Re: Driving me nuts

Posted by EHB2010 on Mar 21, 2010; 2:26pm
URL: http://imagej.273.s1.nabble.com/Driving-me-nuts-tp3688830p3688831.html

I'm guessing the images are colour RGB? If so the white and grey areas will contain red, green and blue but in equal amounts; where your red area differs is that it has more red than green or blue.

So I would calculate the % of pixels which have more Red than either of the two other colours.

ps. how are you taking photos with some red areas and some greyscale areas?