removing ring artefacts

Posted by Don R. Baker on Sep 16, 2005; 11:00pm
URL: http://imagej.273.s1.nabble.com/removing-ring-artefacts-tp3704861.html

Hello All,

We are working on micro-tomography images of bubbles in glass
collected at the Advanced Photon Source.  We are having problems
removing the ring artefacts while still retaining the bubbles because
they appear very similar in many of our images.  We have developed a
series of filtering steps that removes most of the rings, but we still
have some problems with rings, especially near the centre of the image.
I have checked the archives of this mailing group and the plugins page
for ImageJ and cannot find any evident solution to the ring artefact
problem, but yet I know that this problem is a common one so I feel
there must be a solution out there that I have simply missed.

Any help you can offer will be appreciated very much.

Wishing you all the best from Montreal,

Don
--
"Melting rocks today for a better tomorrow . . . "
Don R. Baker, Professor of Geochemistry, Earth and Planetary Sciences,
McGill University 3450 rue University, Montreal, QC Canada H3A 2A7  514-398-7485