公开(公告)号：US11470305B2

公开(公告)日：2022-10-11

申请号：US17179639

申请日：2021-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Ling Li ,  Seunghwan Kim ,  Jin Heo ,  Sunmi Yoo ,  Jangwon Choi ,  Jungah Choi

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method according to this document includes constructing a most probable mode (MPM) list by deriving MPM candidates for a current block based on a neighboring block adjacent to the current block, deriving an intra prediction mode for the current block based on the MPM list, generating predicted samples by performing prediction for the current block based on the intra prediction mode, and generating a reconstructed picture for the current block based on the predicted samples.

公开(公告)号：US11451785B2

公开(公告)日：2022-09-20

申请号：US17674595

申请日：2022-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Jungah Choi ,  Jin Heo ,  Sunmi Yoo ,  Jaehyun Lim ,  Jangwon Choi ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/70 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46

Abstract: A method for performing video decoding by a decoding device according to the present document comprises the steps of: acquiring residual information of a current block; deriving residual samples of the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US20220232214A1

公开(公告)日：2022-07-21

申请号：US17675716

申请日：2022-02-18

Applicant: LG ELECTRONICS INC.

Inventor： Jungah CHOI ,  Jin Heo ,  Sunmi Yoo ,  Jaehyun Lim ,  Jangwon Choi ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/18 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46

Abstract: An image decoding method carried out by a decoding apparatus according to the present document comprises the steps of: acquiring, via a bitstream, image data comprising residual data, and prediction mode data for the current block; deriving the prediction mode of the current block on the basis of the prediction mode data; deriving prediction samples for the current block on the basis of the prediction mode; deriving residual samples for the current block on the basis of the residual data; and generating reconstructed samples for the current block on the basis of the prediction samples and residual samples.

公开(公告)号：US20220124370A1

公开(公告)日：2022-04-21

申请号：US17562227

申请日：2021-12-27

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Sunmi Yoo ,  Jin Heo ,  Jangwon Choi ,  Ling Li ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/60 ,  H04N19/132 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: A video decoding method performed by a decoding apparatus according to the present document comprises the steps of: receiving a bit stream including residual information of a current block; deriving a specific number of the number of context encoding bins for context syntax elements for a current sub-block of the current block; decoding the context syntax elements for the current sub-block included in the residual information on the basis of the specific number; deriving transform coefficients for the current sub-block on the basis of the decoded context syntax elements; deriving residual samples for the current block on the basis of the transform coefficients; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US11245904B2

公开(公告)日：2022-02-08

申请号：US17217739

申请日：2021-03-30

Applicant: LG ELECTRONICS INC.

Inventor： Jungah Choi ,  Sunmi Yoo ,  Seunghwan Kim ,  Jangwon Choi ,  Jin Heo

IPC: H04N19/60 ,  H04N19/124 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/184 ,  H04N19/70

Abstract: A method by which a decoding device decodes an image includes the steps of: receiving a bitstream including residual information; deriving a residual sample for the current block on the basis of a quantized transform coefficient; and generating a reconstructed picture on the basis of the residual sample for the current block, where the residual information includes a context-based coded context syntax element, where the deriving the quantized transform coefficient decodes the context syntax element based on a context and based on a predetermined maximum value for the context syntax element, and where the maximum value is determined by a unit of a transform block.

公开(公告)号：US20210321135A1

公开(公告)日：2021-10-14

申请号：US17357051

申请日：2021-06-24

Applicant: LG Electronics Inc.

Inventor： Sunmi Yoo ,  Jungah Choi ,  Seunghwan Kim ,  Jin Heo ,  Junghak Nam ,  Jangwon Choi

IPC: H04N19/61 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159

Abstract: An image decoding method according to the present document comprises the steps of: acquiring prediction mode information and residual related information from a bitstream; deriving, on the basis of the prediction mode information, prediction samples of a current block by performing prediction; deriving residual samples of the current block on the basis of the residual related information; and generating restoration samples of the current block on the basis of the prediction samples and the residual samples, and determines whether the residual related information includes a transform skip flag on the basis of whether the current block is a luminance component block or a chrominance component block, wherein the transform skip flag represents whether a transform skip is applied to the current block.

公开(公告)号：US20210168370A1

公开(公告)日：2021-06-03

申请号：US17169899

申请日：2021-02-08

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Jin Heo ,  Ling Li ,  Jangwon Choi ,  Jungah Choi ,  Seunghwan Kim

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/124 ,  H04N19/60 ,  H04N19/136

Abstract: An image decoding method includes receiving residual information including first size related information for a first residual coefficient and second size related information for a second residual coefficient, setting a Rice parameter of the first size related information and the second size related information as a specific value, deriving available binary values based on the Rice parameter, deriving binary values of the first size related information and the second size related information by decoding the first size related information and the second size related information, deriving values of the first size related information and the second size related information by comparing the binary values and the available binary values, deriving the first residual coefficient and the second residual coefficient based on the values, and reconstructing a current picture based on the first residual coefficient and the second residual coefficient.

公开(公告)号：US20210136418A1

公开(公告)日：2021-05-06

申请号：US17148970

申请日：2021-01-14

Applicant: LG ELECTRONICS INC

Inventor： Jungah Choi ,  Sunmi Yoo ,  Jin Heo ,  Ling Li ,  Jangwon Choi ,  Seunghwan Kim

IPC: H04N19/64 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure includes receiving a bitstream including residual information; deriving quantized transform coefficients for a current block based on the residual information included in the bitstream; deriving residual samples for the current block based on the quantized transform coefficients; and generating a reconstructed picture based on the residual samples for the current block.

公开(公告)号：US10951908B2

公开(公告)日：2021-03-16

申请号：US16615329

申请日：2017-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Jaehyun Lim ,  Jin Heo

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/11 ,  H04N19/182

Abstract: According to the present disclosure, an image decoding method performed by a decoding device comprises the steps of: deriving a first intra prediction mode of a current block; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving a second intra prediction mode of a target sample on the basis of a location of the target sample and the first intra prediction mode of the current block; and performing prediction for the target sample on the basis of the second intra prediction mode of the target sample.

公开(公告)号：US10951898B2

公开(公告)日：2021-03-16

申请号：US16709471

申请日：2019-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Jin Heo ,  Ling Li ,  Jangwon Choi ,  Jungah Choi ,  Seunghwan Kim

IPC: H04N19/176 ,  H04N19/13 ,  H04N19/60 ,  H04N19/124 ,  H04N19/136

Abstract: An image decoding method includes receiving residual information including first size related information for a first residual coefficient and second size related information for a second residual coefficient, setting a Rice parameter of the first size related information and the second size related information as a specific value, deriving available binary values based on the Rice parameter, deriving binary values of the first size related information and the second size related information by decoding the first size related information and the second size related information, deriving values of the first size related information and the second size related information by comparing the binary values and the available binary values, deriving the first residual coefficient and the second residual coefficient based on the values, and reconstructing a current picture based on the first residual coefficient and the second residual coefficient.