US 12,323,614 B2
Image coding/decoding method, coder, decoder, and storage medium
Junyan Huo, Guangdong (CN); Yanzhuo Ma, Guangdong (CN); Shuai Wan, Guangdong (CN); Wei Zhang, Guangdong (CN); Fuzheng Yang, Guangdong (CN); Haixin Wang, Guangdong (CN); and Yu Sun, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Dec. 1, 2023, as Appl. No. 18/527,169.
Application 18/527,169 is a continuation of application No. 17/463,146, filed on Aug. 31, 2021, granted, now 11,882,304.
Application 17/463,146 is a continuation of application No. 17/230,769, filed on Apr. 14, 2021, granted, now 11,159,814, issued on Oct. 26, 2021.
Application 17/230,769 is a continuation of application No. PCT/CN2019/107612, filed on Sep. 24, 2019.
Prior Publication US 2024/0107050 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/50 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/50 (2014.11) [H04N 19/176 (2014.11)] 12 Claims
OG exemplary drawing
 
1. A picture decoding method, applicable to a decoder, the method comprising:
decoding a bitstream to obtain a size, a coding mode, and residuals of a current block;
when the coding mode of the current block is a Matrix-based Intra Prediction (MIP) mode,
determining a value of a MIP block size index number corresponding to the current block according to the size of the current block;
determining a first offset for calculating a second offset;
calculating the second offset based on the MIP block size index number, the first offset and reconstructed values of adjacent pixels corresponding to the current block;
determining a first prediction value of the current block according to the second offset; and
determining a reconstructed value of the current block based on the first prediction value.