| CPC H04N 19/117 (2014.11) [H04N 19/132 (2014.11); H04N 19/167 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/82 (2014.11)] | 7 Claims |
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1. A method of filtering reconstructed video data, the method comprising:
inputting a reconstructed luma picture sample array prior to a luma adaptive loop filtering process;
inputting a reconstructed chroma picture sample array filtered according to a chroma adaptive loop filtering process;
inputting a chroma location specifying a top-left sample of a current chroma coding tree block;
setting a luma location, corresponding to a current chroma sample, equal to a location defined by a horizontal location of the current chroma samples multiplied by a sub-width value and a vertical location of the current chroma sample multiplied by a sub-height value, wherein the horizontal location and the vertical location are derived from the chroma location;
deriving luma sample locations inside the reconstructed luma picture sample array by using the luma location;
deriving a variable by using cross-component filter coefficients and the reconstructed luma picture sample array defined by at least one of the luma sample locations; and
deriving a modified filtered reconstructed chroma picture sample array by using the reconstructed chroma picture sample array and the variable.
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