From: "Sadik " <>
Newsgroups: comp.soft-sys.matlab
Subject: Re: roi detection
Date: Tue, 22 Jan 2013 02:28:09 +0000 (UTC)
Organization: University of North Carolina
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Hi Subbmdee,

Thresholding and then checking circularity of each blob should help. 

Please see regionprops and google the definition of circularity to see how you can utilize the properties coming with regionprops.