[Insight-users] setting pixels in an ellipsoid region

[David Doria]

On Tue, Feb 14, 2012 at 6:07 AM,  <danieljohnsonusa at netscape.net> wrote:
> I am doing image processing of a 3D image and need to modify all the pixels
> in an ellipsoid region of the image.  I'm relatively new to ITK, but from
> what I've read it appears the only way built in to the libraries for
> defining an image region is a cube.  Is there any existing function or
> library already written for defining a spherical or ellipsoid region of an
> image?  I'm about to start writing code to define a region like this for
> setting pixels with an image iterator, but I wanted to check first to make
> sure someone hasn't done this already.  If nothing like this exists yet, I'd
> be happy to share the code after I finish it if anyone else would find it
> useful.
>
> Thanks,
>
> Daniel

You might be able to use this:
http://www.itk.org/Wiki/ITK/Examples/Morphology/BinaryBallStructuringElement