[Insight-users] Apply a non-linear transform on a Spatial Object?

[Luis Ibanez]

Hi Fred,

The ITK SpatialObjects have a natural support for AffineTransforms
but not for non-linear transforms.

The closest you could get to applying a non-linear transform will
be by taking the points of the VesselTubeSpatialObject and
mapping these points through the Transform.

      newPoint = kernelTransform->TransformPoint( oldPoint );


The mapping will then be correct for the medial axis of the tube,
but not necessarily for the normals and the tube width.


    Regards,


           Luis


----------------------------------------------------------
2009/11/24 frédéric salvador <frederic.salvador at gmail.com>:
> Dear all,
>
> I have built a model representing the pulmonary arteries by means of
> VesselTubeSO, and I would like to apply a non-linear thin plate spline
> transformation on it. I have seen in the itkSoftwareGuide that it is
> possible to apply linear transfo on SO, but is it possible to apply
> non-linear ones such as the itk::ThinPlateSplineKernelTransform for
> instance?
>
> Thank you very much in advance for your answer.
>
> Fred
>
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