[Insight-users] Applying a transform? PointSet registration?

[Luis Ibanez]

Hi Robert,


The class that you are looking for is the:

TransformMeshImageFilter:
http://www.itk.org/Insight/Doxygen/html/classitk_1_1TransformMeshFilter.html

Simply instantiate this filter using your PointSet<> as template
parameter. Then connect as inputs your Transform and your input
PointSet.

The filter will apply the Transform to all the Points in your PointSet.


   Regards,


      Luis



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Atwood, Robert C wrote:
> I have been poring through the software guide and the Doxygen for hours, 
> and I cannot see how to apply a transform to a point or a PointSet? I 
> know how to apply to an image, you create a resample image filter and 
> set the transform , is there a similar filter for PointSets (and what is 
> it called) or is the process different?
> 
> 
> The immediate goal is to register two point sets, then somehow quantify 
> the difference between them. I believe that this would be enabled by 
> transforming one of the point set into the space of the other according 
> to the result of the registration.
> 
> The overall goal is to quantify (and eventually minimize) the misfit of 
> certain prostheses introduced at certain stages during the manufacturing 
> process, by scanning 'before' and 'after' examples. The scan method 
> produces a point set. The point set is not necessarily any sort of 
> regular grid. (The points are in  3-d by the way) The 2 sets should 
> generally be reasonably close to each other to start with (by placing 
> the example in the same location and orientation)
> 
> 
> 
> Thanks,
> Robert
> 
> 
> 
> 
> 
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