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：US20230188758A1

公开(公告)日：2023-06-15

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：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.

公开(公告)号：US20230156197A1

公开(公告)日：2023-05-18

申请号：US18098489

申请日：2023-01-18

Applicant: LG Electronics Inc.

Inventor： Junghak NAM ,  Jangwon CHOI

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/46 ,  H04N19/80

CPC classification number: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/80

Abstract: According to an embodiment of the present document, a method for increasing the accuracy of in-loop filtering is proposed. In an example, the filtering accuracy of chroma blocks can be improved on the basis of luma blocks by performing a cross component adaptive loop filtering process.

公开(公告)号：US20230147003A1

公开(公告)日：2023-05-11

申请号：US18091933

申请日：2022-12-30

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：US20230093443A1

公开(公告)日：2023-03-23

申请号：US17797922

申请日：2021-02-05

Applicant: LG Electronics Inc.

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

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/18 ,  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 a dependent quantization available flag; and acquiring a transform skip residual coding (TSRC) available flag on the basis of the dependent quantization available flag.

公开(公告)号：US20230077137A1

公开(公告)日：2023-03-09

申请号：US17797849

申请日：2021-02-05

Applicant: LG ELECTRONICS INC.

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

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

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：US20230057415A1

公开(公告)日：2023-02-23

申请号：US17958882

申请日：2022-10-03

Applicant: LG Electronics Inc.

Inventor： Junghak NAM ,  Jangwon CHOI

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/186 ,  H04N19/169 ,  H04N19/46 ,  H04N19/80

Abstract: According to one embodiment of the present document, a cross component adaptive loop filtering (CCALF) process may be performed. The CCALF process can enhance the filtering performance for chroma components and improve the subjective/objective image quality of a picture.

公开(公告)号：US20230019471A1

公开(公告)日：2023-01-19

申请号：US17801492

申请日：2021-02-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/11 ,  H04N19/176 ,  H04N19/132 ,  H04N19/70 ,  H04N19/12 ,  H04N19/172

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring residual information about the 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.