[Insight-users] Easy way to find gradient of an image at a particular index?

[Cory Quammen]

Hi all,

I could dig in the documentation for this, but am hoping someone on the
list just knows off the top of his or her head.

I'd like to compute the gradient of a 3D image given an index. Is there a
one- or two-liner to do this in ITK? I'd like to avoid computing the full
gradient image.

Thanks,
Cory

-- 
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill
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