[Insight-users] Problem with CenteredTransformInitializer

[Karthik Krishnan]

Yes, it appears to use some typedefs such as OffsetType specific to
itk::MatrixOffsetTransformBase. Sadly, itk::TranslationTransform etc aren't
derived from itk::MatrixOffsetTransformBase.

Try to add the line

  typedef OutputVectorType OffsetType;

to itk::TranslationTransform and see if it works for you. If so, please send
us the patch.

thanks

On Mon, Nov 9, 2009 at 1:23 PM, Lodron, Gerald <Gerald.Lodron at joanneum.at>wrote:

>
> I am not sure if i understand this CenteredTransformInitializer class, can
> anyone explain me why itk::CenteredTransformInitializer does work for
> itk::AffineTransform but not for itk::TranslationTransform or
> itk::ScaleTransform?
>
> Maybe it is a bug?
>
> Best regards!
>
>
>
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: Luis Ibanez [mailto:luis.ibanez at kitware.com]
> Gesendet: Montag, 09. November 2009 01:25
> An: Lodron, Gerald
> Cc: Insight users (insight-users at itk.org)
> Betreff: Re: [Insight-users] Problem with CenteredTransformInitializer
>
> Hi Gerald,
>
> Please post to the mailing list the compilation error that
> you get with this code.
>
> It will make a lot easier for us to advise you if we can
> see the error message.
>
>
> Also,
> please note that the following construction is incorrect:
>
>   RegistrationType * m_Registration = RegistrationType::New();
>
> It should be:
>
>   RegistrationType::Pointer  m_Registration = RegistrationType::New();
>
>
>
> along the same lines, the statement:
>
> TransformType* m_Transformation =
>     itk::AffineTransform<double, VImageDimension>::New();
>
> should be
>
> TransformType::Pointer m_Transformation =
>     itk::AffineTransform<double, VImageDimension>::New();
>
>
> If you don't assign a newly created ITK object to a SmartPointer,
> the object will be destroyed by the next line in the code.
>
> If you are getting run-time errors, this misuse of the New() method
> may explain what is happening with your program at run-time.
> Introducing a proper use of SmartPointers may fix the problem.
>
> ---
>
> For more information about the use of SmartPointers in ITK, please
> read the introductory chapters of the ITK Software Guide:
>
>          http://www.itk.org/ItkSoftwareGuide.pdf
>
> and the Tutorials:
>
>           http://www.itk.org/ITK/help/tutorials.html
>
> in particular:
> http://www.itk.org/CourseWare/Training/GettingStarted-I.pdf
>
>
>
>
>    Regards,
>
>
>           Luis
>
>
> -----------------------------------------------------------
> On Fri, Nov 6, 2009 at 6:09 AM, Lodron, Gerald
> <Gerald.Lodron at joanneum.at> wrote:
> >
> > Hello
> >
> > I try to make a rigid 3 d registration of two singed short images, i
> always get a compiler error when i want to use the
> CenteredTransformInitializer, here is my code
> >
> >
> > template <class TPixelSource=signed short,class TPixelTarget=signed
> short, unsigned int VImageDimension=3>
> >
> >        typedef itk::Image< TPixelTarget, VImageDimension >
>       TargetImageType;
> >        typedef itk::Image< TPixelSource, VImageDimension >
>       SourceImageType;
> >        typedef float
>               InternalPixelType;
> >        typedef itk::Image< InternalPixelType, VImageDimension >
>      InternalImageType;
> >
> >        typedef
> itk::MultiResolutionImageRegistrationMethod<InternalImageType,
> InternalImageType >              RegistrationType;
> >        typedef typename RegistrationType::TransformType
>      TransformType;
> >        typedef itk::CenteredTransformInitializer<TransformType,
> TargetImageType, SourceImageType >             InitializerType;
> >
> >        RegistrationType*       m_Registration = RegistrationType::New();
> >
> >        TransformType* m_Transformation = itk::AffineTransform<double,
> VImageDimension>::New();
> >
> >        m_Registration->SetTransform(m_Transformation);
> >
> >        InitializerType* m_InitTransform = InitializerType::New();
> >        m_InitTransform->SetTransform(   m_Transformation ); //exception
> >
> >
> > Would be great if anyone could give me a hint,
> >
> > Best regards
> > _____________________________________
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> >
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> >
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> >
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
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_________________________________
Karthik Krishnan
R&D Engineer,
Kitware Inc.
Ph: +1 5188814919, +91 9538477060
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