[ITK] [ITK-users] cannot save transform to file: Can't Create IO object

[Matt McCormick]

Hi Sebastian,

Is this in a plugin? There are significant issues when dealing with
dynamic_cast's of the templates in plugins.

Does building against ITK with this branch checked out help?:

  http://review.source.kitware.com/#/c/21102

Thanks,
Matt

On Mon, May 23, 2016 at 8:42 PM, Sebastian Ordas
<sebastian.ordas at gmail.com> wrote:
> Thanks Matt,
>
> The retrieved transformIO is null
>
> I looked into my ITK 4.9 build and I am trying something like this:
>
> itk::TransformFileWriterTemplate<double>::Pointer writer =
>     itk::TransformFileWriterTemplate<double>::New();
>
> // are .tfm and .txt the right file extensions?
>
> itk::TransformIOFactoryTemplate<double>::TransformIOBasePointer tranformIO =
> itk::TransformIOFactoryTemplate<double>::CreateTransformIO(
> "fiducials_transform.tfm", itk::TransformIOFactoryFileModeType::WriteMode );
>
>   if (tranformIO.IsNull())
>   {
>     MITK_ERROR << "transform IO is null";
>     return;
>   }
>
> writer->SetTransformIO(tranformIO);
>
> writer->SetFileName("fiducials_transform.tfm");
>
> writer->SetInput(transform);
>
> try
>   {
>     writer->Update();
>   }
>   catch (itk::ExceptionObject& e)
>   {
>     MITK_ERROR << "Caught exception: " << e.GetDescription();
>     QMessageBox::information( this, "Save transform", "Could not save
> transform. See error log for details." );
>   }
>
> thank you
> sebastian
>
>
> On 23/05/2016 05:35 p.m., Matt McCormick wrote:
>>
>> Hello Sebastian,
>>
>> By running against ITK with this patch checked out:
>>
>>    http://review.source.kitware.com/#/c/21115/
>>
>> the error message will state what transform IO classes are registered.
>>
>> HTH,
>> Matt
>>
>> On Mon, May 23, 2016 at 4:29 PM, Sebastian Ordas
>> <sebastian.ordas at gmail.com> wrote:
>>>
>>> Hello, I am trying to run the code bellow from my application (using ITK
>>> 4.9)  but I get the following error :
>>>
>>> ERROR: Caught exception: itk::ERROR:
>>> TransformFileWriterTemplate(000000000CD770E0): Can't Create IO object
>>> for file test.tfm
>>>
>>> I am sure that if I test it from a simple test application this should
>>> work,
>>> but I am trying to understand what I am missing from within my project
>>> (maybe some factory not yet registered or even some registration-related
>>> module not yet enabled in cmake?)
>>>
>>> typedef itk::VersorRigid3DTransform< double > TransformType;
>>> TransformType::Pointer trf = TransformType::New();
>>> trf->SetIdentity();
>>>
>>> itk::TransformFileWriterTemplate<double>::Pointer writer =
>>>      itk::TransformFileWriterTemplate<double>::New();
>>>
>>>    writer->SetFileName("test.tfm");
>>>    writer->SetInput(trf);
>>>
>>>    try
>>>    {
>>>      writer->Update();
>>>    }
>>>    catch (itk::ExceptionObject& e)
>>>    {
>>>      std::cerr << "Caught exception: " << e.GetDescription() <<
>>> std::endl;
>>>    }
>>>
>>>
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>
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