US 12,225,188 B2
Prediction method for decoding and apparatus, and computer storage medium
Junyan Huo, Guangdong (CN); Yanzhuo Ma, Guangdong (CN); Shuai Wan, Guangdong (CN); Fuzheng Yang, Guangdong (CN); and Xinwei Li, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Jun. 2, 2023, as Appl. No. 18/328,705.
Application 18/328,705 is a continuation of application No. 17/677,810, filed on Feb. 22, 2022, granted, now 11,785,208.
Application 17/677,810 is a continuation of application No. 17/234,639, filed on Apr. 19, 2021, granted, now 11,297,313, issued on Apr. 5, 2022.
Application 17/234,639 is a continuation of application No. PCT/CN2018/123657, filed on Dec. 25, 2018.
Prior Publication US 2023/0308643 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/176 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A prediction method for encoding, comprising:
acquiring reference samples adjacent to at least one side of a coding block;
determining a reference point from the at least one side and determining reference sample positions corresponding to the at least one side according to a preset number of samples;
deriving reference samples corresponding to the reference sample positions from the reference samples; and
performing prediction on the coding block based on the derived reference samples, wherein the performing prediction comprises:
determining model parameters of a prediction model based on the derived reference samples, wherein the prediction model is configured to represent a prediction relationship between a first colour component and a second colour component corresponding to a sample in the coding block; and
performing prediction on the coding block based on the prediction model;
wherein determining the reference point from the at least one side and determining the reference sample positions corresponding to the at least one side according to the preset number of samples comprises:
calculating a first sampling interval based on the preset number of samples and a length of the at least one side; and
determining the reference point from the at least one side, and determining the reference sample positions corresponding to the at least one side according to the first sampling interval.