US 12,120,317 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 Oct. 31, 2023, as Appl. No. 18/385,758.
Application 18/385,758 is a continuation of application No. 18/094,732, filed on Jan. 9, 2023, granted, now 11,843,786.
Application 18/094,732 is a continuation of application No. 17/527,951, filed on Nov. 16, 2021, granted, now 11,589,057, issued on Feb. 21, 2023.
Application 17/527,951 is a continuation of application No. PCT/KR2020/007221, filed on Jun. 3, 2020.
Claims priority of provisional application 62/856,715, filed on Jun. 3, 2019.
Prior Publication US 2024/0064310 A1, Feb. 22, 2024
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 19/593 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/593 (2014.11); H04N 19/70 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, the method comprising:
receiving a bitstream;
receiving residual information, from the bitstream;
receiving second flag information related to whether an intra prediction type for a current block is matrix-based intra prediction (MIP) based on first flag information related to whether the MIP is enabled, wherein the first flag information is equal to 1 indicating that the MIP is enabled;
receiving MIP mode information based on the second flag information, wherein the second flag information is equal to 1 indicating that the intra prediction type for the current block is the MIP;
generating intra prediction samples for the current block based on the MIP mode information;
deriving transform coefficients based on the residual information;
generating residual samples based on the transform coefficients; and
generating reconstructed samples for the current block based on the intra prediction samples and the residual samples,
wherein the MIP mode information is MIP mode index information indicating an MIP mode applied to the current block, wherein the MIP mode index information is used to derive an MIP matrix for the current block,
wherein the intra prediction samples are generated using the MIP matrix derived from the MIP mode index information,
wherein a syntax element bin string for the MIP mode information is binarized by a TB (truncated binarization) method, and
wherein a maximum length of the syntax element bin string is determined by a size of the current block.