US 12,081,734 B2
Method and apparatus for coding/decoding picture data
Thierry Dumas, Rennes (FR); Franck Galpin, Thorigne-Fouillard (FR); Gagan Rath, Rennes (FR); and Fabrice Leleannec, Betton (FR)
Assigned to INTERDIGITAL CE PATENT HOLDINGS, SAS, Paris (FR)
Appl. No. 17/620,502
Filed by INTERDIGITAL CE PATENT HOLDINGS, SAS, Paris (FR)
PCT Filed Jun. 23, 2020, PCT No. PCT/EP2020/067411
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2020/260228, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 19305844.3 (EP), filed on Jun. 25, 2019.
Prior Publication US 2022/0360767 A1, Nov. 10, 2022
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 28 Claims
OG exemplary drawing
 
1. A device for encoding image data using a first intra prediction mode, the device including one or more processors configured for:
obtaining a set of averaged reference samples by averaging reference samples taken in a neighborhood of a current block of said image data;
weighting the averaged reference samples of the set of averaged referenced samples using a matrix of weights and applying a vector of biases to the weighted averaged reference samples to obtain an intermediate block of values, wherein the matrix of weights and the vector of biases are selected exclusively based on a size of the current block; and
obtaining a predictor for the current block by linearly interpolating the intermediate block of values.