about algorithm in sharpening process

Posted by RenJingyuan on Jul 02, 2019; 3:07am
URL: http://astroimagej.170.s1.nabble.com/about-algorithm-in-sharpening-process-tp1170.html

Recently, I used the sharpening process in AstroImageJ for an HST image of a planetary nebula IRAS 17150-3224 to search for whether there are arcs inside the lobes for tracing the mass-loss history of this object.

I tried unsharp masking function in IDL and I'd like to compare these results. Does anyone like to show me more details about the exact algorithm that is used in the sharpening process in AstroImageJ? Related articles are highly welcomed. Thank you so much for your help.