Re: automatically draw a ROI circle

Posted by Gabriel Landini on Jun 10, 2009; 5:52pm
URL: http://imagej.273.s1.nabble.com/automatically-draw-a-ROI-circle-tp3692143p3692146.html

On Wednesday 10 June 2009 17:16:32 Michael Schmid wrote:
> this question is not really clear to me.
> - Inscribed circle: get it from Process>Binary>Ultimate Points
> - Best-fit circle: get the centroid and area from the particle analyzer
> - Circumscribed circle: modify the macro
>    http://rsb.info.nih.gov/ij/macros/FeretsDiameter.txt
> to determine the circumscribed circle and set the roi.

Or you can get the Minimum Bounding Circle with the Convex_Hull_Plus plugin.
http://www.dentistry.bham.ac.uk/landinig/software/software.html

> (BTW, the center of the circumscribed circle would be a nice addition
> to the Particle analyzer output...).

You can get the centre coordinates and the radius with the Particles8 plugin
(use the 'morphology' option).

Cheers

Gabriel