[argyllcms] Re: Contributed ccmx files
- From: Dariusz Żurawski <zurdar@xxxxxxxxx>
- To: Konstantin Pyanzin <argyllcms@xxxxxxxxxxxxx>
- Date: Wed, 27 Oct 2010 21:16:20 +0200
Hello!
> I used a Spyder3Elite colorimeter and an i1Pro as the reference
> spectroradiometer.
> I compared created profiles only.
> For example, Green stimulus in each profile:
> i1Pro: x=0.2279, y=0.6863
> Spyder3Elite without correction: x=0.1987, y=0.6556
> Spyder3Elite with my correction matrix: x=0.2270, y=0.6899
So it's clearly visible that Spyder3 accuracy is improved dramatically after
calibration. Differences in stimulus locations are respectively "292, 307"
vs "9,-36" - it's distance from reference location (i1Pro measurement).
> For Green stimulus:
> i1Pro: x=0.2252, y=0.6895
> Spyder3Elite without correction: x=0.1954, y=0.6585
> Spyder3Elite with "generic" correction: x=0.2173, y=0.6888
> It isn't a great result, but it is better than nothing.
Maybe it isn't great, but it's considerably better than no calibration at
all. And it's quite comparable to results obtained with your correction
matrix. Here distances are respectively "298, 310" vs "79,7". Difference
between both methods (custom built ccmx and generic correction) is that with
custom matrix you can trust in your measurements and with generic matrix you
can only hope that everything is OK.
--
Best regards,
Darek
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