[vtk-developers] vtkProcrustesAlignmentFilter

[Tim Hutton]

Hello developers,

There are a couple of us that are keen to provide an implementation of the 
Procrustes algorithm for aligning a set of objects together in a least 
squares sense. Its functionality is somewhat similar to 
vtkLandmarkTransform except that it would take a collection of datasets 
instead of two. This would be useful for building models from collections 
of objects and is a core part of many other algorithms.

I (we) have two questions:

1) Would VTK benefit by having such a class? Perhaps Procrustes is not a 
pure visualization technique but then neither is 
vtkThinPlateSplineTransform which is used by lots of people.

2) How would such a class be best implemented? I have envisaged an 
inheritance tree like this:

vtkSource
|
vtkDataSetCollectionSource
|
vtkDataSetCollectionToDataSetCollectionFilter
|
vtkProcrustesAlignmentFilter

Is this sensible? Maybe it should be based on transforms instead?

Any comments welcome. Thankyou!

Tim.
---------------------------------------------------------------------------
Tim Hutton,                        http://www.eastman.ucl.ac.uk/~dmi/MINORI
Research Fellow & PhD student,                   T.Hutton at eastman.ucl.ac.uk
MINORI Project, Biomedical Informatics Unit,     Tel: [+44] (0)20 7915 2344
Eastman Dental Institute, UCL,                   Fax: [+44] (0)20 7915 2303
256 Gray's Inn Road, London WC1X 8LD, UK      Mobile: [+44] (0)7748 678 832
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