itkPDEDeformableRegistrationFunction.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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.
 *
 *=========================================================================*/
#ifndef __itkPDEDeformableRegistrationFunction_h
#define __itkPDEDeformableRegistrationFunction_h

#include "itkFiniteDifferenceFunction.h"

namespace itk
{
template< class TFixedImage, class TMovingImage, class TDisplacementField >
class ITK_EXPORT PDEDeformableRegistrationFunction:
  public FiniteDifferenceFunction< TDisplacementField >
{
public:
  typedef PDEDeformableRegistrationFunction              Self;
  typedef FiniteDifferenceFunction< TDisplacementField > Superclass;
  typedef SmartPointer< Self >                           Pointer;
  typedef SmartPointer< const Self >                     ConstPointer;

  itkTypeMacro(PDEDeformableRegistrationFunction,
               FiniteDifferenceFunction);

  typedef TMovingImage                           MovingImageType;
  typedef typename MovingImageType::ConstPointer MovingImagePointer;

  typedef TFixedImage                           FixedImageType;
  typedef typename FixedImageType::ConstPointer FixedImagePointer;

  typedef TDisplacementField                      DisplacementFieldType;
  typedef typename DisplacementFieldType::Pointer DisplacementFieldTypePointer;

#ifdef ITKV3_COMPATIBILITY
  typedef TDisplacementField                     DeformationFieldType;
  typedef typename DeformationFieldType::Pointer DeformationFieldTypePointer;
#endif

  void SetMovingImage(const MovingImageType *ptr)
  { m_MovingImage = ptr; }

  const MovingImageType * GetMovingImage(void) const
  { return m_MovingImage; }

  void SetFixedImage(const FixedImageType *ptr)
  { m_FixedImage = ptr; }

  const FixedImageType * GetFixedImage(void) const
  { return m_FixedImage; }

  void SetDisplacementField(DisplacementFieldTypePointer ptr)
  { m_DisplacementField = ptr; }

  DisplacementFieldType * GetDisplacementField(void)
  { return m_DisplacementField; }

#ifdef ITKV3_COMPATIBILITY
  void SetDeformationField(DeformationFieldTypePointer ptr)
  { this->SetDisplacementField(ptr); }

  DeformationFieldType * GetDeformationField(void)
  { return itkDynamicCastInDebugMode<DeformationFieldType *> (this->GetDisplacementField()); }
#endif

  void SetEnergy(double e) { m_Energy = e; }
  double GetEnergy() const { return m_Energy; }
  void SetGradientStep(double e) { m_GradientStep = e; }
  double GetGradientStep() const { return m_GradientStep; }
  void SetNormalizeGradient(bool e) { m_NormalizeGradient = e; }
  bool GetNormalizeGradient() const { return m_NormalizeGradient; }

protected:
  PDEDeformableRegistrationFunction()
  {
    m_MovingImage = NULL;
    m_FixedImage = NULL;
    m_DisplacementField = NULL;
    m_Energy = 0.0;
    m_NormalizeGradient = true;
    m_GradientStep = 1.0;
  }

  ~PDEDeformableRegistrationFunction() {}

  void PrintSelf(std::ostream & os, Indent indent) const
  {
    Superclass::PrintSelf(os, indent);
    os << indent << "MovingImage: ";
    os << m_MovingImage.GetPointer() << std::endl;
    os << indent << "FixedImage: ";
    os << m_FixedImage.GetPointer() << std::endl;
  }

  MovingImagePointer m_MovingImage;

  FixedImagePointer m_FixedImage;

  DisplacementFieldTypePointer m_DisplacementField;

  mutable double m_Energy;

  bool m_NormalizeGradient;

  mutable double m_GradientStep;

private:
  PDEDeformableRegistrationFunction(const Self &); //purposely not implemented
  void operator=(const Self &);                    //purposely not implemented
};
} // end namespace itk

#endif