ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkMeanSquareRegistrationFunction.h
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00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkMeanSquareRegistrationFunction_h
00019 #define __itkMeanSquareRegistrationFunction_h
00020 
00021 #include "itkPDEDeformableRegistrationFunction.h"
00022 #include "itkPoint.h"
00023 #include "itkLinearInterpolateImageFunction.h"
00024 #include "itkCentralDifferenceImageFunction.h"
00025 
00026 namespace itk
00027 {
00052 template< class TFixedImage, class TMovingImage, class TDisplacementField >
00053 class ITK_EXPORT MeanSquareRegistrationFunction:
00054   public PDEDeformableRegistrationFunction< TFixedImage,
00055                                             TMovingImage, TDisplacementField >
00056 {
00057 public:
00058 
00060   typedef MeanSquareRegistrationFunction Self;
00061   typedef PDEDeformableRegistrationFunction< TFixedImage,
00062                                              TMovingImage, TDisplacementField >       Superclass;
00063   typedef SmartPointer< Self >       Pointer;
00064   typedef SmartPointer< const Self > ConstPointer;
00065 
00067   itkNewMacro(Self);
00068 
00070   itkTypeMacro(MeanSquareRegistrationFunction,
00071                PDEDeformableRegistrationFunction);
00072 
00074   typedef typename Superclass::MovingImageType    MovingImageType;
00075   typedef typename Superclass::MovingImagePointer MovingImagePointer;
00076 
00078   typedef typename Superclass::FixedImageType    FixedImageType;
00079   typedef typename Superclass::FixedImagePointer FixedImagePointer;
00080   typedef typename FixedImageType::IndexType     IndexType;
00081   typedef typename FixedImageType::SizeType      SizeType;
00082   typedef typename FixedImageType::SpacingType   SpacingType;
00083 
00085   typedef typename Superclass::DisplacementFieldType DisplacementFieldType;
00086   typedef typename DisplacementFieldType::PixelType  DisplacementFieldPixelType;
00087   typedef typename Superclass::DisplacementFieldTypePointer
00088   DisplacementFieldTypePointer;
00089 
00091   itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);
00092 
00094   typedef typename Superclass::PixelType        PixelType;
00095   typedef typename Superclass::RadiusType       RadiusType;
00096   typedef typename Superclass::NeighborhoodType NeighborhoodType;
00097   typedef typename Superclass::FloatOffsetType  FloatOffsetType;
00098   typedef typename Superclass::TimeStepType     TimeStepType;
00099 
00101   typedef double                                                          CoordRepType;
00102   typedef InterpolateImageFunction< MovingImageType, CoordRepType >       InterpolatorType;
00103   typedef typename InterpolatorType::Pointer                              InterpolatorPointer;
00104   typedef typename InterpolatorType::PointType                            PointType;
00105   typedef LinearInterpolateImageFunction< MovingImageType, CoordRepType > DefaultInterpolatorType;
00106 
00108   typedef CovariantVector< double, itkGetStaticConstMacro(ImageDimension) > CovariantVectorType;
00109 
00111   typedef CentralDifferenceImageFunction< FixedImageType > GradientCalculatorType;
00112   typedef typename GradientCalculatorType::Pointer         GradientCalculatorPointer;
00113 
00115   void SetMovingImageInterpolator(InterpolatorType *ptr)
00116   { m_MovingImageInterpolator = ptr; }
00117 
00119   InterpolatorType * GetMovingImageInterpolator(void)
00120   { return m_MovingImageInterpolator; }
00121 
00123   virtual TimeStepType ComputeGlobalTimeStep( void *itkNotUsed(GlobalData) ) const
00124   { return m_TimeStep; }
00125 
00128   virtual void * GetGlobalDataPointer() const
00129   {
00130     GlobalDataStruct *global = new GlobalDataStruct();
00131 
00132     return global;
00133   }
00134 
00136   virtual void ReleaseGlobalDataPointer(void *GlobalData) const
00137   { delete (GlobalDataStruct *)GlobalData;  }
00138 
00140   virtual void InitializeIteration();
00141 
00144   virtual PixelType  ComputeUpdate( const NeighborhoodType & neighborhood,
00145                                     void *globalData,
00146                                     const FloatOffsetType & offset = FloatOffsetType(0.0) );
00147 
00148 protected:
00149   MeanSquareRegistrationFunction();
00150   ~MeanSquareRegistrationFunction() {}
00151   void PrintSelf(std::ostream & os, Indent indent) const;
00152 
00154   typedef ConstNeighborhoodIterator< FixedImageType > FixedImageNeighborhoodIteratorType;
00155 
00158   struct GlobalDataStruct {
00159     FixedImageNeighborhoodIteratorType m_FixedImageIterator;
00160   };
00161 private:
00162   MeanSquareRegistrationFunction(const Self &); //purposely not implemented
00163   void operator=(const Self &);                 //purposely not implemented
00165 
00167   SpacingType m_FixedImageSpacing;
00168 
00170   GradientCalculatorPointer m_FixedImageGradientCalculator;
00171 
00173   InterpolatorPointer m_MovingImageInterpolator;
00174 
00176   TimeStepType m_TimeStep;
00177 
00179   double m_DenominatorThreshold;
00180 
00182   double m_IntensityDifferenceThreshold;
00183 };
00184 } // end namespace itk
00185 
00186 #ifndef ITK_MANUAL_INSTANTIATION
00187 #include "itkMeanSquareRegistrationFunction.hxx"
00188 #endif
00189 
00190 #endif
00191