[argyllcms] Printer Profiling Patch Count and Profiling Generation Quality
- From: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 5 Jan 2010 00:12:26 +0100
Hi,
I'm having my first forays into printer profiling now. With
encouraging first results.
As some might have noticed, I'm the proud new owner of a ColorMunki,
when generating targets for it, the standard target can do about 90
patches, and the dense target can do about 210 patches on an A4 sized
paper.
The first profile I did was with 90 patches and -ql which seemed to
work reasonably well for satin photo inkjet papers, and less well for
true-matt photo inkjet papers.
Now I read my first 210 patch target (which worked excellently), and
I'm wondering whether it has any merit to use -q m?
And what if I do a 420 patch target, or 630 or 840? At what patch
counts are certain profile quality levels sensible?
After inspecting a generated profile with iccdump, I can't make much of it:
Input Channels = 3 (PCS=LAB?)
Output Channels = 3 (RGB?)
CLUT resolution = 9
Input Table entries = 512
Output Table entries = 512
That leaves the CLUT resolution and table entries... How do these fit
together? Besides the interpolation between entries, how does a table
lookup actually work?
Greame, kudos on the dense target option for the ColorMunki, the fact
that three rows are exactly the width of the Munki help a lot with
easily reading the target. This is genuinely a killer feature!
Regards,
Pascal de Bruijn
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