[Insight-users] 3D mask in itk::GradientMagnitudeImageFilter

[Luis Ibanez]

Hi Stian,

The mask is the same in all dimension, even for a 5D image,
the filter will do:


                   -1     0     1


along each one of the 5 dimentions and then it will combine
the magnitude of the results.

This is simply equivalent to using finite differences in order
to estimate derivatives.


      Regards,


        Luis


-----------------------------
Stian Dalene Gjedrem wrote:

> Hello all,
> 
> in the ITK Software Guide there is a description of the mask that is used
> when a gradient image is computed from a 2D image.
> 
> My question is: what does the mask look like in 3D cases? Is the same mask
> used in all directions (x,y,z) or are differents masks, one for each
> dimension, used?
> 
> Thanks in advance for any help!
> 
> Best regards,
> Stian D. Gjedrem
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users
> 
>