Re: Target Reference file
Re: Target Reference file
- Subject: Re: Target Reference file
- From: Steve Upton <email@hidden>
- Date: Mon, 12 Jul 2010 16:25:30 -0700
At 1:29 PM -0600 7/12/10, david wollmann wrote:
>Hi all, I need some help getting a Target Reference file out of Spectral Vision Pro or ColorPort. We are using the Xrite 2989 patches target. The problem is doing comparisons in MeasureTool or CololLab.
>
>Both Spectral Vision Pro and ColorPort have this 2989 patch target, but neither seems to have a way to export the reference file. All I can export is an XML file that I can't seem to use for my needs at all.
>
>Without the reference file I can not use the compare feature in MeasureTool or ColorLab.
>
>So far what I have done is open a saved measurement text file (CGATS) in Excel. I then deleted all the Lab values and the Spectral values as they seemed to be my measured values. I kept only the CMYK values as they seemed to be the reference values. (I compared fresh measurements to another set done 24 hours later.)
>
>Then in ColorLab I switched the mode from CMYK to Lab so I could compare my measured values to these new extracted reference numbers.
>
>Is this a valid approach, can I trust the numbers as the reference? Would the Delta E 2000 values provide meaningful info or would they be suspect?
If you are suspecting that the reference file contains Lab values you can compare to, then please read Color Myth #2 here:
<http://www.colorwiki.com/wiki/Color_Management_Myths_1-5>
Perhaps you could describe the "reference" you are wanting to compare to? Some older behavior of the machine? Something captured in an ICC profile?
Regards,
Steve
________________________________________________________________________
o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o email@hidden 206.985.6837
________________________________________________________________________
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