[Insight-users] Please help on python mapping.

[Yang Wang]

Hi, all

I am trying to map the DeformableRegistration2.cxx into Python.
However, don't know how to do the following two parts:
(1)    typedef itk::Vector< float, Dimension >    VectorPixelType;
 typedef itk::Image<  VectorPixelType, Dimension > DeformationFieldType;
 typedef itk::DemonsRegistrationFilter<
                               InternalImageType,
                               InternalImageType,
                               DeformationFieldType>   
RegistrationFilterType;
 RegistrationFilterType::Pointer filter = RegistrationFilterType::New();

(2)
class CommandIterationUpdate : public itk::Command
 {
 public:
   typedef  CommandIterationUpdate   Self;
   typedef  itk::Command             Superclass;
   typedef  itk::SmartPointer<CommandIterationUpdate>  Pointer;
   itkNewMacro( CommandIterationUpdate );
 protected:
   CommandIterationUpdate() {};

   typedef itk::Image< float, 2 > InternalImageType;
   typedef itk::Vector< float, 2 >    VectorPixelType;
   typedef itk::Image<  VectorPixelType, 2 > DeformationFieldType;

   typedef itk::DemonsRegistrationFilter<
                               InternalImageType,
                               InternalImageType,
                               DeformationFieldType>   
RegistrationFilterType;

 public:

   void Execute(itk::Object *caller, const itk::EventObject & event)
     {
       Execute( (const itk::Object *)caller, event);
     }

   void Execute(const itk::Object * object, const itk::EventObject & event)
     {
        const RegistrationFilterType * filter =
         dynamic_cast< const RegistrationFilterType * >( object );
       if( typeid( event ) != typeid( itk::IterationEvent ) )
         {
         return;
         }
       std::cout << filter->GetMetric() << std::endl;
     }
 };


CommandIterationUpdate::Pointer observer = CommandIterationUpdate::New();
 filter->AddObserver( itk::IterationEvent(), observer );

**************************************

Thanks in advance for any hint or help!!


Yours,
Casper