On Monday, November 26, 2012, 7:28:34 PM, Iliah wrote: IB> Dear Ben, >> Perhaps an iterative or integrated (in the Calculus sense) approach could >> permit doing color profiling on the raw channel data before demosaicing? IB> Before demosaicking, that is before some form of recombination of IB> raw channels, we do not have colour information at all. We need to IB> run recombination / demosaicking to calculate two missing IB> components for each pixel. Raw channel data is some form of IB> monochrome, recorded as shades of grey so to speak. This is true if spatial resolution is of importance. For large, evenly lit solid color patches, though, it seems that per-channel averages over a large number of photosites could be done without demosaicking. -- Chris Lilley Technical Director, Interaction Domain W3C Graphics Activity Lead, Fonts Activity Lead Co-Chair, W3C Hypertext CG Member, CSS, WebFonts, SVG Working Groups