公开(公告)号：US20230012751A1

公开(公告)日：2023-01-19

申请号：US17952898

申请日：2022-09-26

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seung Hwan KIM

IPC: H04N19/577 ,  H04N19/176 ,  H04N19/109 ,  H04N19/139 ,  H04N19/52 ,  H04N19/96 ,  H04N19/172

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method includes obtaining inter prediction information of a current block and wraparound information from a bitstream, and generating a prediction block of the current block based on the inter prediction information and the wraparound information. The wraparound information may include a first flag specifying whether wraparound motion compensation is enabled for a current video sequence including the current block. The first flag may have a first value specifying that the wraparound motion compensation is disabled, based on that one or more subpicture, which is coded independently and has a width different from a width of a current picture, is present in the current video sequence.

公开(公告)号：US20220417498A1

公开(公告)日：2022-12-29

申请号：US17780142

申请日：2020-12-07

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seunghwan KIM ,  Seethal PALURI

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176 ,  H04N19/46

Abstract: According to the disclosure of the present document, by signaling NAL unit-related information for a first picture and a collocated reference picture-related information for a second picture following the first picture in a decoding order, a collocated reference picture with respect to the second picture can be limited, and thus the image coding efficiency can be enhanced.

公开(公告)号：US20220408088A1

公开(公告)日：2022-12-22

申请号：US17629651

申请日：2020-08-20

Applicant: LG Electronics Inc.

Inventor： Jie ZHAO ,  Seunghwan KIM ,  Seethal PALURI

IPC: H04N19/124 ,  H04N19/186 ,  H04N19/176 ,  H04N19/169 ,  H04N19/132 ,  H04N19/70 ,  H04N19/18 ,  H04N19/60

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining CU chroma QP offset-related information for a current chroma block on the basis of the size and tree type of the current chroma block; deriving a chroma QP for the current chroma block on the basis of the CU chroma QP offset-related information; deriving residual samples for the current chroma block on the basis of the chroma QP; and generating a reconstructed picture on the basis of the residual samples, wherein the CU chroma QP offset-related information includes a CU chroma QP offset flag and a CU chroma QP offset index for the current chroma block.

公开(公告)号：US20220368917A1

公开(公告)日：2022-11-17

申请号：US17623367

申请日：2020-06-24

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/132 ,  H04N19/18 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: obtaining a flag indicating whether one chroma quantization parameter table is applied to chroma components; obtaining chroma quantization parameter data on the basis of the flag; deriving the chroma quantization parameter 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 quantization parameter table; deriving residual samples for the chroma components on the basis of the chroma quantization parameter; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US20220337849A1

公开(公告)日：2022-10-20

申请号：US17616935

申请日：2020-06-11

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/30 ,  H04N19/18 ,  H04N19/103 ,  H04N19/159 ,  H04N19/132 ,  H04N19/176 ,  H04N19/124 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data and scaling list-related information may be signaled hierarchically, thereby reducing the amount of data to be signaled for video/image coding and increasing coding efficiency.

公开(公告)号：US20220329840A1

公开(公告)日：2022-10-13

申请号：US17737795

申请日：2022-05-05

Applicant: LG ELECTRONICS INC

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/132 ,  H04N19/96 ,  H04N19/159 ,  H04N19/174

Abstract: A video decoding method can comprise the steps of: acquiring image information from a bitstream, the image information including a picture header related to a current picture, and the current picture including a plurality of slices; parsing, from the picture header, a first flag indicating whether information necessary for an inter prediction operation is in the picture header and/or a second flag indicating whether information necessary for an intra prediction operation is in the picture header; parsing, from the picture header, the information necessary for the inter prediction operation and/or the information necessary for the intra prediction operation based on the first flag and/or the second flag; and generating prediction samples based on the information necessary for the inter prediction operation and/or the information necessary for the intra prediction operation.

公开(公告)号：US20220329814A1

公开(公告)日：2022-10-13

申请号：US17731044

申请日：2022-04-27

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seung Hwan KIM ,  Hendry HENDRY ,  Seethal PALURI

IPC: H04N19/132 ,  H04N19/18 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70

Abstract: An image encoding/decoding method and apparatus are provided. The image decoding method performed by the image decoding apparatus, according to the present disclosure, comprises the steps of: determining a current block by splitting an image on the basis of split information acquired from a bitstream; determining a quantization parameter of the current block; and determining a transform coefficient of the current block on the basis of the quantization parameter.

公开(公告)号：US20220295063A1

公开(公告)日：2022-09-15

申请号：US17752396

申请日：2022-05-24

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/124 ,  H04N19/132 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus according to the present document comprises the steps of: obtaining a flag indicating whether quantization parameter data for combined chroma coding is present on the basis of a type of chroma; obtaining the quantization parameter data for the combined chroma coding on the basis of the flag; deriving a chroma quantization parameter table on the basis of the quantization parameter data; deriving a quantization parameter for the combined chroma coding on the basis of the chroma quantization parameter table; deriving residual samples on the basis of the quantization parameter; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US20220279201A1

公开(公告)日：2022-09-01

申请号：US17695383

申请日：2022-03-15

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seung Hwan Kim ,  Jie Zhao

IPC: H04N19/503 ,  H04N19/70 ,  H04N19/176 ,  H04N19/169

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise parsing weight information specifying a weight for a reference sample from a bitstream according to a weight parameter syntax structure, and decoding a current block by performing inter prediction based on the weight information. The parsing according to the weight parameter syntax structure may comprise obtaining weight number information specifying the number of weight information obtained from the bitstream according to the weight parameter syntax structure and obtaining weight information from the weight parameter syntax structure based on the weight number information.

公开(公告)号：US20220174295A1

公开(公告)日：2022-06-02

申请号：US17437188

申请日：2020-03-09

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/189 ,  H04N19/109 ,  H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/186

Abstract: According to the disclosure of the present document, reshaper data and/or ALF parameters can be signaled from a parameter set on the basis of type information, and thus the amount of data to be signaled for video/image coding can be reduced and coding efficiency can be increased.