US 11,792,411 B2
Matrix-based intra prediction device and method
Mehdi Salehifar, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jul. 12, 2022, as Appl. No. 17/863,074.
Application 17/863,074 is a continuation of application No. 17/526,930, filed on Nov. 15, 2021, granted, now 11,445,204.
Application 17/526,930 is a continuation of application No. PCT/KR2020/007219, filed on Jun. 3, 2020.
Claims priority of provisional application 62/856,720, filed on Jun. 3, 2019.
Prior Publication US 2022/0353514 A1, Nov. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/159 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/70 (2014.11)] 10 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, the method comprising:
obtaining image information including residual information and flag information related to whether matrix-based intra prediction (MIP) is used for a current block, from a bitstream;
obtaining matrix-based intra prediction (MIP) mode information based on the flag information;
generating intra prediction samples for the current block based on the MIP mode information;
generating residual samples for the current block based on the residual information; and
generating reconstructed samples for the current block based on the intra prediction samples and the residual samples,
wherein a syntax element bin string for the MIP mode information is binarized by a truncated binary (TB) binarization method,
wherein a maximum length of the syntax element bin string is set to different three values based on a size of the current block,
wherein the maximum length has a largest value based on a width and a height of the current block being 4,
wherein an MIP matrix is derived based on the MIP mode information, and
wherein the intra prediction samples are generated based on the MIP matrix,
wherein the MIP mode information is index information related to the MIP matrix applied to the current block.