[Insight-users] Alignment of two 3D surfaces

[Luis Ibanez]

Hi JD,


   ITK can perform registration between surfaces.


You may want to use the PointSetToPointSetRegistration
method, that is described in the ITK Software Guide

     http://www.itk.org/ItkSoftwareGuide.pdf


You will find examples of source code for performing
ICP in the directory:


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


Note that the patent for ICP recently expired,
so that should not be an issue anymore.

Note also that one of the examples illustrates how
to accelerate the registration process by precomputing
a distance map to one of the surfaces. In this way, the
registration method uses less time finding the closest
neighbor points from one surface to the other.



    Regards,


       Luis


---------------------
Sylvain Jaume wrote:
> Hi John,
> 
> vtkIterativeClosestPointTransform may be what you need.
> 
> Regards,
> Sylvain
> 
> JDQ wrote:
> 
>> Hello all,
>>
>> I am trying to align one 3D surface to another using a rigid 
>> transformation.
>>
>> I have seen the registration examples that can align two grayscale 
>> images.
>>
>> What might be the best methods to look into to accomplish this?  I'm
>> not sure if the image registration methods are directly applicable to
>> surfaces (either a pointset, mesh, etc.)
>>
>> Many thanks to both the ITK community and anyone with some input here!
>> JD
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>>
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