itkSymmetricForcesDemonsRegistrationFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSymmetricForcesDemonsRegistrationFilter.h,v $
  Language:  C++
  Date:      $Date: 2004/11/04 20:40:37 $
  Version:   $Revision: 1.6 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef _itkSymmetricForcesDemonsRegistrationFilter_h_
#define _itkSymmetricForcesDemonsRegistrationFilter_h_

#include "itkPDEDeformableRegistrationFilter.h"
#include "itkSymmetricForcesDemonsRegistrationFunction.h"

namespace itk {

template<class TFixedImage, class TMovingImage, class TDeformationField>
class ITK_EXPORT SymmetricForcesDemonsRegistrationFilter : 
    public PDEDeformableRegistrationFilter< TFixedImage, TMovingImage,
                                            TDeformationField>
{
public:
  typedef SymmetricForcesDemonsRegistrationFilter    Self;
  typedef PDEDeformableRegistrationFilter<
    TFixedImage, TMovingImage,TDeformationField>    Superclass;
  typedef SmartPointer<Self> Pointer;
  typedef SmartPointer<const Self> ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro( SymmetricForcesDemonsRegistrationFilter, 
                PDEDeformableRegistrationFilter );

  typedef typename Superclass::FixedImageType   FixedImageType;
  typedef typename Superclass::FixedImagePointer  FixedImagePointer;

  typedef typename Superclass::MovingImageType    MovingImageType;
  typedef typename Superclass::MovingImagePointer  MovingImagePointer;
  
  typedef typename Superclass::DeformationFieldType 
  DeformationFieldType;
  typedef typename Superclass::DeformationFieldPointer  
  DeformationFieldPointer;

  typedef typename Superclass::FiniteDifferenceFunctionType
  FiniteDifferenceFunctionType;

  typedef typename FiniteDifferenceFunctionType::TimeStepType  TimeStepType;


  typedef SymmetricForcesDemonsRegistrationFunction<FixedImageType,MovingImageType,
                                     DeformationFieldType>  DemonsRegistrationFunctionType;

  virtual double GetMetric() const;
  virtual const double &GetRMSChange() const;

  virtual void SetIntensityDifferenceThreshold(double);
  virtual double GetIntensityDifferenceThreshold() const;

protected:
  SymmetricForcesDemonsRegistrationFilter();
  ~SymmetricForcesDemonsRegistrationFilter() {}
  void PrintSelf(std::ostream& os, Indent indent) const;

  virtual void InitializeIteration();

  virtual void ApplyUpdate(TimeStepType dt);

private:
  SymmetricForcesDemonsRegistrationFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

};


} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSymmetricForcesDemonsRegistrationFilter.txx"
#endif

#endif

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