[vtkusers] Re: [Insight-users] Generating Splats and/or Point based modeling

[Luis Ibanez]

Hi Arash,

 From your email, it seems that you have

1) A Point Set

2) an Image (the texture)

3) a Geometrical model of an object

4) an association between (2) and (3)
    which is what I would assume you mean
    by "texture wrapped object"

and that you want to find the geometrical
relationships between (1) and (2+3).


Is that a fair description ?


Is that's the case, you could work out
a variation of the metric used for ICP.

In your variant you could take into account
characteristics like second order derivatives
of the intensities in the texture.

You may want to look at the implementation
of the PointSetToPointSet metric used for ICP
http://www.itk.org/Insight/Doxygen/html/classitk_1_1IterativeClosestPointMetric.html

and to the examples in

   Insight/Examples/Registration/
             IterativeClosestPoint1.cxx
             IterativeClosestPoint2.cxx
             IterativeClosestPoint3.cxx



   Regards,


       Luis




---------------------
Arash Jahangir wrote:

> Hi all,
> Given a set number of points and a texture wrapped object, I am looking 
> for suggestions as to how best to derive a splat or point cloud.  I 
> suspect the best solution will be an optimization between the geometry 
> and the texture.  But I can't think of how to derive the optimization 
> function between the texture and geometry.  Note that I am not really 
> concerned with the rendition (which is what most of the literature on 
> splats is about), rather I just want to have a decent point based 
> model.  Any help is much appreciated.
>  
> thanks,
> Arash
>  
>  
> 
> 
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