http://mathforum.org/kb List of forum topics en http://mathforum.org/kb/thread.jspa?messageID=8124027&tstart=0#8124027
I = imread('4i0tb8jpg.png');
G = rgb2gray(I);
M =]]> Jan 22, 2013 12:26:08 PM Jan 22, 2013 12:26:08 PM sadik.hava@gmail.com 0 http://mathforum.org/kb/thread.jspa?messageID=8122139&tstart=0#8122139 > Hi]]> Jan 22, 2013 6:51:09 AM Jan 22, 2013 6:51:09 AM pani1mys@rediffmail.com 1 http://mathforum.org/kb/thread.jspa?messageID=8119502&tstart=0#8119502
Thresholding and then checking circularity of each blob should help.

Please see regionprops and google the definition of]]> Jan 21, 2013 9:28:09 PM Jan 21, 2013 9:28:09 PM sadik.hava@gmail.com 2 http://mathforum.org/kb/thread.jspa?messageID=8116278&tstart=0#8116278
I am trying to mark (detect) the region of interest.
The roi in the below figure is at the top center with a black band (white in its]]> Jan 21, 2013 8:17:08 AM Jan 21, 2013 8:17:08 AM pani1mys@rediffmail.com 3