[Insight-users] can we apply transformation on circular region of interest in ITK

[Luis Ibanez]

Hi Prateep,

Not really, the underlying structure of the
BSplineDeformableTransform assumes
that you have a rectangular domain
(at least topologically).


You could however approximate a circular
domain with the ITK KernelTransforms:
http://www.itk.org/Doxygen310/html/classitk_1_1KernelTransform.html

if you carefully place the landmarks in a
radial configuration.

You may want to try with the TPS Transform:
http://www.itk.org/Doxygen310/html/classitk_1_1ThinPlateSplineKernelTransform.html

for example.


      Luis



--------------------------
On Thu, May 24, 2012 at 3:32 PM, Prateep Mukherjee <pmukherj at umail.iu.edu>wrote:

> Hi,
>
>  Is there a way to apply itk::BSplineDeformableTransform  on circular
> regions ?
>
>  I am currently using BSplineDeformableTransform as the
> transformation matrix. I couldn't find a way of setting a circular
> region of interest in BSplineDeformableTransform.
>
>  So after placing the grid points, I need the transformation to be
> applied on a circular region around the grid point.
>
>  Thanks a lot for your time.
>
> --
> Prateep.
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