5 Replies Latest reply: Dec 2, 2014 12:07 PM by normfb RSS

    How can I  use photoshop to compare photos (before and after) treatment of a material that may lighten the color to quantitatively measure color differences?

    geegs60 Community Member

      I am trying to quantify the effect of several different whitening agents on stained material.  I will have baseline photographs.  The material will be treated with a whitener and then I will take post treatment photos for comparison.  Rather than just looking and saying "yes it's lighter", how can I quantify the change in a valid way?  Also is there a different method I should consider?  Thank you for your consideration.