US 12,149,722 B2
PDPC unification
Liang Zhao, Sunnyvale, CA (US); Xin Zhao, Santa Clara, CA (US); Xiang Li, Saratoga, CA (US); 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 Nov. 4, 2022, as Appl. No. 17/981,165.
Application 17/981,165 is a continuation of application No. 17/243,009, filed on Apr. 28, 2021, granted, now 11,575,923.
Application 17/243,009 is a continuation of application No. 15/931,225, filed on May 13, 2020, granted, now 11,039,156, issued on Jun. 15, 2021.
Claims priority of provisional application 62/869,015, filed on Jun. 30, 2019.
Claims priority of provisional application 62/859,920, filed on Jun. 11, 2019.
Prior Publication US 2023/0199207 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/44 (2014.01); H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/105 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for video decoding in a decoder, comprising:
decoding prediction information for a current block in a current picture that is a part of a coded video sequence, the prediction information indicating an intra prediction direction for the current block that is one of (i) a diagonal intra prediction direction or (ii) a neighboring intra prediction direction adjacent to the diagonal intra prediction direction;
determining a usage of a position dependent prediction combination (PDPC) process according to the intra prediction direction of the current block, the same PDPC process being applied to both the diagonal intra prediction direction and the neighboring intra prediction direction; and
reconstructing, by circuitry, the current block based on the usage of the PDPC process on the current block, wherein
when the intra prediction direction is closer to a vertical intra prediction direction than a horizontal intra prediction direction, the PDPC process is performed on a first number of columns of samples in the current block, and
when the intra prediction direction is closer to the horizontal intra prediction direction than the vertical intra prediction direction, the PDPC process is performed on a second number of rows of samples in the current block.