US 12,219,130 B2
Image/video coding method based on intra prediction involving parsing of MPM index, and apparatus thereof
Jin Heo, Seoul (KR); Sunmi Yoo, Seoul (KR); Ling Li, Seoul (KR); and Jangwon Choi, Seoul (KR)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on May 25, 2023, as Appl. No. 18/202,004.
Application 18/202,004 is a continuation of application No. 16/982,411, granted, now 11,706,405, previously published as PCT/KR2019/003534, filed on Mar. 27, 2019.
Claims priority of provisional application 62/655,773, filed on Apr. 10, 2018.
Claims priority of application No. 10-2018-0037749 (KR), filed on Mar. 30, 2018.
Prior Publication US 2023/0308637 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/11 (2014.01); H04N 19/119 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/46 (2014.01); H04N 19/593 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/11 (2014.11); H04N 19/119 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/46 (2014.11); H04N 19/593 (2014.11); H04N 19/70 (2014.11)] 3 Claims
OG exemplary drawing
 
1. A decoding apparatus for an image decoding, the decoding apparatus comprising:
a memory; and
at least one processor connected to the memory, the at least one processor configured to:
acquire information about an intra prediction type of a current block from a bitstream;
derive an intra prediction type of the current block as a specific intra prediction type based on the information about the intra prediction type;
acquire information about an intra prediction mode of the current block from the bitstream;
configure a most probable mode (MPM) list comprising candidate intra prediction modes for the current block based on neighboring blocks of the current block;
derive an intra prediction mode of the current block based on the MPM list and the information about the intra prediction mode;
generate a predicted block of the current block by performing intra prediction based on the specific intra prediction type and the derived intra prediction mode;
generate a reconstructed picture based on the predicted block derived based on the specific intra prediction type and the derived intra prediction mode; and
generate a modified reconstructed picture by performing filtering on the reconstructed picture,
wherein for the specific intra prediction type, the intra prediction is performed based on neighboring reference samples in a specific sample line which is not adjacent to a top boundary and a left boundary of the current block,
wherein based on the intra prediction type representing the specific intra prediction type, the information about the intra prediction mode comprises: an MPM index information,
wherein based on the intra prediction type representing the specific intra prediction type, the MPM index information is parsed without parsing an MPM flag information from the bitstream, and
wherein for generating the predicted block based on the specific intra prediction type and the derived intra prediction mode, neighboring reference samples used for a case that a height of the current block is greater than a width of the current block and neighboring reference samples used for a case that the width of the current block is greater than the height of the current block are different.