Hi everybody, maybe some of you know what equidensities are: these are zones of equal or similar tonal values in a black and white negative. At the time one used lith film masks to get them.
I need to do something like that with an alphaChannel image using imaging lingo, but I am not sure how to do it. For me it would be good enough to separate a grayscale image in two images, one with all tonal values above a given threshold value blackened and another where all values below this value are black. So one could break it down to the question: How do I blacken all areas below or above a threshold value in a grayscale image? Any ideas? Thanks in advance Michael [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/lingo-l.cgi To post messages to the list, email [email protected] (Problems, email [EMAIL PROTECTED]). Lingo-L is for learning and helping with programming Lingo. Thanks!]
