On Mon, 2018-06-25 at 02:41 -0700, GiuseppeD. via gimp-developer-list wrote: > Dears, > I would do a colour analysis on my picture. I already took picture > with a > colour palette for calibration. > What do I do now for calibrate with my colour reference? How can I > have RGB data after the calibration? Which Linux distribution are you using? There should be colour management software included which can take the picture of the photo card and make a colour profile. If you do not have that software, another way is to open the card in gimp, use the colour->levels tool and click on the black, the white, the grey patches with the black point, white point, grey point eye droppers in the levels dialogue and hit OK. Then open your photo, open colours->levels, and apply the same settings from the history dropdown at the top of the dialogue box. Liam -- Liam Quin - web slave for https://www.fromoldbooks.org/ with fabulous vintage art and fascinating texts to read. Click here to have the slave rewarded with a dog biscuit. _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list