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

Sebastian Ordas sebastian.ordas at gmail.com
Thu May 26 16:08:26 EDT 2016 

thank you all. I will let you know if I can apply the same approach

Sebastian

On 26/05/2016 01:36 p.m., Andras Lasso wrote:
> You can have a look at the workaround that has been implemented in 3D Slicer:
> https://github.com/Slicer/Slicer/commit/12743c6fcebb67ff9b22319cbe52a322a3738134
>
> Some more background information:
> http://slicer-devel.65872.n3.nabble.com/Empty-deformable-transforms-with-Mac-build-td4036248.html
>
> I think it's unacceptable in the long term that dynamic_cast is broken for ITK transform objects but at least we have a workaround for now. It would be nice if somebody could implement a proper solution.
>
> Andras
>
> -----Original Message-----
> From: Community [mailto:community-bounces at itk.org] On Behalf Of Lowekamp, Bradley (NIH/NLM/LHC) [C]
> Sent: May 26, 2016 8:32 AM
> To: Sebastian Ordas <sebastian.ordas at gmail.com>
> Cc: insight-users at itk.org
> Subject: Re: [ITK] [ITK-users] cannot save transform to file: Can't Create IO object
>
> Hello,
>
> That branch makes some improvements, but there really does need a redesign of a few key initializations and shared library policies to work correctly.
>
> Brad
>
>> On May 25, 2016, at 6:38 PM, Sebastian Ordas <sebastian.ordas at gmail.com> wrote:
>>
>> Yes, this is within a plugin in a very complex framework (MITK)
>>
>> I will try to use that ITK branch but will take some time. Before that, I will try to do the save/load functionality from a MITK module.
>>
>> Anyway, I will share your hint with the MITK team and come back to the
>> ITK list
>>
>> thank you,
>>
>> sebastian
>>
>>
>> On 25/05/2016 12:38 a.m., Matt McCormick wrote:
>>> 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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