itkMeanReciprocalSquareDifferenceImageToImageMetric.h

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 *
 *  Copyright NumFOCUS
 *
 *  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
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 *         https://www.apache.org/licenses/LICENSE-2.0.txt
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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 *  See the License for the specific language governing permissions and
 *  limitations under the License.
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#ifndef itkMeanReciprocalSquareDifferenceImageToImageMetric_h
#define itkMeanReciprocalSquareDifferenceImageToImageMetric_h
 
#include "itkImageToImageMetric.h"
#include "itkPoint.h"
 
namespace itk
{
template <typename TFixedImage, typename TMovingImage>
class ITK_TEMPLATE_EXPORT MeanReciprocalSquareDifferenceImageToImageMetric
  : public ImageToImageMetric<TFixedImage, TMovingImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(MeanReciprocalSquareDifferenceImageToImageMetric);

  using Self = MeanReciprocalSquareDifferenceImageToImageMetric;
  using Superclass = ImageToImageMetric<TFixedImage, TMovingImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(MeanReciprocalSquareDifferenceImageToImageMetric);

  using typename Superclass::TransformType;
  using typename Superclass::TransformPointer;
  using typename Superclass::TransformParametersType;
  using typename Superclass::TransformJacobianType;
  using typename Superclass::InputPointType;
  using typename Superclass::OutputPointType;
 
  using typename Superclass::MeasureType;
  using typename Superclass::DerivativeType;
  using typename Superclass::FixedImageType;
  using typename Superclass::MovingImageType;
  using typename Superclass::FixedImageConstPointer;
  using typename Superclass::MovingImageConstPointer;

  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;

  itkGetConstMacro(Lambda, double);
  itkSetMacro(Lambda, double);

  itkGetConstMacro(Delta, double);
  itkSetMacro(Delta, double);
 
protected:
  MeanReciprocalSquareDifferenceImageToImageMetric();
  ~MeanReciprocalSquareDifferenceImageToImageMetric() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
private:
  double m_Lambda{};
  double m_Delta{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkMeanReciprocalSquareDifferenceImageToImageMetric.hxx"
#endif
 
#endif