公开(公告)号：US12267485B2

公开(公告)日：2025-04-01

申请号：US18382246

申请日：2023-10-20

Applicant: LG Electronics Inc.

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

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/503 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: parsing, from a bitstream, flags associated with weighted prediction; parsing a prediction weighted table syntax from a picture header of the bitstream on the basis of the flags; generating prediction samples regarding a current block in a current picture on the basis of syntax elements in the prediction weighted table syntax; and generating reconstructed samples on the basis of the prediction samples, wherein the flags comprise a first flag associated with whether the weighted prediction is applied to slices referring to a picture parameter set of the bitstream, and a second flag associated with whether information related to the weighted prediction is present in the picture header, and the second flag may be parsed from the picture parameter set on the basis of the first flag.

公开(公告)号：US12225216B2

公开(公告)日：2025-02-11

申请号：US18662881

申请日：2024-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/70

Abstract: According to the disclosure of the present document, chroma quantization parameter offset-related information can be signaled through palette syntax coding, and index information for a chroma quantization parameter offset list can be efficiently parsed/signaled on the basis of information about the number of entries in the chroma quantization parameter offset list. Accordingly, bits that are required to be signaled in order to code a video/image can be reduced, and the coding efficiency can be enhanced.

公开(公告)号：US12225201B2

公开(公告)日：2025-02-11

申请号：US17617279

申请日：2020-06-11

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seunghwan Kim

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

Abstract: According to the disclosure of this document, in subblock-based temporal motion vector prediction (sbTMVP), base motion information for a subblock for which a motion vector is not available can be efficiently derived, and through this, video/image coding efficiency can be improved.

公开(公告)号：US12192489B2

公开(公告)日：2025-01-07

申请号：US18368935

申请日：2023-09-15

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/70

Abstract: According to the disclosure of the present document, an ID value of an LMCS APS may be within a predetermined range. Thus, an LMCS procedure can be efficiently performed, and the complexity of LMCS is reduced. Since the performance of LMCS is improved, efficiency of video/image coding may increase.

公开(公告)号：US12177485B2

公开(公告)日：2024-12-24

申请号：US17639129

申请日：2020-08-31

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi Yoo ,  Junghak Nam ,  Seunghwan Kim ,  Jie Zhao

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

Abstract: According to the disclosure of the present document, an escape value may be effectively binarized on the basis of a maximum value of an escape value, which may be inferred by a quantization parameter in a palette mode. Accordingly, in a palette mode, the length of a bin may be adjusted or the number bits may be saved, according to a maximum value of an escape value, whereby coding efficiency may be improved.

公开(公告)号：US12167002B2

公开(公告)日：2024-12-10

申请号：US18209140

申请日：2023-06-13

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96 ,  H04N19/117

Abstract: According to the disclosure of the present document, the resources necessary for an LMCS process may be reduced by limiting the range that an LMCS APS occupies in all APSs. Thus, the degree of complexity in LMCS may be reduced, and video/image coding efficiency may be increased.

公开(公告)号：US12101493B2

公开(公告)日：2024-09-24

申请号：US17795137

申请日：2021-01-25

Applicant: LG Electronics Inc.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/198 ,  H04N19/176 ,  H04N19/186

Abstract: According to the disclosure of the present document, a residual sample can be derived by applying adaptive color transform (ACT) with respect to a current block on the basis of ACT-associated information, wherein the residual sample is derived by being clipped on the basis of a clipping boundary, wherein the clipping boundary is determined on the basis of a bit depth.

公开(公告)号：US12095982B2

公开(公告)日：2024-09-17

申请号：US17774101

申请日：2020-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

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

CPC classification number: 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：US12069272B2

公开(公告)日：2024-08-20

申请号：US18374401

申请日：2023-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Jie Zhao ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

Abstract: According to the disclosure of the present document, it is possible for various LMCS application cases to apply an LMCS procedure to a block having a dual tree structure. In addition, the coding performance of the block can be improved. According to the disclosure of the present document, resources required for the LMCS procedure can be reduced. Therefore, the complexity of the LMCS can be reduced and the video/image coding efficiency can be increased.

公开(公告)号：US12069270B2

公开(公告)日：2024-08-20

申请号：US18227134

申请日：2023-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/169 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/188 ,  H04N19/46 ,  H04N19/82

Abstract: According to the present disclosure, ALF parameters and/or LMCS parameters can be hierarchically signaled, which enables a reduction in the amount of data to be signaled for video/image coding and an increase in the coding efficiency.