Advice request: Recognizing and measuring diseased leaf areas

Posted by Jonathan Rosenthal on
URL: http://imagej.273.s1.nabble.com/Advice-request-Recognizing-and-measuring-diseased-leaf-areas-tp3691171.html

I'd greatly appreciate any suggestions as to how I can use ImageJ on  
scanned, color images of leaves to detect several different plant  
diseases and to measure the areas affected (they turned yellow or  
brown or grew small bumps on the surface).
     Thanks very much,

Jonathan Rosenthal
Visiting Scholar
Dept. of Biology
Vassar College