[ITK Community] [Insight-users] Warping 2D contours in 3D

[Luis Ibanez]

Hi Nookie,

If your final goal is to map the 2D contours,
*and*
if the points in your contours have 3D coordinates,

then, you can do the mapping without having to create a surface mesh.


Simply iterate through the 3D points in the contours and map them
using the transform that you got from the registration process, with
the methods


           outputPoint = transform->TransformPoint(  inputPoint );

With this mapping process you can generate a family of contours
in the destination space.

Note that the 2D contours that were aligned with the slices of one
image, most likely will not be aligned with the sliced of the destinaiton
image after the transformation (due to potential rotations in 3D).


  Regards,

      Luis



On Fri, Jan 10, 2014 at 10:02 AM, nookie <limpforlife at aol.com> wrote:

> Hi,
>
> I've already read through the internet but couldn't find something to solve
> my problem.
>
> I've got 2D contour points for every slice from my CT.
> From the registration of two CTs I get a 3D deformation field. With that I
> want to warp my contours from one CT to the other.
> But in order to do that I need something like a 3D mesh build from my
> contours.
>
> By now, every functionality I found requires for example triangles of
> points
> to create a mesh. But I just have the independent points per slice.
>
> So I wanted to ask If someone has an idea how to deal with that.
>
> Many thanks!
>
>
>
>
> --
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