itkAdvancedNormalizedCorrelationImageToImageMetric.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.
 *  You may obtain a copy of the License at
 *
 *        http://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 itkAdvancedNormalizedCorrelationImageToImageMetric_h
#define itkAdvancedNormalizedCorrelationImageToImageMetric_h
 
#include "itkAdvancedImageToImageMetric.h"
#include <vector>
 
namespace itk
{
 
template <typename TFixedImage, typename TMovingImage>
class ITK_TEMPLATE_EXPORT AdvancedNormalizedCorrelationImageToImageMetric
  : public AdvancedImageToImageMetric<TFixedImage, TMovingImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(AdvancedNormalizedCorrelationImageToImageMetric);

  using Self = AdvancedNormalizedCorrelationImageToImageMetric;
  using Superclass = AdvancedImageToImageMetric<TFixedImage, TMovingImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(AdvancedNormalizedCorrelationImageToImageMetric);

  using typename Superclass::CoordinateRepresentationType;
  using typename Superclass::MovingImageType;
  using typename Superclass::MovingImagePixelType;
  using typename Superclass::MovingImageConstPointer;
  using typename Superclass::FixedImageType;
  using typename Superclass::FixedImageConstPointer;
  using typename Superclass::FixedImageRegionType;
  using typename Superclass::TransformType;
  using typename Superclass::TransformPointer;
  using typename Superclass::InputPointType;
  using typename Superclass::OutputPointType;
  using typename Superclass::TransformJacobianType;
  using typename Superclass::NumberOfParametersType;
  using typename Superclass::InterpolatorType;
  using typename Superclass::InterpolatorPointer;
  using typename Superclass::RealType;
  using typename Superclass::GradientPixelType;
  using typename Superclass::GradientImageType;
  using typename Superclass::GradientImagePointer;
  using typename Superclass::FixedImageMaskType;
  using typename Superclass::FixedImageMaskPointer;
  using typename Superclass::MovingImageMaskType;
  using typename Superclass::MovingImageMaskPointer;
  using typename Superclass::MeasureType;
  using typename Superclass::DerivativeType;
  using typename Superclass::DerivativeValueType;
  using typename Superclass::ParametersType;
  using typename Superclass::FixedImagePixelType;
  using typename Superclass::MovingImageRegionType;
  using typename Superclass::ImageSamplerType;
  using typename Superclass::ImageSamplerPointer;
  using typename Superclass::ImageSampleContainerType;
  using typename Superclass::ImageSampleContainerPointer;
  using typename Superclass::FixedImageLimiterType;
  using typename Superclass::MovingImageLimiterType;
  using typename Superclass::FixedImageLimiterOutputType;
  using typename Superclass::MovingImageLimiterOutputType;
  using typename Superclass::MovingImageDerivativeScalesType;
  using typename Superclass::ThreadInfoType;

  itkStaticConstMacro(FixedImageDimension, unsigned int, FixedImageType::ImageDimension);

  itkStaticConstMacro(MovingImageDimension, unsigned int, MovingImageType::ImageDimension);

  MeasureType
  GetValue(const ParametersType & parameters) const override;

  void
  GetDerivative(const ParametersType & parameters, DerivativeType & derivative) const override;

  void
  GetValueAndDerivativeSingleThreaded(const ParametersType & parameters,
                                      MeasureType &          value,
                                      DerivativeType &       derivative) const;
 
  void
  GetValueAndDerivative(const ParametersType & parameters,
                        MeasureType &          value,
                        DerivativeType &       derivative) const override;
 
protected:
  AdvancedNormalizedCorrelationImageToImageMetric();
  ~AdvancedNormalizedCorrelationImageToImageMetric() override = default;
 
  using Superclass::PrintSelf;


  using typename Superclass::FixedImageIndexType;
  using typename Superclass::FixedImageIndexValueType;
  using typename Superclass::MovingImageIndexType;
  using typename Superclass::FixedImagePointType;
  using typename Superclass::MovingImagePointType;
  using typename Superclass::MovingImageContinuousIndexType;
  using typename Superclass::BSplineInterpolatorType;
  using typename Superclass::MovingImageDerivativeType;
  using typename Superclass::NonZeroJacobianIndicesType;

  void
  UpdateDerivativeTerms(const RealType                     fixedImageValue,
                        const RealType                     movingImageValue,
                        const DerivativeType &             imageJacobian,
                        const NonZeroJacobianIndicesType & nzji,
                        DerivativeType &                   derivativeF,
                        DerivativeType &                   derivativeM,
                        DerivativeType &                   differential) const;

  void
  InitializeThreadingParameters() const override;

  void
  ThreadedGetValueAndDerivative(ThreadIdType threadID) const override;

  void
  AfterThreadedGetValueAndDerivative(MeasureType & value, DerivativeType & derivative) const override;

  static ITK_THREAD_RETURN_FUNCTION_CALL_CONVENTION
  AccumulateDerivativesThreaderCallback(void * arg);
 
private:
  using AccumulateType = typename NumericTraits<MeasureType>::AccumulateType;

  struct MultiThreaderAccumulateDerivativeType
  {
    AdvancedNormalizedCorrelationImageToImageMetric * st_Metric;
 
    AccumulateType        st_sf_N;
    AccumulateType        st_sm_N;
    AccumulateType        st_sfm_smm;
    RealType              st_InvertedDenominator;
    DerivativeValueType * st_DerivativePointer;
  };
 
  struct CorrelationGetValueAndDerivativePerThreadStruct
  {
    SizeValueType  st_NumberOfPixelsCounted;
    AccumulateType st_Sff;
    AccumulateType st_Smm;
    AccumulateType st_Sfm;
    AccumulateType st_Sf;
    AccumulateType st_Sm;
    DerivativeType st_DerivativeF;
    DerivativeType st_DerivativeM;
    DerivativeType st_Differential;
  };
  itkPadStruct(ITK_CACHE_LINE_ALIGNMENT,
               CorrelationGetValueAndDerivativePerThreadStruct,
               PaddedCorrelationGetValueAndDerivativePerThreadStruct);
  itkAlignedTypedef(ITK_CACHE_LINE_ALIGNMENT,
                    PaddedCorrelationGetValueAndDerivativePerThreadStruct,
                    AlignedCorrelationGetValueAndDerivativePerThreadStruct);
  mutable std::vector<AlignedCorrelationGetValueAndDerivativePerThreadStruct>
    m_CorrelationGetValueAndDerivativePerThreadVariables;
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkAdvancedNormalizedCorrelationImageToImageMetric.hxx"
#endif
 
#endif // end #ifndef itkAdvancedNormalizedCorrelationImageToImageMetric_h