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From: "Vihang Patil" <vihang_patil@yahoo.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: image processing
Date: Mon, 31 Mar 2008 05:55:02 +0000 (UTC)
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"misty m." <donotspam@smth.be> wrote in message <fsns6q$ke7
$1@fred.mathworks.com>...
> hi,
> i've got a problem with an image. You can take a look at 
> the image here: http://test-bone.pl.tl/
> 
> it is an image of a bone with few drilled holes (You can 
> see 3 drilled holes on the left side of a bone). i must 
> find edges of these holes (actually the middle one) 
using 
> matlab function 'edge' but because of these cracks i 
cannot.
> can You please suggest me some operation i can do on 
this 
> image to get rid of these crakcs so i can find edges of 
> these holes?
> 
> kind regards
>  
Just a suggestion.
How about using Hough Lines to detect the circular portion?
Once these circles are detected you can use the edge 
function.
HTH
Vihang