[Openicc] Introduction / Gutenprint

[Graeme Gill]

Michael Sweet wrote:
> Another issue with this approach is performance - doing color
> management at this point means processing a LOT of pixels, ~45million
> for a 720 DPI letter/A4 page, and most printers support higher
> resolutions these days...

Yes this is usually less efficient than converting the color before
rendering, but it is not impossibly slow. 45 Mpixels is about
3-4 seconds on a modern processor (depending on the pixel depth).
Overall, not a desirable option for everyday printing though.
[It turns out that this approach is about the only practical
method of implementing PDF/X3 proofing though.]

Graeme Gill.