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

[Divya Rathore]

Somehow, populating objects of various VTK classes with C/C++ type
arrays/vectors has always scared me. I found it very easy to miss one thing
or the other. I shall try that once again, nonetheless.

I will try to feed an object of vtkImageData (
http://www.vtk.org/doc/release/5.8/html/a00911.html) with the slices that
ITK has read and put in a vector for me.

Thanks for the suggestion, Jothy.

best regards,
Divya


On Wed, Oct 19, 2011 at 3:59 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:

> 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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>>>>
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>>>>
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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:
>> http://www.vtk.org/mailman/listinfo/vtkusers
>>
>>
>
>
> --
> Jothybasu K Selvaraj
> PhD Student
> University of Liverpool
> Liverpool,UK
>
>
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