US 12,355,953 B2
Method and apparatus for intra prediction in video coding
Biao Wang, Shenzhen (CN); Semih Esenlik, Munich (DE); Anand Meher Kotra, Munich (DE); Han Gao, Shenzhen (CN); Jianle Chen, San Diego, CA (US); and Zhijie Zhao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Apr. 12, 2023, as Appl. No. 18/299,070.
Application 18/299,070 is a continuation of application No. 17/199,929, filed on Mar. 12, 2021, granted, now 11,647,182.
Application 17/199,929 is a continuation of application No. 17/002,741, filed on Aug. 25, 2020, granted, now 10,972,725, issued on Apr. 6, 2021.
Application 17/002,741 is a continuation of application No. PCT/CN2019/104254, filed on Sep. 3, 2019.
Claims priority of provisional application 62/726,419, filed on Sep. 3, 2018.
Prior Publication US 2023/0319266 A1, Oct. 5, 2023
Int. Cl. H04N 19/11 (2014.01); H04N 19/176 (2014.01); H04N 19/436 (2014.01); H04N 19/593 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/11 (2014.11) [H04N 19/176 (2014.11); H04N 19/436 (2014.11); H04N 19/593 (2014.11); H04N 19/70 (2014.11)] 9 Claims
OG exemplary drawing
 
1. A decoder, comprising:
one or more processors; and
a memory coupled to the one or more processors, wherein the memory comprises instructions, that when executed by the one or more processors, cause the decoder to perform following operations of:
determining a list of Most Probable Modes (MPMs) for a current block of a video frame encoded in a video bitstream, wherein when a condition is satisfied, the list of MPMs includes: a direct current (DC) mode, an intra prediction mode corresponding to a value of 50, an intra prediction corresponding to a value of 18, an intra prediction mode corresponding to a value of 46, and an intra prediction mode corresponding to a value of 54, and wherein a quantity of intra prediction modes in the list of MPMs is less than or equal to 6;
obtaining an MPM flag for the current block from the video bitstream, wherein the MPM flag indicates whether an intra prediction mode for the current block is in the list of MPMs for the current block;
obtaining an MPM index for the current block from the video bitstream, when the MPM flag indicates that the intra prediction mode for the current block is in the list of MPMs for the current block, wherein the MPM index is signaled based on truncated unary binarization;
determining the intra prediction mode for the current block based on the MPM index and the list of MPMs for the current block; and
reconstructing the current block using reference samples determined based on the intra prediction mode for the current block.