[argyllcms] Re: [argyllcms] targen parameter "m" - what's it for?
- From: "Gerhard Fuernkranz" <nospam456@xxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 25 Jul 2005 11:09:34 +0200 (MEST)
> --- Ursprüngliche Nachricht ---
> Von: "Greg Sullivan" <greg.sullivan@xxxxxxxxxxxx>
> Can someone explain what the targen "m" parameter is for? (I don't
> understand the documentation)
>
> I had thought that it may represent the step size for each
> colourant, such that the target is created from combinations
> of each colourant, where the colourant is changed in steps,
> m times over it's complete range.
Greg,
correct. It adds patches to the target, which are arranged in a regularly
spaced "color cube" (in device space) consisting of m^3 (RGB) or m^4 (CMYK)
data points.
> But the default value of 2 is far too low for it to mean this!
Right, -m2" covers only the extremes. But I wouldn't imply that it is far
too low, since the full-spread patches (-f) cover the whole gamut much
better and much more uniform anyway, than a regularly spaced grid in device
space would do.
Regards,
Gerhard
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