocking filtering is performed; and setting a bS for each bS setting unit block in the deblocking filtering unit block. Here, the step of setting the bS includes setting a bS value of a target boundary corresponding to the boundary of the deblocking filtering unit block as the bS setting unit block.

公开(公告)号：US11997274B2

公开(公告)日：2024-05-28

申请号：US18139034

申请日：2023-04-25

Applicant: LG ELECTRONICS INC.

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

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

公开(公告)号：US11991391B2

公开(公告)日：2024-05-21

申请号：US18125307

申请日：2023-03-23

Applicant: LG Electronics Inc.

Inventor： Jaehyun Lim ,  Seungwook Park ,  Yongjoon Jeon ,  Jungsun Kim ,  Hendry Hendry ,  Byeongmoon Jeon ,  Joonyoung Park ,  Chulkeun Kim ,  Naeri Park

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/463 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/463 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96

Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the pluraity of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.

公开(公告)号：US11917210B2

公开(公告)日：2024-02-27

申请号：US18073686

申请日：2022-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Junghak Nam ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/70 ,  H04N19/172 ,  H04N19/184

Abstract: A method by which a video decoding device decodes a video, according to the present document, comprises the steps of: parsing, from a bitstream, level information indicating the level with which output layer sets comply; acquiring, from the bitstream, constraint information about constraints with which the output layer sets comply; and performing a decoding procedure on the current picture on the basis of the level information and the constraint information, wherein the level information and the constraint information are included in a profile_tier_level syntax structure of the bitstream, and the constraint information in the profile_tier_level syntax structure can be next to the level information.

公开(公告)号：US11895314B2

公开(公告)日：2024-02-06

申请号：US17857285

申请日：2022-07-05

Applicant: LG Electronics Inc.

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

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

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：US11838500B2

公开(公告)日：2023-12-05

申请号：US17857281

申请日：2022-07-05

Applicant: LG Electronics Inc.

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/503 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/503 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: parsing, from a bitstream, flags associated with weighted prediction; parsing a prediction weighted table syntax from a picture header of the bitstream on the basis of the flags; generating prediction samples regarding a current block in a current picture on the basis of syntax elements in the prediction weighted table syntax; and generating reconstructed samples on the basis of the prediction samples, wherein the flags comprise a first flag associated with whether the weighted prediction is applied to slices referring to a picture parameter set of the bitstream, and a second flag associated with whether information related to the weighted prediction is present in the picture header, and the second flag may be parsed from the picture parameter set on the basis of the first flag.

公开(公告)号：US11805264B2

公开(公告)日：2023-10-31

申请号：US17847622

申请日：2022-06-23

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/169 ,  H04N19/174

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/174 ,  H04N19/70

Abstract: According to the disclosure of the present document, a syntax structure and a syntax element may be provided wherein the syntax structure and syntax element enable, on the basis of whether an NAL unit type mixed with a picture is allowed, the existence of signaling-related information of a reference picture list with respect to a slice having a specific NAL unit type in the picture.