Re: [Announce] WinSANE 0.1.0.0 Release

Graham Stoney (greyham@research.canon.com.au)
Thu, 13 May 1999 10:48:21 +1000 (EST)

Milon Firikis writes:
> > IMO it does make a difference weather white is really white
> > (255) or light grey (240) once you print it out on paper.
>
> For gray images:
> white --> 0
> black --> 255 (240)

If you're talking about the K channel in CMYK, that's true; but grayscale
images usually have the same polarity as RGB: 0 = black, maximal value = white.

The point about multiplying by 17 instead of 16 when going from 12 bit to
16 bit is that it preserves the maximal value for white if the frontend uses
all 16 up-sampled bits.

Regards,
Graham

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