[vtkusers] Trying to connect ITK - VTK - ITK

[Bc. Michal Srna]

Did it, no error message at all (I use console application).

Here I marked, where the program crashes in file vtkImageImport.cxx, it's on
line 7

1void vtkImageImport::InvokeExecuteInformationCallbacks()
2{
3  if (this->WholeExtentCallback)
4    {
5   tryCatchMacro(
6      this->SetWholeExtent(
7        (this->WholeExtentCallback)(this->CallbackUserData)),
8      "Calling WholeExtentCallback: ");
9   }

2011/4/11 Bill Lorensen <bill.lorensen at gmail.com>

> Put a try/catch around the Update();
>
>
> On Mon, Apr 11, 2011 at 11:16 AM, Bc. Michal Srna <michal at srna.info>wrote:
>
>> Tried, but didn't help.
>>
>> I also tried to use simple example from
>> http://www.itk.org/CourseWare/Training/GettingStarted-II.pdf (slide 18)
>> and tried just to connect simple readed 2D tiff image (via ITK) to the VTK
>> pipeline via ImageToVTKImageFilter like this:
>>
>> typedef itk::Image<unsigned short,2> ImageType;
>> typedef itk::ImageFileReader<ImageType> ReaderType;
>> typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType;
>>
>> ReaderType::Pointer reader= ReaderType::New();
>> ConnectorType::Pointer connector= ConnectorType::New();
>>
>> reader->SetFileName( argv[1]);
>> connector->SetInput( reader->GetOutput() );
>>
>> connector-> Update ();
>>
>> Code runs, no compile errors and when running it crashes on the same spot
>> in file vtkImageImport.cxx just when executing "connector-> Update ()". So
>> the problem is somewhere where executing connection of ITK pipeline to the
>> VTK pipeline.
>>
>> Here is the report of crash:
>>
>> First-chance exception at 0x01e1e219 in test.exe: 0xC0000005: Access
>> violation reading location 0x00000000.
>> Unhandled exception at 0x01e1e219 in test.exe: 0xC0000005: Access
>> violation reading location 0x00000000.
>> The program '[3968] test.exe: Native' has exited with code 0 (0x0).
>>
>>
>>
>>
>> 2011/4/11 Bill Lorensen <bill.lorensen at gmail.com>
>>
>>> Try changing:
>>>
>>>   blend->SetInput(0,connector_ITK_to_VTK_alpha_data2->GetOutput());
>>>  to
>>>   blend->SetInput(1,connector_ITK_to_VTK_alpha_data2->GetOutput());
>>>
>>>
>>> On Mon, Apr 11, 2011 at 10:15 AM, Michal Srna <kositch at seznam.cz> wrote:
>>>
>>>> Hello dear VTK users,
>>>>
>>>> I would like to connect two 3D images from ITK (same dimensions) to VTK
>>>> and blend them using vtkImageBlend. The problem is, that when I run the
>>>> code, it crashes on this part of the code of vtkImageImport.cxx
>>>>
>>>>  if (this->WholeExtentCallback)
>>>>    {
>>>>    tryCatchMacro(
>>>>      this->SetWholeExtent(
>>>> ->        (this->WholeExtentCallback)(this->CallbackUserData)),
>>>>      "Calling WholeExtentCallback: ");
>>>>    }
>>>>
>>>> Here is my corresponding code.  "TransformedImportFilter" and
>>>>  "FixedImportFilter" are outputs of ITKImageFilter, which connects my image
>>>> data from memory into the ITK pipeline:
>>>>
>>>>                          /*connecting ITK to VTK*/
>>>>                                typedef itk::ImageToVTKImageFilter<
>>>> TransformedImageType > ITK_to_VTK_ConnectorType;
>>>>
>>>>                                ITK_to_VTK_ConnectorType::Pointer
>>>> connector_ITK_to_VTK_alpha_data1 = ITK_to_VTK_ConnectorType::New();
>>>>                                ITK_to_VTK_ConnectorType::Pointer
>>>> connector_ITK_to_VTK_alpha_data2 = ITK_to_VTK_ConnectorType::New();
>>>>
>>>>
>>>>  connector_ITK_to_VTK_alpha_data1->SetInput(
>>>> TransformedImportFilter->GetOutput() );
>>>>
>>>>  connector_ITK_to_VTK_alpha_data2->SetInput( FixedImportFilter->GetOutput()
>>>> );
>>>>
>>>>                        /*blending image data*/
>>>>                                vtkSmartPointer<vtkImageBlend> blend =
>>>> vtkSmartPointer<vtkImageBlend>::New();
>>>>                                blend->SetOpacity(0, 0.5);
>>>>                                blend->SetOpacity(1, 0.5);
>>>>
>>>>  blend->SetInput(0,connector_ITK_to_VTK_alpha_data1->GetOutput());
>>>>
>>>>  blend->SetInput(0,connector_ITK_to_VTK_alpha_data2->GetOutput());
>>>>
>>>>                        /*connecting VTK to ITK*/
>>>>                                typedef itk::VTKImageToImageFilter<
>>>> TransformedImageType > VTK_to_ITK_ConnectorType;
>>>>
>>>>                                VTK_to_ITK_ConnectorType::Pointer
>>>> connector_VTK_to_ITK = VTK_to_ITK_ConnectorType::New();
>>>>
>>>>                                connector_VTK_to_ITK->SetInput(
>>>> blend->GetOutput() );
>>>>
>>>>                        /*writing the data into DICOM*/
>>>>                                typedef itk::ImageFileWriter<
>>>> TransformedImageType > WriterType;
>>>>                                WriterType::Pointer writer =
>>>> WriterType::New();
>>>>
>>>>  writer->SetFileName(output_alpha_visualization);
>>>>
>>>>  writer->SetInput(connector_VTK_to_ITK->GetOutput() );
>>>>                                writer->Update();
>>>>
>>>> I think the problem is already in process of importing data from ITK to
>>>> VTK. I am using ITKv4 and VTK 5.6.1 on Windows platform with MVSC++.
>>>>
>>>> I will be happy, if someone will help me.
>>>>
>>>> Best regards,
>>>>
>>>> Pavli
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>>>
>>>
>>
>>
>> --
>> S pozdravem Bc. Michal Srna
>>
>> Fotografické portfolio:
>> http://michalsrna.cz
>>
>
>


-- 
S pozdravem Bc. Michal Srna

Fotografické portfolio:
http://michalsrna.cz
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