公开(公告)号：US11425401B2

公开(公告)日：2022-08-23

申请号：US17570857

申请日：2022-01-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/30 ,  H04N19/18 ,  H04N19/124 ,  H04N19/70 ,  H04N19/132 ,  H04N19/174 ,  H04N19/176

Abstract: According to the disclosure of the present document, scaling list data transferred from an adaptation parameter set (APS) can be signaled through a hierarchical structure, and restrictions are placed on the scaling list data transferred from the APS, whereby the amount of data to be signaled for video/image coding can be reduced, and easiness in implementation can be provided.

公开(公告)号：US20220124338A1

公开(公告)日：2022-04-21

申请号：US17432830

申请日：2020-02-26

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/30 ,  H04N19/169 ,  H04N19/186 ,  H04N19/176

Abstract: According to embodiment(s) disclosed in the present document, a reshaper model used in coding including LMCS can modify a value of a delta codeword on the basis of luma bit depth and perform reshaping on the basis of determination on whether or not a reshaper is linear, and thus, signaling overhead at a higher bit depth and overhead for signaling values of delta codewords for all bins can be reduced.

公开(公告)号：US20210400257A1

公开(公告)日：2021-12-23

申请号：US17352901

申请日：2021-06-21

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seung Hwan Kim ,  Hendry Hendry

IPC: H04N19/103 ,  H04N19/186 ,  H04N19/136

Abstract: An image encoding/decoding method and apparatus for signaling an ACT or LMCS tool based on a color space and a method of transmitting a bitstream are provided. An image decoding may include determining a color space of a current image, determining whether to enable a predetermined decoding tool based on the color space, and decoding the current image depending on whether to enable the predetermined decoding tool.

公开(公告)号：US12231671B2

公开(公告)日：2025-02-18

申请号：US18380071

申请日：2023-10-13

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.

公开(公告)号：US12225190B2

公开(公告)日：2025-02-11

申请号：US18532578

申请日：2023-12-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/105 ,  H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70 ,  H04N19/82

Abstract: According to the disclosure of the present document, scaling list data transmitted from an adaptation parameter set (APS) can be signaled through a hierarchical structure. In addition, by setting a limit on the scaling list data transmitted from the APS, it is possible to reduce the amount of data which has to be signaled for video/image coding, and facilitate implementation.

公开(公告)号：US12206866B2

公开(公告)日：2025-01-21

申请号：US17909943

申请日：2021-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/46 ,  H04N19/96

Abstract: According to a disclosure of the present document, information/parameter related to splitting of a picture can be signaled on the basis of a no-picture partition flag, information related to a tile, and information related to a slice, unnecessary redundant signaling can be removed accordingly, and the number of bits assigned to the signaling can be reduced, thereby deriving an effect of increasing an overall coding efficiency.

公开(公告)号：US12192470B2

公开(公告)日：2025-01-07

申请号：US18381446

申请日：2023-10-18

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46

Abstract: A video decoding method performed by a video decoding device according to the present document comprises the steps of: acquiring image information from a bitstream, the image information including a picture header associated with 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 for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and generating prediction samples by performing at least one of intra-prediction or inter-prediction for the slices in the current picture on the basis of the first flag or the second flag.

公开(公告)号：US20240414325A1

公开(公告)日：2024-12-12

申请号：US18812623

申请日：2024-08-22

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: According to the disclosure of this document, it is possible to signal information related to a chroma quantization parameter offset through a palette coding syntax, and to efficiently parse and signal index information for a chroma quantization parameter offset list on the basis of information about the number of entries in the chroma quantization parameter offset list. Accordingly, bits that need to be signaled for video/image coding can be reduced, and coding efficiency can be improved.

公开(公告)号：US12120299B2

公开(公告)日：2024-10-15

申请号：US17795071

申请日：2021-01-25

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: According to the disclosure of this document, it is possible to derive a residual sample by applying an adaptive color transform (ACT) to a current block on the basis of ACT-related information, and at this time, the residual sample is clipped and derived on the basis of a clipping range, wherein the clipping range is determined on the basis of a bit depth.

公开(公告)号：US12113992B2

公开(公告)日：2024-10-08

申请号：US18135291

申请日：2023-04-17

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/30 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

CPC classification number: H04N19/30 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: According to the disclosure of the present document, scaling list data transferred from an adaptation parameter set (APS) can be signaled through a hierarchical structure, and restrictions are placed on the scaling list data transferred from the APS, whereby the amount of data to be signaled for video/image coding can be reduced, and easiness in implementation can be provided.