itkGradientDifferenceImageToImageMetric2.h

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 *  Copyright UMC Utrecht and contributors
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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/*=========================================================================
 
  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkGradientDifferenceImageToImageMetric2.h,v $
  Language:  C++
  Date:      $Date: 2011-29-04 14:33 $
  Version:   $Revision: 2.0 $
 
  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 __itkGradientDifferenceImageToImageMetric2_h
#define __itkGradientDifferenceImageToImageMetric2_h
 
#include "itkAdvancedImageToImageMetric.h"
 
#include "itkSobelOperator.h"
#include "itkNeighborhoodOperatorImageFilter.h"
#include "itkPoint.h"
#include "itkCastImageFilter.h"
#include "itkResampleImageFilter.h"
#include "itkOptimizer.h"
#include "itkAdvancedCombinationTransform.h"
#include "itkAdvancedRayCastInterpolateImageFunction.h"
 
namespace itk
{
template< class TFixedImage, class TMovingImage >
class GradientDifferenceImageToImageMetric :
  public AdvancedImageToImageMetric< TFixedImage, TMovingImage >
{
public:
 
  typedef GradientDifferenceImageToImageMetric                    Self;
  typedef AdvancedImageToImageMetric< TFixedImage, TMovingImage > Superclass;
 
  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;
 
  itkNewMacro( Self );
 
  itkTypeMacro( GradientDifferenceImageToImageMetric, ImageToImageMetric );
 
  #if defined( _MSC_VER ) && ( _MSC_VER == 1300 )
  typedef double RealType;
  #else
  typedef typename Superclass::RealType RealType;
  #endif
 
  typedef typename Superclass::TransformType           TransformType;
  typedef typename TransformType::ScalarType           ScalarType;
  typedef typename Superclass::TransformPointer        TransformPointer;
  typedef typename Superclass::TransformParametersType TransformParametersType;
  typedef typename Superclass::TransformJacobianType   TransformJacobianType;
  typedef typename Superclass::InterpolatorType        InterpolatorType;
  typedef typename InterpolatorType::Pointer           InterpolatorPointer;
  typedef typename Superclass::MeasureType             MeasureType;
  typedef typename Superclass::DerivativeType          DerivativeType;
  typedef typename Superclass::FixedImageType          FixedImageType;
  typedef typename Superclass::MovingImageType         MovingImageType;
  typedef typename Superclass::FixedImageConstPointer  FixedImageConstPointer;
  typedef typename Superclass::MovingImageConstPointer MovingImageConstPointer;
  typedef typename TFixedImage::PixelType              FixedImagePixelType;
  typedef typename TMovingImage::PixelType             MovedImagePixelType;
  typedef typename MovingImageType::RegionType         MovingImageRegionType;
  typedef typename itk::Optimizer                      OptimizerType;
  typedef typename OptimizerType::ScalesType           ScalesType;
 
  itkStaticConstMacro( FixedImageDimension, unsigned int,
    FixedImageType::ImageDimension );
  itkStaticConstMacro( MovedImageDimension, unsigned int,
    MovingImageType::ImageDimension );
 
  typedef typename itk::AdvancedCombinationTransform< ScalarType, FixedImageDimension >
    CombinationTransformType;
  typedef typename CombinationTransformType::Pointer CombinationTransformPointer;
  typedef itk::Image< FixedImagePixelType, itkGetStaticConstMacro( FixedImageDimension ) >
    TransformedMovingImageType;
  typedef itk::ResampleImageFilter< MovingImageType, TransformedMovingImageType >
    TransformMovingImageFilterType;
  typedef typename itk::AdvancedRayCastInterpolateImageFunction<
    MovingImageType, ScalarType >             RayCastInterpolatorType;
  typedef typename RayCastInterpolatorType::Pointer RayCastInterpolatorPointer;
  typedef itk::Image< RealType, itkGetStaticConstMacro( FixedImageDimension ) >
    FixedGradientImageType;
  typedef itk::CastImageFilter< FixedImageType, FixedGradientImageType >
    CastFixedImageFilterType;
  typedef typename CastFixedImageFilterType::Pointer CastFixedImageFilterPointer;
  typedef typename FixedGradientImageType::PixelType FixedGradientPixelType;
  typedef itk::Image< RealType, itkGetStaticConstMacro( MovedImageDimension ) >
    MovedGradientImageType;
  typedef itk::CastImageFilter< TransformedMovingImageType, MovedGradientImageType >
    CastMovedImageFilterType;
  typedef typename CastMovedImageFilterType::Pointer CastMovedImageFilterPointer;
  typedef typename MovedGradientImageType::PixelType MovedGradientPixelType;
 
  void GetDerivative( const TransformParametersType & parameters,
    DerivativeType  & derivative ) const override;
 
  MeasureType GetValue( const TransformParametersType & parameters ) const override;
 
  void GetValueAndDerivative( const TransformParametersType & parameters,
    MeasureType & Value, DerivativeType & derivative ) const override;
 
  void Initialize( void ) override;
 
  void WriteGradientImagesToFiles( void ) const;
 
  itkSetMacro( Scales, ScalesType );
  itkGetConstReferenceMacro( Scales, ScalesType );
 
  itkSetMacro( DerivativeDelta, double );
  itkGetConstReferenceMacro( DerivativeDelta, double );
 
protected:
 
  GradientDifferenceImageToImageMetric();
  ~GradientDifferenceImageToImageMetric() override {}
  void PrintSelf( std::ostream & os, Indent indent ) const override;
 
  void ComputeMovedGradientRange( void ) const;
 
  void ComputeVariance( void ) const;
 
  MeasureType ComputeMeasure( const TransformParametersType & parameters,
    const double * subtractionFactor ) const;
 
  typedef NeighborhoodOperatorImageFilter<
    FixedGradientImageType, FixedGradientImageType > FixedSobelFilter;
 
  typedef NeighborhoodOperatorImageFilter<
    MovedGradientImageType, MovedGradientImageType > MovedSobelFilter;
 
private:
 
  GradientDifferenceImageToImageMetric( const Self & ); // purposely not implemented
  void operator=( const Self & );                       // purposely not implemented
 
  mutable MovedGradientPixelType m_Variance[ FixedImageDimension ];
 
  mutable MovedGradientPixelType m_MinMovedGradient[ MovedImageDimension ];
  mutable MovedGradientPixelType m_MaxMovedGradient[ MovedImageDimension ];
 
  mutable FixedGradientPixelType m_MinFixedGradient[ FixedImageDimension ];
  mutable FixedGradientPixelType m_MaxFixedGradient[ FixedImageDimension ];
 
  typename TransformMovingImageFilterType::Pointer m_TransformMovingImageFilter;
 
  CastFixedImageFilterPointer m_CastFixedImageFilter;
 
  SobelOperator< FixedGradientPixelType,
  itkGetStaticConstMacro( FixedImageDimension ) >
  m_FixedSobelOperators[ FixedImageDimension ];
 
  typename FixedSobelFilter::Pointer m_FixedSobelFilters[ itkGetStaticConstMacro
    ( FixedImageDimension ) ];
 
  ZeroFluxNeumannBoundaryCondition< MovedGradientImageType > m_MovedBoundCond;
  ZeroFluxNeumannBoundaryCondition< FixedGradientImageType > m_FixedBoundCond;
 
  CastMovedImageFilterPointer m_CastMovedImageFilter;
 
  SobelOperator< MovedGradientPixelType,
  itkGetStaticConstMacro( MovedImageDimension ) >
  m_MovedSobelOperators[ MovedImageDimension ];
 
  typename MovedSobelFilter::Pointer m_MovedSobelFilters[ itkGetStaticConstMacro
    ( MovedImageDimension ) ];
 
  ScalesType                  m_Scales;
  double                      m_DerivativeDelta;
  double                      m_Rescalingfactor;
  CombinationTransformPointer m_CombinationTransform;
 
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkGradientDifferenceImageToImageMetric2.hxx"
#endif
 
#endif