Patent ID: 6674479
Filing Date: 2004-01-06
Classification: H04N

Abstract:
A method comprising:performing conversion of samples of YUV (luminance and chrominance) components from a planar YUV 4:2:0 format to a racked YUV 4:2:2 format with the same or different surface resolutions based on successive passes of the different YUV components, wherein a successive pass includes the following, scaling a respective one component of a YUV sample to a destination resolution, wherein the YUV sample is scaled and sampled by an interpolation formula {&agr;&mgr;1âˆ’(1âˆ’&agr;)&mgr;0}, wherein â€œ&agr;â€  indicates a pixel adjustment to align with the destination surface, &mgr;1 is the value of the lower component value and &mgr;0 is the value of the higher component value; aligning the respective one component of the scaled YUV sample with a sampling point of the packed YUV 4:2:2 format; and writing said respective one component in the packed YUV 4:2:2 format.