US 12,348,770 B2
Encoder, a decoder and corresponding methods using intra mode coding for intra prediction
Biao Wang, Munich (DE); Semih Esenlik, Munich (DE); Anand Meher Kotra, Munich (DE); Han Gao, Munich (DE); and Jianle Chen, San Diego, CA (US)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Aug. 20, 2021, as Appl. No. 17/407,517.
Application 17/407,517 is a continuation of application No. PCT/CN2020/076193, filed on Feb. 21, 2020.
Claims priority of provisional application 62/810,323, filed on Feb. 25, 2019.
Prior Publication US 2021/0392373 A1, Dec. 16, 2021
Int. Cl. H04N 19/593 (2014.01); H04N 19/11 (2014.01); H04N 19/119 (2014.01); H04N 19/136 (2014.01); H04N 19/157 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/593 (2014.11) [H04N 19/11 (2014.11); H04N 19/136 (2014.11); H04N 19/157 (2014.11); H04N 19/176 (2014.11); H04N 19/119 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of prediction coding of a current block implemented by a decoding device or an encoding device, comprising:
obtaining an intra prediction mode of a left neighbor block of the current block;
obtaining an intra prediction mode of an above neighbor block of the current block; and
constructing a Most Probable Mode (MPM) list of intra prediction modes for the current block, the MPM list consisting 6 entries of intra prediction modes in the following order:
{ang, 2+((ang+61)%64), 2+((ang−1)%64), 2+((ang+60)%64), 2+((ang) %64)} when at least a first condition is fulfilled, wherein the first condition includes that the intra prediction mode of the left neighbor block and the intra prediction mode of the above neighbor block are the same angular mode, and wherein ang represents the intra prediction mode of the left neighbor block or the intra prediction mode of the above neighbor block.