公开(公告)号：US11895338B2

公开(公告)日：2024-02-06

申请号：US18107844

申请日：2023-02-09

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/70 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/70 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61

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

公开(公告)号：US11838512B2

公开(公告)日：2023-12-05

申请号：US16855785

申请日：2020-04-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/129 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/60

CPC classification number: H04N19/132 ,  H04N19/129 ,  H04N19/176 ,  H04N19/46 ,  H04N19/60

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 transform coefficients for the current block from the quantized transform coefficients based on an inverse quantization process; deriving residual samples for the current block by applying inverse transform to the derived transform coefficients; and generating a reconstructed picture based on the residual samples for the current block.

公开(公告)号：US11770557B2

公开(公告)日：2023-09-26

申请号：US17749793

申请日：2022-05-20

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/11 ,  H04N19/593 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

Abstract: A video decoding method according to the present document comprises the steps of: configuring an MPM list by deriving candidate intra prediction modes on the basis of a first neighboring block located on the left side and a second neighboring block located on the upper side with respect to the current block; deriving an intra prediction mode for the current block on the basis of the MPM list; generating prediction samples for the current block on the basis of the intra prediction mode; and generating a reconstructed picture for the current block on the basis of the prediction samples, wherein a first intra prediction mode of the first neighboring block and a second intra prediction mode of the second neighboring block are the same, wherein the candidate intra prediction modes including a DC mode are derived on the basis of a case where both the first intra prediction mode and the second intra prediction mode are the DC mode.

公开(公告)号：US20230291893A1

公开(公告)日：2023-09-14

申请号：US18199191

申请日：2023-05-18

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 ,  H04N19/11 ,  H04N19/119 ,  H04N19/593

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70 ,  H04N19/11 ,  H04N19/119 ,  H04N19/593

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：US11671598B2

公开(公告)日：2023-06-06

申请号：US17312602

申请日：2019-12-31

Applicant: LG Electronics Inc.

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

IPC: H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: An image decoding method, which is performed by a decoding device according to the present document, is characterized by including: a step for receiving a bitstream including residual information about the current block; a step for deriving a maximum value of the number of context-encoding bins for context syntax elements coded on the basis of context included in the residual information; a step for entropy-decoding the context syntax elements on the basis of the maximum value; a step for deriving conversion coefficients for the current block on the basis of the entropy-decoded context syntax elements; a step for deriving a residual sample for the current block on the basis of the conversion coefficients; and a step for generating a reconstructed picture on the basis of the residual sample for the current block.

公开(公告)号：US20230089398A1

公开(公告)日：2023-03-23

申请号：US17977892

申请日：2022-10-31

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon Choi ,  Jin Heo ,  Sunmi Yoo ,  Jungah Choi ,  Seung Hwan Kim

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: An image encoding decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus includes determining a splitting structure of a current block composed of chroma components, determining a splitting type of the current block based on the splitting structure, obtaining a plurality of lower-layer blocks by splitting the current block based on the splitting type, and decoding the lower-layer blocks based on a prediction mode of the lower-layer blocks.

公开(公告)号：US11606579B2

公开(公告)日：2023-03-14

申请号：US17569337

申请日：2022-01-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/70 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61

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

公开(公告)号：US11595697B2

公开(公告)日：2023-02-28

申请号：US17682723

申请日：2022-02-28

Applicant: LG Electronics Inc.

Inventor： Junghak Nam ,  Jangwon Choi

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/18 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96 ,  H04N19/139

Abstract: According to one embodiment of the present document, filtering for chroma blocks can be performed on the basis of luma blocks. For example, a cross component adaptive loop filtering process can be performed. Therefore, the accuracy of in-loop filtering can be improved.

公开(公告)号：US11528482B2

公开(公告)日：2022-12-13

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：US11528480B2

公开(公告)日：2022-12-13

申请号：US17620586

申请日：2020-06-19

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon Choi ,  Jin Heo ,  Sunmi Yoo ,  Jungah Choi ,  Seung Hwan Kim

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  H04N19/186 ,  H04N19/103 ,  H04N19/593 ,  H04N19/174 ,  H04N19/503 ,  H04N19/96

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus includes determining a splitting structure of a current block composed of chroma components, determining a splitting type of the current block based on the splitting structure, obtaining a plurality of lower-layer blocks by splitting the current block based on the splitting type, and decoding the lower-layer blocks based on a prediction mode of the lower-layer blocks.