rtkMotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter.h

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 *  Copyright RTK Consortium
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 *  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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 *  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
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#ifndef rtkMotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter_h
#define rtkMotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter_h

#include "rtkFourDConjugateGradientConeBeamReconstructionFilter.h"
#include "rtkMotionCompensatedFourDReconstructionConjugateGradientOperator.h"
#include "rtkWarpProjectionStackToFourDImageFilter.h"
#ifdef RTK_USE_CUDA
#  include "rtkCudaWarpForwardProjectionImageFilter.h"
#  include "rtkCudaWarpBackProjectionImageFilter.h"
#endif

namespace rtk
{
template <typename VolumeSeriesType, typename ProjectionStackType>
class ITK_TEMPLATE_EXPORT MotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter
  : public rtk::FourDConjugateGradientConeBeamReconstructionFilter<VolumeSeriesType, ProjectionStackType>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(MotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter);

  using Self = MotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter;
  using Superclass = FourDConjugateGradientConeBeamReconstructionFilter<VolumeSeriesType, ProjectionStackType>;
  using Pointer = itk::SmartPointer<Self>;
  using ConstPointer = itk::SmartPointer<const Self>;

  using InputImageType = VolumeSeriesType;
  using OutputImageType = VolumeSeriesType;
  using VolumeType = ProjectionStackType;
  using VectorForDVF = itk::CovariantVector<typename VolumeSeriesType::ValueType, VolumeSeriesType::ImageDimension - 1>;

  using ForwardProjectionType = typename Superclass::ForwardProjectionType;
  using BackProjectionType = typename Superclass::BackProjectionType;

  using CPUVolumeSeriesType =
    typename itk::Image<typename VolumeSeriesType::PixelType, VolumeSeriesType::ImageDimension>;
#ifdef RTK_USE_CUDA
  using DVFSequenceImageType =
    typename std::conditional_t<std::is_same_v<VolumeSeriesType, CPUVolumeSeriesType>,
                                itk::Image<VectorForDVF, VolumeSeriesType::ImageDimension>,
                                itk::CudaImage<VectorForDVF, VolumeSeriesType::ImageDimension>>;
  using DVFImageType = typename std::conditional_t<std::is_same_v<VolumeSeriesType, CPUVolumeSeriesType>,
                                                   itk::Image<VectorForDVF, VolumeSeriesType::ImageDimension - 1>,
                                                   itk::CudaImage<VectorForDVF, VolumeSeriesType::ImageDimension - 1>>;
#else
  using DVFSequenceImageType = itk::Image<VectorForDVF, VolumeSeriesType::ImageDimension>;
  using DVFImageType = itk::Image<VectorForDVF, VolumeSeriesType::ImageDimension - 1>;
#endif

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(MotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter);

  void
  SetForwardProjectionFilter(ForwardProjectionType itkNotUsed(_arg)) override
  {
    itkExceptionMacro(<< "ForwardProjection cannot be changed");
  }
  void
  SetBackProjectionFilter(BackProjectionType itkNotUsed(_arg)) override
  {
    itkExceptionMacro(<< "BackProjection cannot be changed");
  }

  void
  SetDisplacementField(const DVFSequenceImageType * DisplacementField);
  void
  SetInverseDisplacementField(const DVFSequenceImageType * InverseDisplacementField);
  typename DVFSequenceImageType::ConstPointer
  GetDisplacementField();
  typename DVFSequenceImageType::ConstPointer
  GetInverseDisplacementField();

  void
  SetSignal(const std::vector<double> signal) override;

  // Sub filters type alias
  using MCProjStackToFourDType = rtk::WarpProjectionStackToFourDImageFilter<VolumeSeriesType, ProjectionStackType>;
  using MCCGOperatorType =
    rtk::MotionCompensatedFourDReconstructionConjugateGradientOperator<VolumeSeriesType, ProjectionStackType>;

  itkSetMacro(UseCudaCyclicDeformation, bool);
  itkGetMacro(UseCudaCyclicDeformation, bool);

protected:
  MotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter();
  ~MotionCompensatedFourDConjugateGradientConeBeamReconstructionFilter() override = default;

  void
  GenerateOutputInformation() override;
  void
  GenerateInputRequestedRegion() override;

  bool m_UseCudaCyclicDeformation;

}; // end of class

} // end namespace rtk

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

#endif