US 12,126,822 B2
Most probable mode (mpm) list sorting
Ling Li, Seoul (KR); and Shan Liu, San Jose, CA (US)
Assigned to Tencent America LLC, Palo Alto, CA (US)
Filed by Tencent America LLC, Palo Alto, CA (US)
Filed on Aug. 16, 2022, as Appl. No. 17/888,558.
Claims priority of provisional application 63/286,979, filed on Dec. 7, 2021.
Prior Publication US 2023/0179784 A1, Jun. 8, 2023
Int. Cl. H04N 19/44 (2014.01); H04N 19/105 (2014.01); H04N 19/176 (2014.01); H04N 19/88 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/88 (2014.11)] 13 Claims
OG exemplary drawing
 
1. A method of video decoding, the method comprising:
receiving coded information of a current block and neighboring blocks of the current block from a coded video bitstream;
generating a most probable mode (MPM) list for the current block, the MPM list including intra modes that are determined based on intra modes of the neighboring blocks of the current block;
calculating histogram of gradients (HoG) values of blocks in a neighboring template region of the current block;
sorting the intra modes of the MPM list based on the HoG values of the blocks in the neighboring template region in descending order such that an intra mode of a block in the neighboring template region having a highest HoG value is placed first in the MPM list, each of the intra modes in the MPM list being associated with a respective one of the HoG values; and
reconstructing the current block based on the MPM list.