[argyllcms] Re: Extract L*a*b, XYZ values from a target image using scanin

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 12 Feb 2013 10:35:36 +1100

David Irisarri wrote:


> I ma David and I am trying to create a color profile. I would like to ask
> you guys how to extract color values from an image in order to create a
> CGATS file. I am using scanin but it only generates a val file with RGB
> values.

If you want to interpret the RGB image as CIE values, then you
have to specify the device space using an ICC profile. You
can use the "scanin -c" mode to do this, see

> The image I have is in aRGB and at least I would need to extract
> these values in CIE L*a*b. XYZ would also be very welcome.
> I need to extract these values because I want to create a profile according
> to this TIFF image, I don't want to match the colors according to a chart with
> its own values.

The RGB TIFF is being used as the reference values ?

Graeme Gill.

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