[vtkusers] Howto supply vector of itk::OrientedImage::Pointer to ImageToVTKImageFilter

[Jothybasu Selvaraj]

I am not much familiar with ITK, but if you convert all the 2D images into
vtkImageData (all having the same extent and no. of scalar components) you
could convert it into a 3D image set with vtkImageAppend.

OTHERWISE

If it is possible to create 3D c array from the itk images could
vtkImageImport to import into vtk.


Jothy

On Wed, Oct 19, 2011 at 3:47 PM, Divya Rathore <divyarathore at gmail.com>wrote:

> Thanks for the response, Jothy.
>
> I did came across this sample. Unfortunately, the data has already been
> read and re-reading is not an option here (the example you refered to reads
> the data using itk::ImageSeriesReader).
>
> I have no choice but to supply vector<ImageType::Pointer> ImageArray into
> the itk::ImageToVTKImageFilter.
>
> Any suggestions?
>
> best regards,
> Divya
>
>
> On Wed, Oct 19, 2011 at 3:35 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:
>
>> First try to convert your 2D slices into a 3D volume using itk. Have a
>> look at this
>>
>> http://www.vtk.org/Wiki/ITK/Examples/IO/VolumeFromSlices
>>
>> Then convert the itk 3D image into vtk 3D image.
>>
>> HTH
>>
>> Jothy
>>
>>
>> On Wed, Oct 19, 2011 at 3:29 PM, Divya Rathore <divyarathore at gmail.com>wrote:
>>
>>> I am trying to transfer DICOM files read in ITK to VTK for a 3D
>>> rendering.
>>>
>>> I have a vector of ImageType::Pointer in ITK:
>>>
>>> typedef	itk::OrientedImage<signed short, 3> ImageType;
>>>
>>> typedef std::vector<ImageType::Pointer> ImageArray;
>>>
>>>
>>> Each element in this vector (ImageArray) contains a slice of DICOM read
>>> in 'signed short' for certain reasons beyond my control.
>>> I would like to transfer this ImageArray to ImageToVTKImageFilter as
>>> follows:
>>>
>>> typedef itk::ImageToVTKImageFilter< ImageType> itkVtkConverter;
>>>
>>> itkVtkConverter::Pointer conv;
>>>
>>>  // QUESTION: HOW TO SUPPLY THE VECTOR ImageArray here?
>>>
>>> conv->SetInput(_**_WHAT_GOES_HERE?_**_);
>>> conv->Update();
>>>
>>> as the data is signed short, I will need to convert it to 'unsigned short' that I can achieve as follows:
>>>
>>> vtkSmartPointer<vtkImageCast> dataCast = vtkSmartPointer<vtkImageCast>::New();
>>> dataCast->SetInput(conv->GetOutput());
>>> dataCast->SetOutputScalarTypeToUnsignedShort();
>>> dataCast->Update();
>>>
>>> finally forwarding this to the vtkVolumeRayCastMapper:
>>>
>>> volumeMapper->SetInput(dataCast->GetOutput());
>>>
>>>
>>>
>>> How to supply the vector ImageArray to ImageToVTKImageFilter?
>>>
>>>
>>>
>>> best regards,
>>>
>>> Divya
>>>
>>>
>>>
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>>
>>
>> --
>> Jothybasu K Selvaraj
>> PhD Student
>> University of Liverpool
>> Liverpool,UK
>>
>>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
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>


-- 
Jothybasu K Selvaraj
PhD Student
University of Liverpool
Liverpool,UK
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