Patent ID: 11863779
Assignee: QUALCOMM INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. The non-transitory computer-readable storage medium of claim 13, wherein the one or more functions that apply the filtered values to the one or more chroma samples of the chroma block only when the one or more chroma samples and the collocated luma samples of the luma block are on the common side of the virtual boundary comprise:

if (y<CtbSizeY/SubHeightC−2 and y*SubHeightC>=CtbSizeY−4), scaledSum=0,

sum=curr+scaledSum, and

CC-ALFPicture[xCtbC+x][yCtbC+y]=Clip3(0,(1<<BitDepth)−1, sum),

wherein CtbSizeY represents the size of the luma block, SubHeightC is determined according to a chroma format for the CTU, sum represents a value calculated from samples of a luma picture including the luma block, curr represents a current value of one of the samples of the chroma block prior to filtering, scaledSum represents the filtered value, CC-ALFPicture represents a filtered chroma picture corresponding to the chroma block, xCtbC+x represents an x-position of a sample of the filtered chroma picture, yCtbC+y represents a y-position of the sample of the filtered chroma picture, and BitDepth represents a bit depth of the video data.