公开(公告)号：US12143617B2

公开(公告)日：2024-11-12

申请号：US17686124

申请日：2022-03-03

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Jie Zhao ,  Seung Hwan Kim

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise obtaining, from a picture parameter set, a first signaling flag specifying whether an identifier of a subpicture splitting a current picture is signaled using the picture parameter set, obtaining identifier information of the subpicture from the picture parameter set, based on the first signaling flag specifying that the identifier of the subpicture is signaled using the picture parameter set, and decoding the current picture by decoding a current subpicture identified based on the identifier information.

公开(公告)号：US12132918B2

公开(公告)日：2024-10-29

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.

公开(公告)号：US12126837B2

公开(公告)日：2024-10-22

申请号：US17792641

申请日：2021-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/82

Abstract: According to embodiments of the present document, a zero-order exponential Golomb coding scheme(ue(v)) is used for a parsing procedure of an information/syntax element related to luma/chroma ALF filter coefficient absolute values, so that operational overhead and complexity can be reduced. In addition, since the range of values of the information related to the luma/chroma ALF filter coefficient absolute values is fixed, coding that uses ue(v) can be efficiently performed.

公开(公告)号：US12113960B2

公开(公告)日：2024-10-08

申请号：US17598151

申请日：2020-04-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/105 ,  H04N19/126 ,  H04N19/132 ,  H04N19/139 ,  H04N19/17 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/126 ,  H04N19/132 ,  H04N19/139 ,  H04N19/17 ,  H04N19/30 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data and scaling list-related information may be hierarchically signaled, thereby enabling a reduction in data volume to be signaled for video/image coding and an increase in coding efficiency.

公开(公告)号：US12096017B2

公开(公告)日：2024-09-17

申请号：US17638787

申请日：2020-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seethal Paluri ,  Seunghwan Kim

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

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

Abstract: According to the disclosure of the present documents, a quantization parameter used in a scaling process of a quantized escape value in a palette mode may be derived on the basis of minimum quantization parameter information relating to a transform skip mode. Accordingly, the amount of data required to be signaled for video/image coding can be reduced and escape coding in a palette mode can be effectively performed.

公开(公告)号：US12088812B2

公开(公告)日：2024-09-10

申请号：US17777241

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

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

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

Abstract: In relation to an in-loop filtering procedure described in the present document, a virtual boundary is defined so as to further increase the subjective/objective visual quality of a restored picture and the in-loop filtering procedure can be applied across the virtual boundary. The virtual boundary can include, for example, a discontinuous edge such as a 360-degree image, a VR image, or picture in picture (PIP). For example, the virtual boundary can be at a predetermined appointed position, and the existence and/or the position thereof can be signaled. Embodiments of the present document present a method for efficiently signaling virtual boundary-related information.

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：US12075050B2

公开(公告)日：2024-08-27

申请号：US17629597

申请日：2020-08-20

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring image information; and generating a reconstruction picture on the basis of the image information.

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：US12069254B2

公开(公告)日：2024-08-20

申请号：US18141159

申请日：2023-04-28

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/91

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/91

Abstract: According to the disclosure of the present disclosure, the index of an alternative filter is derived from ALF information, and an ALF procedure for a chroma component of a current block can be performed on the basis of the alternative filter.