[Insight-users] GradientRecursiveGaussianImageFilter

[salah]

Hello all,

I have a 3D itk binary image containing a segmentation,  and I want to =
compute the
gradient at the outer surface of the segmented object.
Is the (GradientRecursiveGaussianImageFilter) the right filter to use? =
or there is a=20
better one? BTW, I already used this filter, but found it very sensitive =
to the value of
sigma and image spacing. Is there a rough method to guess the value of =
sigma ?

Many Thanks,
Zein=20