selxElastixComponent.h 5.89 KB
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/*=========================================================================
 *
 *  Copyright Leiden University Medical Center, Erasmus University Medical 
 *  Center and contributors
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

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#ifndef selxElastixComponent_h
#define selxElastixComponent_h

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#include "selxComponentBase.h"
#include "selxInterfaces.h"
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#include "itkImageSource.h"

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#include "elxElastixFilter.h"
#include "elxParameterObject.h"
#include "elxTransformixFilter.h"
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#include <string.h>
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#include "selxMacro.h"
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namespace selx
{
  template <int Dimensionality, class TPixel>
  class ElastixComponent : 
    public Implements<
      Accepting< 
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        itkImageFixedInterface<Dimensionality, TPixel>,
        itkImageMovingInterface<Dimensionality, TPixel>
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      >,
      Providing< 
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        itkImageInterface<Dimensionality, TPixel>, 
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        RunRegistrationInterface
      >
    >
  {
  public:
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    selxNewMacro(ElastixComponent, ComponentBase);
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    //itkStaticConstMacro(Dimensionality, unsigned int, Dimensionality);
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    ElastixComponent();
    virtual ~ElastixComponent();
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    typedef typename ComponentBase::CriterionType CriterionType;
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    typedef TPixel PixelType;

    // the in and output image type of the component are chosen to be the same 
    typedef itk::Image<PixelType, Dimensionality> ConnectionImageType;

    // fixed and moving image types are all the same, these aliases can be used to be explicit. 
    typedef itk::Image<PixelType, Dimensionality> FixedImageType;
    typedef itk::Image<PixelType, Dimensionality> MovingImageType;

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    typedef typename ConnectionImageType::Pointer ItkImagePointer;

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    typedef elastix::ElastixFilter< FixedImageType, MovingImageType > ElastixFilterType;
    typedef elastix::ParameterObject elxParameterObjectType;
    typedef elxParameterObjectType::Pointer elxParameterObjectPointer;
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    typedef elastix::TransformixFilter<FixedImageType> TransformixFilterType;

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    typedef itk::ResampleImageFilter<MovingImageType, ConnectionImageType> ResampleFilterType;

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    virtual int Set(itkImageFixedInterface<Dimensionality, TPixel>*) override;
    virtual int Set(itkImageMovingInterface<Dimensionality, TPixel>*) override;
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    virtual ItkImagePointer GetItkImage() override;
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    virtual void RunRegistration() override;

    virtual bool MeetsCriterion(const CriterionType &criterion) override;
    static const char * GetDescription() { return "Elastix Component"; };
  private:
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    typename ElastixFilterType::Pointer m_elastixFilter;
    typename TransformixFilterType::Pointer m_transformixFilter;
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    //selxParameterObjectPointer m_ParameterObject;
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    ItkImagePointer m_OutputImage;
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  protected:
    /* The following struct returns the string name of computation type */
    /* default implementation */

    static inline const std::string GetTypeNameString()
    {
      itkGenericExceptionMacro(<< "Unknown ScalarType" << typeid(TPixel).name());
      // TODO: provide the user instructions how to enable the compilation of the component with the required template types (if desired)
      // We might define an exception object that can communicate various error messages: for simple user, for developer user, etc
    }

    static inline const std::string GetPixelTypeNameString()
    {
      itkGenericExceptionMacro(<< "Unknown PixelType" << typeid(TPixel).name());
      // TODO: provide the user instructions how to enable the compilation of the component with the required template types (if desired)
      // We might define an exception object that can communicate various error messages: for simple user, for developer user, etc
    }

  };

  // unfortunately partial specialization of member functions is not allowed, without partially specializing the entire class.

  /*
  template <int Dimensionality>
  class ElastixComponent < Dimensionality, double >
  {
    static inline const std::string GetPixelTypeNameString();
  };

  template <int Dimensionality>
  inline const std::string
    ElastixComponent<Dimensionality, double>
    ::GetPixelTypeNameString()
  {
    return std::string("double");
  }
  */

  template <>
  inline const std::string
    ElastixComponent<2, float>
    ::GetPixelTypeNameString()
  {
    return std::string("float");
  }


  template <>
  inline const std::string
    ElastixComponent<2, double>
    ::GetPixelTypeNameString()
  {
    return std::string("double");
  }

  template <>
  inline const std::string
    ElastixComponent<3, float>
    ::GetPixelTypeNameString()
  {
    return std::string("float");
  }

  template <>
  inline const std::string
    ElastixComponent<3, double>
    ::GetPixelTypeNameString()
  {
    return std::string("double");
  }
  template <>
  inline const std::string
    ElastixComponent<2, float>
    ::GetTypeNameString()
  {
    return std::string("2_float");
  }

  template <>
  inline const std::string
    ElastixComponent<2, double>
    ::GetTypeNameString()
  {
    return std::string("2_double");
  }

  template <>
  inline const std::string
    ElastixComponent<3,float>
    ::GetTypeNameString()
  {
    return std::string("3_float");
  }
  
  template <>
  inline const std::string
    ElastixComponent<3,double>
    ::GetTypeNameString()
  {
    return std::string("3_double");
  }
} //end namespace selx
#ifndef ITK_MANUAL_INSTANTIATION
#include "selxElastixComponent.hxx"
#endif
#endif // #define GDOptimizer3rdPartyComponent_h