[Insight-users] Thin plate spine or interpolate

[Tim Hutton]

Hi Richard,

If your surfaces are represented as polygonal meshes you might find
VTK more suited to this than ITK. The problem of finding the nearest
point on a surface is easily solved using vtkCellLocator. I have often
used vtkThinPlateSplineTransform and vtkCellLocator for making a dense
correspondence between 3D scans of human faces, it works well for
this.

If your surfaces are represented as volume images then it would be
best to contour them or otherwise extract the surfaces you want, to
make these manipulations easier.

Tim

On 14/05/07, Zihua Su <zihuabox at gmail.com> wrote:
> Dear all
>
>
> I wanna have a correspondence between 2  3D surface. So, I decided to use
> thin plate spine for tackling this problem.
> A set of correspondence points have been found between these two surface,
> but i need to find more, by thin plate spline interpolation.
> I found the thin plate spine is not built for this purpose. Could anyone pls
> give me some clue?
>
> For example"
>    P1 is source points set, in surface S1, P2 is target points set, in
> surface S2.
>   After computing the wMatrix,  how can i find a correspondence  between
> point A in S1 to B in S2?
>
>
> Cheers
> --
> Richard
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users
>
>


-- 
Tim Hutton - http://www.sq3.org.uk

Take the Organic Builder challenge -
http://www.sq3.org.uk/Evolution/Squirm3/OrganicBuilder/