公开(公告)号：US20250063164A1

公开(公告)日：2025-02-20

申请号：US18933411

申请日：2024-10-31

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seunghwan KIM

IPC: H04N19/117 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: obtaining image information from a bitstream; generating a reconstructed picture of the current picture; deriving deblocking filter parameter information related to deblocking filter parameters on the basis of the image information; and performing deblocking filtering on the reconstructed picture on the basis of the deblocking filter parameters so as to generate a modified reconstructed picture.

公开(公告)号：US20250047908A1

公开(公告)日：2025-02-06

申请号：US18923521

申请日：2024-10-22

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/82 ,  H04N19/18

Abstract: According to an image coding method according to embodiments of the present document, information related to in-loop filtering may be efficiently signaled, and repetitive procedures for signaling subpicture-related information may be reduced.

公开(公告)号：US20240414327A1

公开(公告)日：2024-12-12

申请号：US18697617

申请日：2022-09-30

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Jaehyun LIM ,  Hyeongmoon JANG ,  Seunghwan KIM

IPC: H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/132 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503 ,  H04N19/593 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device includes: obtaining image information including prediction-related information from a bitstream; determining whether combined inter-picture merge and intra-picture prediction (CIIP) is applied to a current block, on the basis of the prediction-related information; deriving a prediction sample of the current block on the basis of it being determined that the CIIP is applied to the current block; and generating a reconstructed sample of the current block on the basis of the prediction sample, wherein the prediction sample of the current block is derived on the basis of an intra prediction sample and an inter prediction sample, wherein the intra prediction sample is derived on the basis of an intra prediction mode, wherein the intra prediction mode is derived on the basis of a decoder side intra mode derivation (DIMD) mode or a template-based inter mode derivation (TIMD) mode.

公开(公告)号：US20240397078A1

公开(公告)日：2024-11-28

申请号：US18693881

申请日：2022-09-30

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/513 ,  H04N19/139 ,  H04N19/176 ,  H04N19/57 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device is provided. The method comprises the steps of: determining whether to use a multi-layer decoder-side motion vector refinement (MDMVR) for a current block; deriving a refined motion vector for the current block on the basis of using the MDMVR for the current block; deriving prediction samples for the current block on the basis of the refined motion vector; and generating reconstruction samples for the current block on the basis of the prediction samples.

公开(公告)号：US20240364882A1

公开(公告)日：2024-10-31

申请号：US18644040

申请日：2024-04-23

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：US20240357120A1

公开(公告)日：2024-10-24

申请号：US18750541

申请日：2024-06-21

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：US20240333957A1

公开(公告)日：2024-10-03

申请号：US18737886

申请日：2024-06-07

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seung Hwan KIM ,  Jie ZHAO

IPC: H04N19/503 ,  H04N19/169 ,  H04N19/176 ,  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：US20240305795A1

公开(公告)日：2024-09-12

申请号：US18662228

申请日：2024-05-13

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/186 ,  H04N19/107 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/186 ,  H04N19/107 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: acquiring image information comprising a flag indicating whether or not one chroma quantization parameter table is to be applied with respect to chroma components, and prediction information and residual information regarding the chroma components; on the basis of the flag, deriving a chroma quantization parameter for the chroma components; deriving residual samples for the chroma components on the basis of the residual information and the chroma quantization parameter; and generating a reconstructed picture on the basis of prediction samples, which have been derived on the basis of the prediction information, and the residual samples.

公开(公告)号：US20240298034A1

公开(公告)日：2024-09-05

申请号：US18605477

申请日：2024-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Jie Zhao ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/1887 ,  H04N19/82

Abstract: According to the disclosure of the present document, an image decoding method performed by a decoding device comprises the steps of: acquiring, through a bitstream, image information including prediction mode information and residual information; deriving a prediction mode of a current block on the basis of the prediction mode information; deriving prediction samples on the basis of the prediction mode; deriving residual samples on the basis of the residual information; generating reconstruction samples on the basis of the prediction samples and the residual samples; deriving filter coefficients for an adaptive loop filter (ALF) procedure for the reconstruction samples; and generating modified reconstruction samples on the basis of the reconstruction samples and the filter coefficients, wherein the image information includes a first adaptation parameter set (APS) including an ALF data field, and the ALF data field includes ALF parameters used to derive the filter coefficients.

公开(公告)号：US20240291988A1

公开(公告)日：2024-08-29

申请号：US18660654

申请日：2024-05-10

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/124 ,  H04N19/172 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/172 ,  H04N19/186 ,  H04N19/70

Abstract: A method for decoding an image performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.