公开(公告)号：US20240275957A1

公开(公告)日：2024-08-15

申请号：US18644829

申请日：2024-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jaeho LEE ,  Jangwon CHOI ,  Jungdong SEO ,  Jin HEO

IPC: H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A method by which a decoding device performs image decoding, according to the present invention, comprises the steps of: deriving an intra prediction mode of a current block; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving reference samples for prediction of a target sample among the neighboring samples on the basis of the position of the target sample of the current block and the prediction angle of the intra prediction mode; determining an interpolation filter for the target sample; and deriving the prediction sample of the target sample on the basis of the interpolation filter and the reference samples.

公开(公告)号：US20240179306A1

公开(公告)日：2024-05-30

申请号：US18432905

申请日：2024-02-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593

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

Abstract: Embodiments of the present specification provide a method and a device for processing a video signal for intra prediction. A method for decoding a video signal according an embodiment of the present disclosure includes: obtaining intra prediction information of a current block to which the intra prediction is applied, in which the intra prediction information includes a first flag indicating a predetermined first mode; determining an intra prediction mode of the current block based on the intra prediction information, wherein when the first flag corresponds to a first value, the first mode is determined as the intra prediction mode and when the first flag corresponds to a second value, one of a plurality of candidate modes is determined as the intra prediction mode; and generating a prediction sample of the current block based on the intra prediction mode and a reference sample in a current picture. A separate flag indicating whether to use a primarily used specific mode is used to reduce a data amount for transmission of the intra prediction mode and a processing time of information of the intra prediction.

公开(公告)号：US20240129460A1

公开(公告)日：2024-04-18

申请号：US18525025

申请日：2023-11-30

Applicant: LG ELECTRONICS INC.

Inventor： Jangwon CHOI ,  Jin HEO ,  Sunmi YOO ,  Jungah CHOI ,  Seung Hwan KIM

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include identifying a prediction mode of a current block, determining a candidate intra prediction mode for the current block, based on a prediction mode of a neighboring block located around the current block, based on the intra prediction mode of the current block being an intra prediction mode, generating a candidate intra prediction mode list of the current block based on the candidate intra prediction mode, and determine an intra prediction mode of the current block based on the candidate intra prediction mode list. In this case, the candidate intra prediction mode may be determined to be a predetermined intra prediction mode, based on the prediction mode of the neighboring block being an MIP mode.

公开(公告)号：US20240080480A1

公开(公告)日：2024-03-07

申请号：US17767388

申请日：2020-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Jungah CHOI ,  Jin HEO ,  Summi YOO ,  Jaehyun LIM ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70 ,  H04N19/91

CPC classification number: H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70 ,  H04N19/91

Abstract: A method by which a decoding device decodes a video, according to the present document, can comprise the steps of: acquiring, from a bitstream, information that indicates the level value of a transform coefficient in a current block; deriving, on the basis of whether the number of context coded bins maximally usable for the transform coefficient is greater than or equal to a threshold value, a rice parameter for the information that indicates the level value of the transform coefficient; deriving, on the basis of the rice parameter, a bin string for the information that indicates the level value of the transform coefficient; and deriving the level value of the transform coefficient on the basis of the bin string.

公开(公告)号：US20240031572A1

公开(公告)日：2024-01-25

申请号：US18375004

申请日：2023-09-29

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Sunmi YOO ,  Jin HEO ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/12 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/12 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining a dependent quantization available flag; obtaining a TSRC available flag, on the basis of the dependent quantization available flag; determining a residual coding syntax for a current block, on the basis of the TSRC available flag; obtaining residual information of the determined residual coding syntax for the current block; deriving a residual sample of the current block, on the basis of the residual information; and generating a reconstructed picture, on the basis of the residual sample, wherein the dependent quantization available flag is a flag regarding whether dependent quantization is available, the TSRC available flag is a flag regarding whether TSRC is available, and the TSRC available flag is obtained on the basis of the dependent quantization available flag having a value of 0.

公开(公告)号：US20230421760A1

公开(公告)日：2023-12-28

申请号：US18462894

申请日：2023-09-07

Applicant: LG Electronics Inc.

Inventor： Jangwon CHOI ,  Jungah CHOI ,  Jin HEO ,  Sunmi YOO

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/82 ,  H04N19/186 ,  H04N19/46 ,  H04N19/176

Abstract: According to a disclosure of the present document, information associated with a deblocking filter for performing deblocking filtering may include chroma component filter parameter information associated with deblocking parameter offsets that are applied to a chroma component. The chroma component filter parameter information may be selectively signaled on the basis of a chroma tool offset presence flag. Therefore, an effect of increasing overall coding efficiency may be derived by signaling chroma component filter parameter information only in the case of not a monochrome color format.

公开(公告)号：US20230308637A1

公开(公告)日：2023-09-28

申请号：US18202004

申请日：2023-05-25

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Sunmi YOO ,  Ling LI ,  Jangwon CHOI

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/11 ,  H04N19/119 ,  H04N19/593 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/11 ,  H04N19/119 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed is an image decoding method which includes obtaining, from a bitstream, information relating to the intra prediction type of a current block, information relating to the intra prediction mode of the current block, and residual information of the current block; performing intra prediction based on of the information relating to the intra prediction type and the information relating to the intra prediction mode; performing residual processing based on of the residual information; and reconstructing the current block based on of a result of the intra prediction and a result of the residual processing.

公开(公告)号：US20230209090A1

公开(公告)日：2023-06-29

申请号：US17802798

申请日：2021-02-25

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Jungah CHOI ,  Jin HEO ,  Jangwon CHOI

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/157 ,  H04N19/105 ,  H04N19/61 ,  H04N19/18

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/157 ,  H04N19/105 ,  H04N19/61 ,  H04N19/18

Abstract: An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring a sign data hiding available flag related to whether sign data hiding is available for the current slice; acquiring a TSRC available flag related to whether TSRC is available for a transform skip block of the current slice; and acquiring residual coding information about the current block within the current slice on the basis of the TSRC available flag, wherein the current block is the transform skip block within the current slice, and the TSRC available flag is acquired on the basis of the sign data hiding available flag.

公开(公告)号：US20230164361A1

公开(公告)日：2023-05-25

申请号：US17916474

申请日：2021-03-30

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Sunmi YOO ,  Junghak NAM ,  Jin HEO ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60 ,  H04N19/132 ,  H04N19/18

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60 ,  H04N19/132 ,  H04N19/18

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring prediction-related information about the current block; acquiring residual information about the current block; deriving a prediction sample of the current block on the basis of the prediction-related information; deriving a residual sample of the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the prediction sample and the residual sample.

公开(公告)号：US20230164343A1

公开(公告)日：2023-05-25

申请号：US17801714

申请日：2021-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Jungah CHOI ,  Sunmi YOO ,  Jaehyun LIM ,  Jin HEO ,  Jangwon CHOI ,  Seunghwan KIM

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

CPC classification number: H04N19/46 ,  H04N19/70 ,  H04N19/132 ,  H04N19/176

Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: obtaining a transform skip available flag; obtaining a TSRC available flag, on the basis of the transform skip available flag; determining a residual coding syntax for a current block, on the basis of the TSRC available flag; obtaining residual information of the determined residual coding syntax for the current block; deriving a residual sample of the current block, on the basis of the residual information; and generating a reconstructed picture, on the basis of the residual sample, wherein the transform skip available flag is a flag regarding whether transform skip is available, the TSRC available flag is a flag regarding whether TSRC is available, and the TSRC available flag is obtained on the basis of the transform skip available flag having a value of 1.