US 12,445,651 B2
Residual sign prediction of transform coefficients in video coding
Jie Chen, Beijing (CN); Mohammad Golam Sarwer, Cupertino, CA (US); Yan Ye, San Diego, CA (US); Ru-Ling Liao, Beijing (CN); and Xinwei Li, Beijing (CN)
Assigned to Alibaba Innovation Private Limited, Singapore (SG)
Filed by Alibaba Innovation Private Limited, Singapore (SG)
Filed on Sep. 29, 2022, as Appl. No. 17/956,752.
Claims priority of provisional application 63/296,370, filed on Jan. 4, 2022.
Claims priority of provisional application 63/250,202, filed on Sep. 29, 2021.
Prior Publication US 2023/0093994 A1, Mar. 30, 2023
Int. Cl. H04N 19/70 (2014.01); H04N 19/176 (2014.01); H04N 19/18 (2014.01); H04N 19/88 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/88 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for encoding a video sequence, the method comprising:
receiving a video sequence;
encoding the video sequence by:
predicting a plurality of transform coefficient signs of a current block corresponding to largest respective quantization indices of the transform coefficients of the current block in sorted order, wherein the plurality of transform coefficient signs are predicted up to a maximum allowable limit;
encoding residues of the predicted plurality of transform coefficient signs and the maximum allowable limit in a syntax structure of the current block.