SIZE MEASUREMENT OF PARTICLES (THESIS DUE TOMORROW..PLEASE HELP!)

Posted by Geology Guy on Aug 12, 2013; 2:07am
URL: http://imagej.273.s1.nabble.com/SIZE-MEASUREMENT-OF-PARTICLES-THESIS-DUE-TOMORROW-PLEASE-HELP-tp5004387.html


Good Evening Everyone,
I need to measure the size of particles within the yellow boundaries in the image I attached. I learnt that size of objects or particles can be measured using either "Fit Ellipse" "Feret Diameter" or "Area". The purpose of my thesis is that I want to see if there is a relationship between the size of the particles within that yellow boundary and overall size of the space between them. I used "Area" in all the graphs I plotted but now my Professor is asking me why I did not use the Feret diameter instead. I used "Area" instead of "Feret Diameter" because someone on here told me that "Area" in Image J is a better estimate than "Feret Diameter" for the size of an object? Anyway I have no idea why the former is better than the latter and was wondering if someone can please clarify this.

My thesis is 10 hours from writing this message.

Thank you all for your help.