US 11,785,221 B2
Encoding and decoding method, apparatus and communication system
Junyan Huo, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on May 3, 2022, as Appl. No. 17/661,859.
Application 17/661,859 is a continuation of application No. 17/228,558, filed on Apr. 12, 2021, granted, now 11,388,407.
Application 17/228,558 is a continuation of application No. PCT/CN2020/117911, filed on Sep. 25, 2020.
Claims priority of provisional application 62/911,166, filed on Oct. 4, 2019.
Prior Publication US 2022/0264100 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/119 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/132 (2014.11) [H04N 19/105 (2014.11); H04N 19/119 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for predicting an image, comprising:
determining prediction parameters of a current block in a bitstream;
determining a matrix-based intra prediction (MIP) input sample of the current block based on neighboring samples of the current block and the prediction parameters,
setting a shifting number parameter (sW) as a first fixed value, wherein the first fixed value is set independently of the prediction parameters, and the first fixed value is 6;
setting a shifting offset parameter (fO) as a second fixed value wherein the second fixed value is set independently from the first fixed value, and wherein the second fixed value is set independently of the prediction parameters, and the second fixed value is 32;
determining an MIP prediction sample (predMip[x][y]) of the current block based on an MIP weight matrix, the MIP input sample, the shifting offset parameter (fO), and the shifting number parameter (sW); and
performing an upsampling process to the MIP prediction sample of the current block so as to generate intra predicted samples (predSamples[x][y]) of the current block.