US 12,219,163 B2
Chroma coding enhancement in cross-component sample adaptive offset
Che-Wei Kuo, Beijing (CN); Xiaoyu Xiu, Beijing (CN); Wei Chen, Beijing (CN); Xianglin Wang, Beijing (CN); Yi-Wen Chen, Beijing (CN); Tsung-Chuan Ma, Beijing (CN); Hong-Jheng Jhu, Beijing (CN); and Bing Yu, Beijing (CN)
Assigned to BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD., Beijing (CN)
Filed by BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Aug. 9, 2023, as Appl. No. 18/447,233.
Application 18/447,233 is a continuation of application No. 17/387,835, filed on Jul. 28, 2021, granted, now 11,800,124.
Claims priority of provisional application 63/057,303, filed on Jul. 28, 2020.
Prior Publication US 2023/0388532 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/44 (2014.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/172 (2014.11); H04N 19/186 (2014.11); H04N 19/1883 (2014.11); H04N 19/70 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of video encoding, comprising:
obtaining a video picture that includes a first component and a second component;
determining a plurality of offsets associated with the second component;
utilizing a sample value of the first component to obtain a class index associated with the second component;
selecting an offset from the plurality of offsets for the second component according to the class index; and
obtaining a sample value of the second component based on the selected offset,
wherein utilizing the sample value of the first component to obtain the class index associated with the second component comprises:
utilizing a first sample value of the first component to obtain a first parameter;
utilizing a second sample value of the first component to obtain a second parameter; and
obtaining the class index according to the first parameter and the second parameter.