[vtk-developers] vtkProcrustesAlignmentFilter

Tim Hutton T.Hutton at eastman.ucl.ac.uk
Tue Jan 15 09:07:25 EST 2002

I like John's suggestion, being able to pass collections in and out of 
filters will be useful for other classes that work on sets of data. I have 
two in mind (I presume John already has more):

vtkProcrustesAlignmentFilter - aligns sets of point sets mutually together
input: vtkPointSets
output: vtkPointSets

DenseSurfaceModelFilter - builds statistical models of surfaces
input: vtkPolyDatas
outputs: various

and I know Rasmus has in mind:

PrincipalComponentsFilter - finds 'modes' of shape variation
input: vtkPointSets (output of a vtkProcrustesAlignmentFilter)
outputs: various

If this is all wrong and the approach doesn't fit with VTK then please let 
me know. The drawback with David's suggestion of GetOutput(i) & SetInput(i) 
is that it makes pipelining filters a pain. Am I right?



At 03:41 08/01/2002 +0000, John Biddiscombe wrote:
> > Also, note that a 'Collection' is not a vtkDataObject so having a
> > method with the signature
>Should you go ahead with any of the previously mentioned, here's a
>datasetcollection derived from dataobject.
>(Might want a name change to something like DataSetDataObjectCollection ...)

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
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