公开(公告)号：US12192470B2

公开(公告)日：2025-01-07

申请号：US18381446

申请日：2023-10-18

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46

Abstract: A video decoding method performed by a video decoding device according to the present document comprises 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, a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and 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 the first flag or the second flag.

公开(公告)号：US12177418B2

公开(公告)日：2024-12-24

申请号：US17780142

申请日：2020-12-07

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Seunghwan Kim ,  Seethal Paluri

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/169 ,  H04N19/176

Abstract: According to the disclosure of the present document, by signaling NAL unit-related information for a first picture and a collocated reference picture-related information for a second picture following the first picture in a decoding order, a collocated reference picture with respect to the second picture can be limited, and thus the image coding efficiency can be enhanced.

公开(公告)号：US12160617B2

公开(公告)日：2024-12-03

申请号：US17800482

申请日：2021-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri

IPC: H04N19/80 ,  H04N19/172 ,  H04N19/46

Abstract: According to embodiments of the present document, information for performing in-loop filtering by crossing virtual boundaries can be efficiently signaled. In one embodiment, the value of a virtual boundary-related flag signaled through a picture header can be determined on the basis of the value of a virtual boundary-related flag signaled through an SPS.

公开(公告)号：US12113992B2

公开(公告)日：2024-10-08

申请号：US18135291

申请日：2023-04-17

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

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

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

Abstract: According to the disclosure of the present document, scaling list data transferred from an adaptation parameter set (APS) can be signaled through a hierarchical structure, and restrictions are placed on the scaling list data transferred from the APS, whereby the amount of data to be signaled for video/image coding can be reduced, and easiness in implementation can be provided.

公开(公告)号：US12101480B2

公开(公告)日：2024-09-24

申请号：US17779487

申请日：2020-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: A method by which a decoding apparatus decodes an image, according to the present disclosure, can signal slice-associated information on the basis of a flag related to whether there is sub-picture information and a flag related to whether a sub-picture includes a single slice.

公开(公告)号：US12096011B2

公开(公告)日：2024-09-17

申请号：US17598123

申请日：2020-04-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/30 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18

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

Abstract: According to a disclosure of the present document, scaling list data and scaling list-related information may be hierarchically signaled, and through same, the amount of data which must be signaled for video/image coding may be reduced, and coding efficiency may be increased.

公开(公告)号：US12081805B2

公开(公告)日：2024-09-03

申请号：US17777265

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/82 ,  H04N19/103 ,  H04N19/117 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/82 ,  H04N19/103 ,  H04N19/117 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70

Abstract: In a decoding method performed by a decoding apparatus according to embodiments of the present document, whether signaling of information related to virtual boundaries is present in a sequence parameter set (SPS) or picture header information may be determined based on a virtual boundaries enabled flag.

公开(公告)号：US12034931B2

公开(公告)日：2024-07-09

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: H04N19/18 ,  H04N19/119 ,  H04N19/124 ,  H04N19/176 ,  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：US12022127B2

公开(公告)日：2024-06-25

申请号：US17780294

申请日：2020-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/70 ,  H04N19/107 ,  H04N19/119 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/503 ,  H04N19/593

CPC classification number: H04N19/70 ,  H04N19/107 ,  H04N19/119 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/503 ,  H04N19/593

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 for which height is explicitly signaled in a tile of a current picture from a bitstream; parsing height information about the height of the slices for which height is explicitly signaled from the bitstream based on the number information; and decoding the current picture based on the number information and the height information.

公开(公告)号：US12022101B2

公开(公告)日：2024-06-25

申请号：US17916260

申请日：2021-03-31

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Seung Hwan Kim ,  Seethal Paluri

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/167 ,  H04N19/172 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/119 ,  H04N19/167 ,  H04N19/172 ,  H04N19/82

Abstract: Provided is an image encoding/decoding method and apparatus. The image decoding method comprises obtaining subpicture information from a bitstream, deriving one or more subpictures in a current picture based on the subpicture information, and decoding a current subpicture in the current picture based on the subpicture information. The subpicture information may comprise a first flag specifying whether each of the one or more subpictures is treated as a picture, and, based on the bitstream including at least one first layer referring to a current layer including the current picture, the first flag for the first subpicture included in a first layer and corresponding to the current subpicture, and the first flag for the current subpicture have the same value.