公开(公告)号：US20220150481A1

公开(公告)日：2022-05-12

申请号：US17435805

申请日：2020-03-06

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan KIM ,  Seethal PALURI

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/196 ,  H04N19/176

Abstract: According to the present disclosure, reshaper data and/or ALF parameters can be signaled from a parameter set on the basis of type information, 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：US20220103849A1

公开(公告)日：2022-03-31

申请号：US17546599

申请日：2021-12-09

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/132 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: deriving a chroma quantization parameter table on the basis of quantization parameter data; deriving a quantization parameter for combined chroma coding on the basis of the chroma quantization parameter table; deriving prediction samples of a current chroma block on the basis of prediction information; deriving transform coefficients of the current chroma block on the basis of residual information; deriving residual samples by dequantizing the transform coefficients on the basis of the quantization parameter; and generating a reconstructed picture on the basis of the prediction samples and the residual samples.

公开(公告)号：US20220078475A1

公开(公告)日：2022-03-10

申请号：US17419869

申请日：2019-12-31

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Mehdi SALEHIFAR

IPC: H04N19/52 ,  H04N19/137 ,  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 comprise: deriving a motion vector predictor based on motion information of a neighboring block of a current block; deriving a motion vector difference of the current block based on layer information and index information; deriving a motion vector of the current block based on the motion vector predictor and the motion vector difference; generating a prediction block of the current block based on the motion vector of the current block; and generating a reconstructed block of the current block based on the prediction block and a residual block of the current block, wherein the layer information includes at least one syntax element indicating a layer group to which the current layer belongs.

公开(公告)号：US20220030237A1

公开(公告)日：2022-01-27

申请号：US17495718

申请日：2021-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/50

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: receiving a bitstream containing at least one of segmentation information of a current picture and prediction information for a current block included in the current picture; deriving a first segmentation structure of the current picture, which is based on multiple tiles, on the basis of the segmentation information of the current picture including at least one of information of the number of width-parsing columns, information of the last width, information of the number of height-parsing rows, and information of the last height; deriving a block predicted for the current block, on the basis of the prediction information for the current block contained in one of the multiple tiles; and generating reconstruction samples for the current block on the basis of the predicted block.

公开(公告)号：US20210021834A1

公开(公告)日：2021-01-21

申请号：US17060792

申请日：2020-10-01

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/91 ,  H04N19/172 ,  H04N19/52 ,  H04N19/184 ,  H04N19/46 ,  H04N19/167

Abstract: A picture decoding method performed by a decoding apparatus according to the present disclosure includes obtaining motion prediction information from bitstream, generating an affine MVP candidate list including affine MVP candidates for a current block, deriving CPMVPs for respective CPs of the current block based on one of the affine MVP candidates included in the affine MVP candidate list, deriving the CPMVDs for the CPs of the current block based on information on CPMVDs for each of the CPs included in the obtained motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, deriving prediction samples for the current block based on the CPMVs, and generating reconstructed samples for the current block based on the derived prediction samples.

公开(公告)号：US20250119591A1

公开(公告)日：2025-04-10

申请号：US18982642

申请日：2024-12-16

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seung Hwan KIM

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423

Abstract: An image encoding/decoding method and apparatus for signaling a VPS and a recording medium storing a bitstream are provided. An image decoding method may comprise obtaining first information indicating whether each output layer set (OLS) specified by a video parameter set (VPS) includes only one layer, obtaining second information indicating the number of decoded picture buffer (DPB) parameter syntax structures in the VPS, based on the first information, obtaining the DPB parameter syntax structures in the VPS based on the second information, and managing a DPB based on the DPB parameter syntax structures.

公开(公告)号：US20250071284A1

公开(公告)日：2025-02-27

申请号：US18825978

申请日：2024-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyeong Moon JANG ,  Seethal PALURI

IPC: H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure may include: obtaining palette information and palette index prediction information of a current block from a bitstream; constructing a palette predictor for the current block based on the palette information and constructing a palette table for the current block based on the palette predictor; generating a palette index map for the current block based on the palette index prediction information; and decoding the current block based on the palette table and the palette index map, wherein the palette predictor may be initialized using a user defined palette entry obtained from at least one of an adaptation parameter set (APS), a picture parameter set (PPS) or a slice header.

公开(公告)号：US20250016380A1

公开(公告)日：2025-01-09

申请号：US18888907

申请日：2024-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/82 ,  H04N19/156 ,  H04N19/18

Abstract: According to embodiments of the present document, the subjective/objective quality of an image can be improved through image coding on the basis of subpictures and/or virtual boundaries, and consumption of hardware resources required for coding can be reduced.

公开(公告)号：US20240430461A1

公开(公告)日：2024-12-26

申请号：US18825388

申请日：2024-09-05

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

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：US20240414362A1

公开(公告)日：2024-12-12

申请号：US18810056

申请日：2024-08-20

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM

IPC: 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.