公开(公告)号：US20220286700A1

公开(公告)日：2022-09-08

申请号：US17638628

申请日：2020-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM ,  Seethal PALURI

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/132 ,  H04N19/186 ,  H04N19/176

Abstract: According to the disclosure of the present document, information used in a palette coding mode may be effectively signaled. For example, information relating to availability of a palette mode may be signaled, and information relating to a quantized escape value may be signaled on the basis of the information relating to the availability of the palette mode. In addition, as a quantization parameter for the quantized escape value, minimum quantization parameter information relating to a transform skip mode may be signaled. Accordingly, information required for palette mode coding can be efficiently signaled, and escape coding efficiency in a palette mode can be improved.

公开(公告)号：US20220286685A1

公开(公告)日：2022-09-08

申请号：US17745719

申请日：2022-05-16

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

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

Abstract: According to embodiments of the present document, information for carrying out in-loop filtering across virtual boundaries can be efficiently signaled. For example, in-loop filtering can be carried out on the basis of signaling of information which is related to whether in-loop filtering across virtual boundaries is enabled or not.

公开(公告)号：US20220286678A1

公开(公告)日：2022-09-08

申请号：US17629597

申请日：2020-08-20

Applicant: LG Electronics Inc.

Inventor： Jie ZHAO ,  Seethal PALURI ,  Seunghwan KIM

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

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：US20220279186A1

公开(公告)日：2022-09-01

申请号：US17624991

申请日：2020-07-03

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

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

Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: acquiring image information including chroma quantization parameter data of at least one chroma QP mapping table for chroma components, and prediction information and residual information regarding the chroma components; deriving the chroma QP mapping table on the basis of the chroma quantization parameter data; deriving a chroma quantization parameter for the chroma components on the basis of the chroma QP mapping table; deriving prediction samples for the chroma components on the basis of the prediction information; deriving residual samples on the basis of the residual information and the chroma quantization parameter; and generating a reconstructed picture on the basis of the prediction samples and the residual samples.

公开(公告)号：US20220217405A1

公开(公告)日：2022-07-07

申请号：US17600509

申请日：2020-03-19

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jaehyun LIM ,  Jie ZHAO

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/18 ,  H04N19/61 ,  H04N19/503 ,  H04N19/169

Abstract: According to the present disclosure, ALF parameters and/or LMCS parameters can be hierarchically signaled, thereby enabling 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：US20220150539A1

公开(公告)日：2022-05-12

申请号：US17435656

申请日：2020-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/593 ,  H04N19/186 ,  H04N19/132 ,  H04N19/176 ,  H04N19/85 ,  H04N19/30 ,  H04N19/117 ,  H04N19/11

Abstract: According to the disclosure of the present document, reshaper data and/or an ALF parameter can be signaled adaptively from a parameter set, thereby reducing the amount of data to be signaled for video/image coding and improving coding efficiency.

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.