How to analyse a pattern of holes?

Posted by BillyWu on Aug 04, 2015; 8:40pm
URL: http://imagej.273.s1.nabble.com/How-to-analyse-a-pattern-of-holes-tp5013892.html

Hi guys. I'm doing my MSc thesis and I'm using ImageJ software to look at measuring shotgun spread patterns. Basically, I have a white paper target that I've photographed and I know the dimensions of the paper. Setting the scale is easy :)

what I need to know is how can I use ImageJ to draw a circle of best fit around my shot grouping? I need to analyse it with image software rather than using my own interpretation, so if I could find a method that accounts for 95%> of my spread pattern and then fits a circle of best fit to it then that'd be perfect :)

Could anyone tell me how to do this please?