Re: Prelinearizing reference files
Re: Prelinearizing reference files
- Subject: Re: Prelinearizing reference files
- From: Marco Ugolini <email@hidden>
- Date: Fri, 03 Feb 2006 15:15:38 -0800
In a message dated 2/3/06 2:11 PM, Dan Reid wrote:
> Hey Marco,
> PM5 *was* going to have a prelin feature but that disappeared in late
> betas. You can post-lin in PM5 ProfileEditor to counteract device drift but
> not pre-lin like MonacoProfiler.
> If you are creating RGB printer profiles with a printer driver and not a RIP
> then I would NOT try to linearize the RGB output.
Hi Dan.
Not linearize the RGB output? Why is that better when using a driver and not
a RIP, specially if the device is non-linear?
Also, as far as *pre*-linearizing is concerned, isn't it a matter of
applying a transfer function to the coordinates of the color samples listed
in a testchart's reference file, so that the testchart has patches that are
more evenly distributed in the CIELab connection space for a particular
ink+resolution+paper+driver combination? Wouldn't it be theoretically
possible to do that, say, using a properly set-up Excel worksheet, perhaps
using 3x3 matrices? I'm far from being a math wiz, but perhaps someone has
figured out the procedure.
And, finally, is anyone on this list using the pre-lin feature in Monaco
Profiler, and how do you like the results, compared to what you get making
profiles without it?
Thank you.
--------------
Marco Ugolini
Mill Valley, CA
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