公开(公告)号：US11503343B2

公开(公告)日：2022-11-15

申请号：US17570854

申请日：2022-01-07

申请人： LG Electronics Inc.

发明人： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/70 ,  H04N19/18 ,  H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  H04N19/132 ,  H04N19/174 ,  H04N19/172

摘要： According to the disclosure of the present document, scaling list data delivered in an adaptation parameter set (APS) may be signaled through a hierarchical structure, and the amount of data that needs to be signaled for video/image coding may be reduced and implementation may be facilitated by placing limits on the scaling list data delivered in the APS.

公开(公告)号：US11431992B2

公开(公告)日：2022-08-30

申请号：US17561409

申请日：2021-12-23

申请人： LG ELECTRONICS INC.

发明人： Jie Zhao ,  Seunghwan Kim

IPC分类号： H04N19/186 ,  H04N19/109 ,  H04N19/96 ,  H04N19/172 ,  H04N19/159

摘要： According to a disclosure of the present document, image information including prediction mode information and information associated with luma mapping with chroma scaling (LMCS) is acquired from a bitstream, wherein the image information includes LMCS adaptation parameter sets (APSs), and by limiting the range of APS ID information included in the LMCS APSs, a memory used in a LMCS procedure may be reduced (limited).

公开(公告)号：US11412239B2

公开(公告)日：2022-08-09

申请号：US17559130

申请日：2021-12-22

申请人： LG Electronics Inc.

发明人： Jie Zhao ,  Seunghwan Kim

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

摘要： 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：US20220182620A1

公开(公告)日：2022-06-09

申请号：US17600012

申请日：2020-03-19

申请人： LG ELECTRONICS INC.

发明人： Seethal Paluri ,  Jaehyun Lim ,  Seunghwan Kim ,  Jie Zhao

IPC分类号： H04N19/117 ,  H04N19/176 ,  H04N19/184

摘要： According to the disclosure of the present document, ALF parameters and/or LMCS parameters may be hierarchically signaled, thereby enabling a reduction in data volume to be signaled for video/image coding and an increase in coding efficiency.

公开(公告)号：US11606558B2

公开(公告)日：2023-03-14

申请号：US17731031

申请日：2022-04-27

申请人： LG ELECTRONICS INC.

发明人： Jie Zhao ,  Seung Hwan Kim ,  Hendry Hendry ,  Seethal Paluri

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

摘要： Provided are an image encoding/decoding method and device. An image decoding method performed by an image decoding device according to the present disclosure includes the steps of: determining a quantization parameter of the current block on the basis of whether color space conversion is applied to a residual sample of the current block; determining a transform coefficient of the current block on the basis of the quantization parameter; determining the residual sample of the current block by using the transform coefficient; and resetting the value of the residual sample on the basis of whether the color space conversion is applied.

公开(公告)号：US11496742B2

公开(公告)日：2022-11-08

申请号：US17556551

申请日：2021-12-20

申请人： LG ELECTRONICS INC.

发明人： Jie Zhao ,  Seunghwan Kim

IPC分类号： H04N19/00 ,  H04N19/132 ,  H04N19/109 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

摘要： According to disclosure of the present document, an LMCS procedure can be used for blocks having various block tree structures, and memories used in the LMCS procedure can be reduced (limited).

公开(公告)号：US20220329782A1

公开(公告)日：2022-10-13

申请号：US17843468

申请日：2022-06-17

申请人： LG ELECTRONICS INC.

发明人： Seethal PALURI ,  Hendry HENDRY ,  Seunghwan Kim ,  Jie Zhao

IPC分类号： H04N19/105 ,  H04N19/70 ,  H04N19/132 ,  H04N19/176 ,  H04N19/172 ,  H04N19/51 ,  H04N19/174 ,  H04N19/137 ,  H04N19/159

摘要： A video decoding method performed by a video decoding apparatus according to the present document may comprise the steps of: parsing a prediction weighted table syntax from a bitstream; parsing number information about weighted reference pictures in a reference picture list from the prediction weighted table syntax; deriving a weighting factor-related flag about the reference picture list on the basis of the number information; performing weighted prediction on a current block on the basis of the weighting factor-related flag so as to derive prediction samples of the current block; generating residual samples on the basis of residual information obtained from the bitstream; and reconstructing a current picture on the basis of the prediction samples and the residual samples, wherein the prediction weighted table syntax is parsed from a picture header of the bitstream.

公开(公告)号：US20220295105A1

公开(公告)日：2022-09-15

申请号：US17639129

申请日：2020-08-31

申请人： LG ELECTRONICS INC.

发明人： SUNMI YOO ,  Junghak Nam ,  Seunghwan Kim ,  Jie Zhao

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

摘要： 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：US11425401B2

公开(公告)日：2022-08-23

申请号：US17570857

申请日：2022-01-07

申请人： LG Electronics Inc.

发明人： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

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

摘要： 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

申请人： LG ELECTRONICS INC.

发明人： Jie Zhao ,  Seunghwan Kim

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

摘要： 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.