公开(公告)号：US20220272349A1

公开(公告)日：2022-08-25

申请号：US17736610

申请日：2022-05-04

Applicant: LG ELECTRONICS INC.

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

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

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：US20220256174A1

公开(公告)日：2022-08-11

申请号：US17615743

申请日：2020-06-03

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/184

Abstract: According to the disclosure of the present document, a linear reshaper is used for LMCS and a single chroma residual scaling factor, which is directly signaled during chroma scaling of the LMCS, can be used. In addition, the number of flexible bins can be used for luma mapping so that the resource/cost (of software or hardware) required for an LMCS procedure is minimized, and the latency of coding is removed so that the LMCS procedure can be efficiently performed.

公开(公告)号：US20220201278A1

公开(公告)日：2022-06-23

申请号：US17679570

申请日：2022-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/103 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/12 ,  H04N19/186 ,  H04N19/136 ,  H04N19/157

Abstract: According to the disclosure of the present document, a quantization parameter for a quantized escape value in a palette mode can be derived on the basis of minimum quantization parameter information about a conversion skip mode to perform a scaling process on the quantized escape value. Therethrough, the data amount that is required to be signaled for palette mode coding can be reduced, and the efficiency of escape coding in the palette mode can be enhanced.

公开(公告)号：US20220132149A1

公开(公告)日：2022-04-28

申请号：US17570857

申请日：2022-01-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

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

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：US20220132110A1

公开(公告)日：2022-04-28

申请号：US17441617

申请日：2020-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Jaehyun LIM ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/117 ,  H04N19/18 ,  H04N19/169 ,  H04N19/70 ,  H04N19/186 ,  H04N19/174 ,  H04N19/172 ,  H04N19/82 ,  H04N19/176 ,  H04N19/61 ,  H04N19/132

Abstract: According to the disclosure of the present document, LMCS data and/or an ALF parameter can be signaled on the basis of type information from a parameter set. A default LMCS model comprised in the parameter set can be selectively used for an LMCS procedure. Therefore, the amount of data to be signaled for video/image coding is reduced and coding efficiency can be increased.

公开(公告)号：US20220116614A1

公开(公告)日：2022-04-14

申请号：US17556551

申请日：2021-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/186 ,  H04N19/109

Abstract: 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：US20220103848A1

公开(公告)日：2022-03-31

申请号：US17546499

申请日：2021-12-09

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

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

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：US20210392333A1

公开(公告)日：2021-12-16

申请号：US17400883

申请日：2021-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

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

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.