[vtkusers] procrustes for non-rigid initialisation

[imho]

Hi Rasmus,

thanks for your answer, I'll try vtkLandmarkTransform.
By selecting the points, I mean manually pick up the 3 or 4 points on 
the two images to do the pre-registration in a fast way. Is it possible?
Thanks

Rasmus Reinhold Paulsen wrote:
> Hi Imho,
> 
> On Fri, 2 May 2003, imho wrote:
> 
> 
>>I'd like to use the vtkProcrustesAlignmentFilter as first registration 
>>method (before a non-rigid one).
> 
> 
> I am not really sure that I understand your question. Why use Procrustes
> if you have only two pointsets? vtkLandmarkTransform should be able to
> provide you with the transform required to align set1 with set2 in a
> least-squares sense.
> 
> 
>>If I've two pointsets, how can I tell wich points use to do the 
>>registration ( 3 or 4 points)?
> 
> 
> Do you mean how to select the points, that represent your data in the
> optimal way? If that is the case, a specification of "optimal" is needed.
> 
> Please clarify.
> 
> Regards,
> Rasmus
> 
> 
> 
>