[ITK] [ITK-users] Small gaussian sphere iterator over 3D image

[Matt McCormick]

Hi Leslie,

The ShapedNeighborhoodIterator allows activations of a box of voxels
within a given radii.

For your operation, you may want to investigate the
NeighborhoodOperator and related classes [1].

More information on how to use neighborhood classes can be found in
the ITK Software Guide (see itk.org for links to both the electronic
and hard copy versions).

Hope this helps,
Matt


[1] http://www.itk.org/Doxygen/html/classitk_1_1NeighborhoodOperator.html

On Mon, Mar 30, 2015 at 9:15 AM, Leslie Solorzano
<lesolorzanov at gmail.com> wrote:
> I am aware of the existance of ShapedNeighborhoodIterator. But I don't
> understand how to use it.
> I have a 3D image and I would like to iterate trought it and calculate a
> value according to a guassian sphere centered at each voxel.
>
> I don't understand if the shaped iterator makes a box with given radii (or
> offsets), or it makes an ellipse with given offsets.
>
> My sphere is very small, a 4 voxel raidus (7 maximum), and I'd like the
> values farthest from the center weight less in my sum, thus the gaussian.
>
> So it is pretty simple, make a shapedneighborhooditerator to be a sphere,
> iterate and keep each value as the weighted sum of the values in its
> neighbors in a 3D image, can some point me in the right direction?
>
> Thankyou
>
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