公开(公告)号：US20220103848A1

公开(公告)日：2022-03-31

申请号：US17546499

申请日：2021-12-09

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/132 ,  H04N19/186 ,  H04N19/176

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

公开(公告)号：US20220021884A1

公开(公告)日：2022-01-20

申请号：US17296154

申请日：2019-12-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Mehdi SALEHIFAR

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176

Abstract: A method and device for processing a video signal are disclosed. More specifically, a method of processing a video signal based on inter prediction may include when a motion vector prediction (MVP) mode is applied to a current block, deriving a motion vector predictor based on motion information of a neighboring block of the current block; in a pre-defined layer structure in which at least one combination of horizontal and vertical components of a motion vector difference is distinguished by a plurality of layers, obtaining layer information indicating a current layer to which a motion vector difference used in inter prediction of the current block belongs; obtaining index information indicating a specific combination in the current layer; deriving the motion vector difference of the current block based on the layer information and the index information; deriving a motion vector of the current block based on the motion vector predictor and the motion vector difference; and generating a prediction block of the current block based on the motion vector of the current block.

公开(公告)号：US20210392333A1

公开(公告)日：2021-12-16

申请号：US17400883

申请日：2021-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/82 ,  H04N19/46 ,  H04N19/169 ,  H04N19/176

Abstract: According to the present disclosure, ALF parameters and/or LMCS parameters can be hierarchically signaled, which enables a reduction in the amount of data to be signaled for video/image coding and an increase in the coding efficiency.

公开(公告)号：US20250126240A1

公开(公告)日：2025-04-17

申请号：US18727021

申请日：2023-01-06

Applicant: LG Electronics Inc.

Inventor： Seunghwan KIM ,  Seethal PALURI ,  Jie ZHAO

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/577

Abstract: According to a present disclosure, an image decoding method performed by a decoding apparatus, the image decoding method comprising obtaining image information including inter prediction-related information of a current block from a bitstream; configuring at least one of a merge list of the current block and an advanced motion vector prediction (AMVP) list of the current block for inter prediction; deriving motion information of the current block on the basis of the at least one of the merge list of the current block and the AMVP list of the current block; generating prediction samples for the current block based on the motion information of the current block; and generating reconstruction samples for the current block based on the prediction samples for the current block, wherein the merge list includes at least one of a primary merge list and a secondary merge list (SML).

公开(公告)号：US20250113022A1

公开(公告)日：2025-04-03

申请号：US18977335

申请日：2024-12-11

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46

Abstract: According to embodiments described herein, sub-pictures and/or virtual boundaries can be used for coding an image. For example, sub-pictures in the current picture can be used for predicting, reconstructing, and/or filtering the current picture. Virtual boundaries can be used for filtering reconstructed samples of the current picture. Through image coding based on the subpictures and/or virtual boundaries according to embodiments described herein, the subjective/objective quality of an image can be improved, and the consumption of hardware resources necessary for the coding can be reduced.

公开(公告)号：US20250080762A1

公开(公告)日：2025-03-06

申请号：US18883138

申请日：2024-09-12

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seung Hwan KIM

IPC: 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：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.