[Insight-users] Question: Registration of vectorfields

[Ghassan Hamarneh]

Hello Markus,

Hope this helps you: (see point #2)
http://public.kitware.com/pipermail/insight-users/2005-April/012605.html

/Ghassan Hamarneh

> On 2/14/07, Markus Weigert <m.weigert at fz-juelich.de> wrote:
> > Dear all,
> >
> > I have a question concerning the transformation of vector fields.
> > Assuming, I would have two 3D vector images which I would like to register
> > rigidly.
> >
> > What would happen to a vector image after a transformation (say rotation +
> > translation) is applied?
> > Would also the orientation of the vectors (image information) change due to
> > the  transform (that is what I want) or only the position of the vectors?
> > Of course, this would rise the need to treat voxels like spatial objects which
> > have an orientation.
> >
> > Furthermore:
> > How would the deformable registration algorithms in ITK deal with two vector
> > images as input? Do you know any metric which could be applied for such a
> > task? I think, this would rise the need for some new kind of deformation
> > model where the transform for ech voxel is not only a translation but some
> > kind of rigid transformation and the metric would also need to take the
> > orientation into account.
> > However, the question for me is if something like that would still be
> > computable on a common personal computer.
> > These questions arrose from meg where image information is a vector field
> > and needs to be transformed for example to some MR images.
> >
> >
> > Best regards,
> > Markus
> >
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