[vtkusers] vtkLandmarkTransform

[Tim Hutton]

For translation only, you can just translate to match the centroids of the
two point sets. I don't think there's a way of doing this in a VTK pipeline
at the moment so you'd need to do it manually. We might usefully add such a
mode to vtkLandmarkTransform.

Tim

On 12 November 2017 at 05:24, hlukeh <hlukeh at hotmail.com> wrote:

> I'm trying to find the best fit of a circular set of landmarks lying almost
> on a plane to a point cloud. I'm currently using a vtkLandmarkTransform
> with
> the mode set to Rigid Body. This does a good job of matching the two sets
> of
> data, but sometimes the best fit is found with a rotation and translation
> when I only want a translation (even if the fit isn't quite as good).
>
> I see three modes in the landmark transform, Rigid Body, Similarity and
> Affine, but all of those include rotation and translation (and scaling for
> Similarity).
>
> Does anyone know what transform could be used to match a set of landmarks
> to
> a set of points but limiting the method to translation only?
>
> Thank you,
>
> Luke
>
>
>
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-- 
Tim Hutton - http://www.sq3.org.uk - http://profiles.google.com/tim.hutton/ -
https://github.com/timhutton
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