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 |
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.
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