US 12,382,021 B2
Intra prediction method on basis of MPM list and apparatus therefor
Ling Li, Seoul (KR); Jaehyun Lim, Seoul (KR); Jin Heo, Seoul (KR); Jangwon Choi, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Apr. 10, 2024, as Appl. No. 18/632,155.
Application 18/632,155 is a continuation of application No. 17/442,912, granted, now 11,997,256, previously published as PCT/KR2020/003920, filed on Mar. 23, 2020.
Claims priority of provisional application 62/823,720, filed on Mar. 26, 2019.
Prior Publication US 2024/0357077 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)] 14 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, comprising:
obtaining most probable mode (MPM) flag information related to whether an intra prediction mode for a current block is derived based on MPM candidates for the current block and multi-reference line (MRL) index information for at least one reference sample line for intra prediction of the current block from a bitstream;
deriving the intra prediction mode for the current block based on the MPM flag information and the MRL index information;
deriving prediction samples for the current block based on the intra prediction mode for the current block; and
generating a reconstructed picture based on the prediction samples,
wherein based on a value of the MRL index information being equal to 0, the MPM flag information is obtained from the bitstream,
wherein based on a value of the MPM flag information being equal to 1 and the value of the MRL index information being equal to 0, planar flag information indicating whether the intra prediction mode for the current block is a planar mode is obtained from the bitstream, and
wherein the intra prediction mode of the current block is derived based on a value of the planar flag information.