US 12,231,624 B2
Planar intra-prediction using position dependent prediction combination
Alexey Konstantinovich Filippov, Moscow (RU); Vasily Alexeevich Rufitskiy, Moscow (RU); and Jianle Chen, San Diego, CA (US)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by Huawei Technologies Co., Ltd., Guangdong (CN)
Filed on Dec. 5, 2022, as Appl. No. 18/075,225.
Application 18/075,225 is a continuation of application No. 17/328,352, filed on May 24, 2021, granted, now 11,553,174.
Application 17/328,352 is a continuation of application No. PCT/RU2019/050227, filed on Nov. 26, 2019.
Claims priority of provisional application 62/771,451, filed on Nov. 26, 2018.
Prior Publication US 2023/0107125 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A coding device, comprising:
one or more processors; and
a non-transitory computer-readable medium in communication with the one or more processors to store program code, which when executed by the one or more processors, causes the coding device to:
for a sample of a block of a picture:
acquire one or more reference sample values from neighboring blocks of the block;
obtain a predicted sample value of the block from the one or more reference sample values by performing intra prediction using a PLANAR intra prediction mode;
multiply the predicted sample value by a sample weighting factor to produce a weighted predicted sample value; and
obtain a modified predicted sample value by performing an arithmetic right shift on a sum of an additional value and the weighted predicted sample value;
wherein the sample weighting factor is ((2<<p)−wL−wT) or (64−wL−wT),
wherein
p is a parameter of the sample weighting factor,
wL is a horizontal weighting factor, and
wT is a vertical weighting factor.