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itkSymmetricForcesDemonsRegistrationFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkSymmetricForcesDemonsRegistrationFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-01-27 19:30:16 $
00007   Version:   $Revision: 1.6 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkSymmetricForcesDemonsRegistrationFunction_h
00018 #define __itkSymmetricForcesDemonsRegistrationFunction_h
00019 
00020 #include "itkPDEDeformableRegistrationFunction.h"
00021 #include "itkPoint.h"
00022 #include "itkCovariantVector.h"
00023 #include "itkInterpolateImageFunction.h"
00024 #include "itkLinearInterpolateImageFunction.h"
00025 #include "itkCentralDifferenceImageFunction.h"
00026 
00027 namespace itk {
00028 
00060 template<class TFixedImage, class TMovingImage, class TDeformationField>
00061 class ITK_EXPORT SymmetricForcesDemonsRegistrationFunction : 
00062     public PDEDeformableRegistrationFunction< TFixedImage,
00063                                               TMovingImage, TDeformationField>
00064 {
00065 public:
00066 
00068   typedef SymmetricForcesDemonsRegistrationFunction    Self;
00069   typedef PDEDeformableRegistrationFunction< TFixedImage,
00070                                              TMovingImage, TDeformationField >
00071                                                        Superclass;
00072   typedef SmartPointer<Self>                           Pointer;
00073   typedef SmartPointer<const Self>                     ConstPointer;
00074 
00076   itkNewMacro(Self);
00077 
00079   itkTypeMacro( SymmetricForcesDemonsRegistrationFunction, 
00080                 PDEDeformableRegistrationFunction );
00081 
00083   typedef typename Superclass::MovingImageType     MovingImageType;
00084   typedef typename Superclass::MovingImagePointer  MovingImagePointer;
00085 
00087   typedef typename Superclass::FixedImageType     FixedImageType;
00088   typedef typename Superclass::FixedImagePointer  FixedImagePointer;
00089   typedef typename FixedImageType::IndexType      IndexType;
00090   typedef typename FixedImageType::SizeType       SizeType;
00091   typedef typename FixedImageType::SpacingType    SpacingType;
00092 
00094   typedef typename Superclass::DeformationFieldType    DeformationFieldType;
00095   typedef typename Superclass::DeformationFieldTypePointer   
00096   DeformationFieldTypePointer;
00097 
00099   itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension);
00100 
00102   typedef typename Superclass::PixelType        PixelType;
00103   typedef typename Superclass::RadiusType       RadiusType;
00104   typedef typename Superclass::NeighborhoodType NeighborhoodType;
00105   typedef typename Superclass::FloatOffsetType  FloatOffsetType;
00106   typedef typename Superclass::TimeStepType     TimeStepType;
00107 
00109   typedef double                                     CoordRepType;
00110   typedef InterpolateImageFunction<MovingImageType,CoordRepType>
00111                                                      InterpolatorType;
00112   typedef typename InterpolatorType::Pointer         InterpolatorPointer;
00113   typedef typename InterpolatorType::PointType       PointType;
00114   typedef LinearInterpolateImageFunction<MovingImageType,CoordRepType>
00115                                                      DefaultInterpolatorType;
00116 
00118   typedef CovariantVector<double,itkGetStaticConstMacro(ImageDimension)> CovariantVectorType;
00119 
00121   typedef CentralDifferenceImageFunction<FixedImageType> GradientCalculatorType;
00122   typedef typename GradientCalculatorType::Pointer   GradientCalculatorPointer;
00123 
00125   void SetMovingImageInterpolator( InterpolatorType * ptr )
00126   { m_MovingImageInterpolator = ptr; }
00127 
00129   InterpolatorType * GetMovingImageInterpolator(void)
00130   { return m_MovingImageInterpolator; }
00131 
00133   virtual TimeStepType ComputeGlobalTimeStep(void * itkNotUsed(GlobalData)) const
00134   { return m_TimeStep; }
00135 
00138   virtual void *GetGlobalDataPointer() const
00139     {
00140     GlobalDataStruct *global = new GlobalDataStruct();
00141     global->m_SumOfSquaredDifference  = 0.0;
00142     global->m_NumberOfPixelsProcessed = 0L;
00143     global->m_SumOfSquaredChange      = 0;
00144     return global;
00145     }
00147 
00149   virtual void ReleaseGlobalDataPointer( void *GlobalData ) const;
00150 
00152   virtual void InitializeIteration();
00153 
00156   virtual PixelType  ComputeUpdate(const NeighborhoodType &neighborhood,
00157                                    void *globalData,
00158                                    const FloatOffsetType &offset = FloatOffsetType(0.0));
00159 
00163   virtual double GetMetric() const
00164     { return m_Metric; }
00165 
00167   virtual const double &GetRMSChange() const
00168     { return m_RMSChange; }
00169 
00174   virtual void SetIntensityDifferenceThreshold(double);
00175   virtual double GetIntensityDifferenceThreshold() const;
00177 
00178 protected:
00179   SymmetricForcesDemonsRegistrationFunction();
00180   ~SymmetricForcesDemonsRegistrationFunction() {}
00181   void PrintSelf(std::ostream& os, Indent indent) const;
00182 
00184   typedef ConstNeighborhoodIterator<FixedImageType> FixedImageNeighborhoodIteratorType;
00185 
00188   struct GlobalDataStruct
00189     {
00190     double          m_SumOfSquaredDifference;
00191     unsigned long   m_NumberOfPixelsProcessed;
00192     double          m_SumOfSquaredChange;
00193     };
00194 
00195 private:
00196   SymmetricForcesDemonsRegistrationFunction(const Self&); //purposely not implemented
00197   void operator=(const Self&); //purposely not implemented
00198   
00200   SpacingType                     m_FixedImageSpacing;
00201   PointType                       m_FixedImageOrigin;
00202   double                          m_Normalizer;
00203 
00205   GradientCalculatorPointer       m_FixedImageGradientCalculator;
00206 
00208   InterpolatorPointer             m_MovingImageInterpolator;
00209 
00211   TimeStepType                    m_TimeStep;
00212 
00214   double                          m_DenominatorThreshold;
00215 
00217   double                          m_IntensityDifferenceThreshold;
00218 
00222   mutable double                  m_Metric;
00223   mutable double                  m_SumOfSquaredDifference;
00224   mutable unsigned long           m_NumberOfPixelsProcessed;
00225   mutable double                  m_RMSChange;
00226   mutable double                  m_SumOfSquaredChange;
00227 
00229   mutable SimpleFastMutexLock     m_MetricCalculationLock;
00230 
00231 };
00232 
00233 
00234 } // end namespace itk
00235 
00236 #ifndef ITK_MANUAL_INSTANTIATION
00237 #include "itkSymmetricForcesDemonsRegistrationFunction.txx"
00238 #endif
00239 
00240 #endif
00241 

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