US 12,010,347 B2
System and method for video coding
Che-Wei Kuo, Singapore (SG); Chong Soon Lim, Singapore (SG); Jing Ya Li, Singapore (SG); Han Boon Teo, Singapore (SG); Hai Wei Sun, Singapore (SG); Chu Tong Wang, Singapore (SG); Tadamasa Toma, Osaka (JP); Takahiro Nishi, Nara (JP); Kiyofumi Abe, Osaka (JP); and Yusuke Kato, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Mar. 2, 2022, as Appl. No. 17/685,226.
Application 17/685,226 is a continuation of application No. PCT/JP2020/033343, filed on Sep. 2, 2020.
Claims priority of provisional application 62/895,184, filed on Sep. 3, 2019.
Prior Publication US 2022/0191487 A1, Jun. 16, 2022
Int. Cl. H04N 19/82 (2014.01); H04N 19/117 (2014.01); H04N 19/119 (2014.01); H04N 19/124 (2014.01); H04N 19/13 (2014.01); H04N 19/176 (2014.01); H04N 19/18 (2014.01); H04N 19/186 (2014.01); H04N 19/593 (2014.01); H04N 19/61 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/82 (2014.11) [H04N 19/117 (2014.11); H04N 19/119 (2014.11); H04N 19/124 (2014.11); H04N 19/13 (2014.11); H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/186 (2014.11); H04N 19/593 (2014.11); H04N 19/61 (2014.11); H04N 19/96 (2014.11)] 6 Claims
OG exemplary drawing
 
1. An encoder, comprising:
circuitry; and
memory coupled to the circuitry;
wherein the circuitry, in operation:
generates a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component;
sets the first coefficient value to zero in response to the first coefficient value being less than 64;
generates a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component;
generates a third coefficient value by adding the first coefficient value to the second coefficient value;
encodes a third reconstructed image sample of the chroma component using the third coefficient value;
determines a first parameter having the same value for Cb component and Cr component of the chroma component;
determines, using the first parameter, a model of entropy coding from a plurality of models; and
performs, using the model, the entropy coding of a second parameter of the CCALF process.