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Re: Definition of roundness parameter

Posted by karenacollins on Mar 01, 2023; 7:41am
URL: http://astroimagej.170.s1.nabble.com/Definition-of-roundness-parameter-tp2172p2174.html

I'll also note that the FWHM estimate from the centroid routine is not particularly accurate. The "Seeing profile" (radial profile) algorithm provides a much better and direct FWHM measurement, but at the moment doesn't provide the individual X and Y axis direction FWHM measurements, so the "roundness" is not extracted from the radial profile.