itkLevelSetMotionRegistrationFunction.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 __itkLevelSetMotionRegistrationFunction_h
#define __itkLevelSetMotionRegistrationFunction_h

#include "itkPDEDeformableRegistrationFunction.h"
#include "itkPoint.h"
#include "itkCovariantVector.h"
#include "itkLinearInterpolateImageFunction.h"
#include "itkSmoothingRecursiveGaussianImageFilter.h"

namespace itk
{
template< class TFixedImage, class TMovingImage, class TDisplacementField >
class ITK_EXPORT LevelSetMotionRegistrationFunction:
  public PDEDeformableRegistrationFunction< TFixedImage,
                                            TMovingImage,
                                            TDisplacementField >
{
public:

  typedef LevelSetMotionRegistrationFunction Self;
  typedef PDEDeformableRegistrationFunction< TFixedImage,
                                             TMovingImage, TDisplacementField
                                             > Superclass;

  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(LevelSetMotionRegistrationFunction,
               PDEDeformableRegistrationFunction);

  typedef typename Superclass::MovingImageType    MovingImageType;
  typedef typename Superclass::MovingImagePointer MovingImagePointer;
  typedef typename MovingImageType::SpacingType   MovingSpacingType;

  typedef typename Superclass::FixedImageType    FixedImageType;
  typedef typename Superclass::FixedImagePointer FixedImagePointer;
  typedef typename FixedImageType::IndexType     IndexType;
  typedef typename FixedImageType::SizeType      SizeType;
  typedef typename FixedImageType::SpacingType   SpacingType;

  typedef typename Superclass::DisplacementFieldType DisplacementFieldType;
  typedef typename Superclass::DisplacementFieldTypePointer
  DisplacementFieldTypePointer;

  itkStaticConstMacro(ImageDimension, unsigned
                      int, Superclass::ImageDimension);

  typedef typename Superclass::PixelType        PixelType;
  typedef typename Superclass::RadiusType       RadiusType;
  typedef typename Superclass::NeighborhoodType NeighborhoodType;
  typedef typename Superclass::FloatOffsetType  FloatOffsetType;
  typedef typename Superclass::TimeStepType     TimeStepType;

  typedef double                                                    CoordRepType;
  typedef InterpolateImageFunction< MovingImageType, CoordRepType > InterpolatorType;
  typedef typename InterpolatorType::Pointer                        InterpolatorPointer;
  typedef typename InterpolatorType::PointType                      PointType;
  typedef LinearInterpolateImageFunction< MovingImageType, CoordRepType >
  DefaultInterpolatorType;

  typedef Vector< double, itkGetStaticConstMacro(ImageDimension) > VectorType;
  typedef CovariantVector< double, itkGetStaticConstMacro(ImageDimension) >
  CovariantVectorType;

  typedef SmoothingRecursiveGaussianImageFilter< MovingImageType >
  MovingImageSmoothingFilterType;
  typedef typename MovingImageSmoothingFilterType::Pointer
  MovingImageSmoothingFilterPointer;

  void SetMovingImageInterpolator(InterpolatorType *ptr)
  { m_MovingImageInterpolator = ptr; }

  InterpolatorType * GetMovingImageInterpolator(void)
  { return m_MovingImageInterpolator; }

  virtual TimeStepType ComputeGlobalTimeStep(void *GlobalData) const;

  virtual void * GetGlobalDataPointer() const
  {
    GlobalDataStruct *global = new GlobalDataStruct();

    global->m_SumOfSquaredDifference  = 0.0;
    global->m_NumberOfPixelsProcessed = 0L;
    global->m_SumOfSquaredChange      = 0;
    global->m_MaxL1Norm            = NumericTraits< double >::NonpositiveMin();
    return global;
  }

  virtual void ReleaseGlobalDataPointer(void *GlobalData) const;

  virtual void InitializeIteration();

  virtual PixelType  ComputeUpdate( const NeighborhoodType & neighborhood,
                                    void *globalData,
                                    const FloatOffsetType & offset =
                                      FloatOffsetType(0.0) );

  virtual double GetMetric() const
  { return m_Metric; }

  virtual double GetRMSChange() const
  { return m_RMSChange; }

  virtual void SetAlpha(double);

  virtual double GetAlpha() const;

  virtual void SetIntensityDifferenceThreshold(double);

  virtual double GetIntensityDifferenceThreshold() const;

  virtual void SetGradientMagnitudeThreshold(double);

  virtual double GetGradientMagnitudeThreshold() const;

  virtual void SetGradientSmoothingStandardDeviations(double);

  virtual double GetGradientSmoothingStandardDeviations() const;

  void SetUseImageSpacing(bool);

  bool GetUseImageSpacing() const;

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

  typedef ConstNeighborhoodIterator< FixedImageType >
  FixedImageNeighborhoodIteratorType;

  struct GlobalDataStruct {
    double m_SumOfSquaredDifference;
    SizeValueType m_NumberOfPixelsProcessed;
    double m_SumOfSquaredChange;
    double m_MaxL1Norm;
  };

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

  SpacingType m_FixedImageSpacing;
  PointType   m_FixedImageOrigin;

  MovingImageSmoothingFilterPointer m_MovingImageSmoothingFilter;

  InterpolatorPointer m_MovingImageInterpolator;
  InterpolatorPointer m_SmoothMovingImageInterpolator;

  double m_Alpha;

  double m_GradientMagnitudeThreshold;

  double m_IntensityDifferenceThreshold;

  double m_GradientSmoothingStandardDeviations;

  mutable double        m_Metric;
  mutable double        m_SumOfSquaredDifference;
  mutable SizeValueType m_NumberOfPixelsProcessed;
  mutable double        m_RMSChange;
  mutable double        m_SumOfSquaredChange;

  mutable SimpleFastMutexLock m_MetricCalculationLock;

  bool m_UseImageSpacing;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLevelSetMotionRegistrationFunction.hxx"
#endif

#endif