US 12,348,748 B2
Cross component filtering using a temporal source frame
Yixin Du, Los Altos, CA (US); Xin Zhao, San Jose, CA (US); Liang Zhao, Sunnyvale, CA (US); and Shan Liu, San Jose, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed on Aug. 29, 2023, as Appl. No. 18/458,015.
Application 18/458,015 is a continuation of application No. 17/748,839, filed on May 19, 2022, granted, now 11,778,218.
Application 17/748,839 is a continuation of application No. 17/091,605, filed on Nov. 6, 2020, granted, now 11,375,221, issued on Jun. 28, 2022.
Claims priority of provisional application 62/975,516, filed on Feb. 12, 2020.
Prior Publication US 2023/0412828 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/44 (2014.01); H04N 19/117 (2014.01); H04N 19/132 (2014.01); H04N 19/137 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/513 (2014.01); H04N 19/82 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/117 (2014.11); H04N 19/132 (2014.11); H04N 19/137 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/513 (2014.11); H04N 19/82 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for processing video data, the method comprising:
processing a coded video bitstream that includes the video data according to a format rule, wherein
the coded video bitstream includes prediction information of a current frame and a temporal source frame different from the current frame; and
the format rule specifies that:
a cross component filter is applied to reconstructed samples in the temporal source frame to generate offsets,
the offsets are combined with first reconstructed samples of a current block in the current frame to generate second reconstructed samples of the current block,
the temporal source frame is an inter coded frame; and
at least one of (i) the inter coded frame has a lower quantization parameter (QP) than the current frame, (ii) a temporal distance between the inter coded frame and the current frame is less than a threshold, and (iii) the inter coded frame is a reference picture that is used in motion compensation during a reconstruction of the current frame.