Geometric center of a group of particles?

Posted by HoweLab on Oct 09, 2009; 8:55pm
URL: http://imagej.273.s1.nabble.com/Geometric-center-of-a-group-of-particles-tp3690868.html

Hi.

We routinely generate images comprising 'roughly' circular groups of small, circular or ellipsoid particles or blobs. There are typically 5000-10000 per group. Is there an easy (or easier) way to determine the geometric center of such a group - in other words, a way to get an X,Y coordinate that represents the center of the group? The blobs are generally similar in size, but can sometimes cluster or clump together. These clumps should not 'pull' the center position towards themselves - i.e. we're looking for geometric center, not center of mass (I apologize if I'm not using those terms correctly). Thanks, in advance, for your advice.