[Insight-users] Re: Which Segmentation algorithm can fulfill this task?

Luis Ibanez luis.ibanez at kitware.com
Fri Mar 18 15:29:35 EST 2005

HI Sotiris,

You may want to try the Hough Circle detection,


in particular if you don't want to require the
user to provide seed points for the segmentation.



Sotiris Dimopoulos wrote:

> Hello mr. Ibanez
> I have an image that consists of a white ring(which
> has a width and isn't just an edge) and inside &
> outside the ring everything is black.So,my problem is
> that i want to segment only the black area inside the
> ring & ""i want it to happen automatically without
> defining a Position seed"".
> I had in mind to take advantage of the pixel intensity
> and somehow automatically force the zero level-set to
> be extracted at these white pixels,so that the area
> inside it to become positive and segment the area
> inside the ring.
> I'm I in the right track or i have got it wrong?
> Is what i think feasible?
> I'm quite newbe inthe itk and any help would be
> appreciated.
> Regards
>   Sotiris
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