Using Find Edge Function

Posted by AMD123 on Nov 27, 2015; 9:53pm
URL: http://imagej.273.s1.nabble.com/Using-Find-Edge-Function-tp5015040.html

Hello,

How can I define ROI on boundaries of an object when it is not a composite ROI?

I want the RIO to be the area inscribed in my object; so I used " find edge" and the edges were perfectly defined, but when I try to "create selection"  I get this message " This command creates a composite selection from a mask ( 8-bit binary image with white background) or from an image that has been thresholded..."

Thank you.