[Insight-users] vtk polydata import / export

[imho]

Hi Mathieu,
thanks, I've had a look on this and I'll try it if I can't use a system 
of pipe-line between vtk and itk.
It looks good.

Imho


Mathieu Malaterre wrote:

> imho,
>     
>     You can have a look here:
>
> http://www . creatis . insa-lyon . fr/~malaterre/itk/polydata2itk . cxx
>
> This is based on
>
>     InsightApplications/Auxilary/vtk/vtk2itk.cxx
>
> But instead of transforming a vtkUnstructuredGrid it take into account 
> a vtkPolyData
>
> Beware that it has not been heavily tested. It currently only works on 
> triangle polydata (so you need to go through a vtkTriangleFiler first).
>
> HTH
> mathieu
>
>
> imho wrote:
>
>> Hi Luis,
>>
>> I use vtkPolyData to represent 2 3D liver's models builded from slices.
>> I already do registration on it with VTK (point-based + ICP), and now 
>> I'd like to use the demon registration in ITK.
>> So I'll try the conversion you purpose.
>>
>> Thanks for your help
>>
>> Imho.
>>
>>
>> Luis Ibanez wrote:
>>
>>>
>>> Hi Imho,
>>>
>>> The import/export connections currently available
>>> between ITK and VTK only manage image-to-image
>>> conversions.
>>>
>>> You may want to convert your vtkPolyData to a vtkImageData
>>> and then use the itkVTKImageToImageFilter available in
>>>
>>>    InsightApplications/Auxiliary/vtk
>>>
>>> In any case, a vtkPolyData may not be the best support
>>> for representing an image...
>>>
>>>
>>> Please let us know if you have futher questions,
>>>
>>>
>>> Thanks
>>>
>>>
>>>    Luis
>>>
>>>
>>>
>>> ------------------
>>> imho wrote:
>>>
>>>> Hi all,
>>>> is it possible to import and export a vtkPolyData or can I use 
>>>> images only?
>>>> How can I do?
>>>> I have two vtkPolyData volumes, and I'd like to use itk filters 
>>>> like this :
>>>>
>>>> vtk reader -> vtk filters -> itk filters -> vtk viewer
>>>> I've tried this :
>>>>
>>>> VTK                            ->              
>>>> ITK                    ->              VTK
>>>>
>>>> ITKImageExporter4            VTKImageImporter4            
>>>> ITKImageImporter4        == first POLY
>>>>
>>>> ITKImageExporter5            VTKImageImporter5 
>>>>                                                  == second POLY (no 
>>>> output)
>>>>
>>>> but I don't know how to convert my vtkPolyData or how to typedef 
>>>> the VTKimporter to make it work :
>>>>     typedef unsigned short PixelType;
>>>>     typedef itk::Image<PixelType, Dimension> ImageType;
>>>>     typedef itk::VTKImageImport<ImageType> ImageImportType;
>>>> is ok but not with a polyData, and
>>>>
>>>>     typedef itk::VTKImageImport<vtkPolyData*> ImageImportType;
>>>>  isn't ok
>>>>
>>>> Thanks a lot
>>>>
>>>> imho
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
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>