rtkADMMWaveletsConjugateGradientOperator.h

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/*=========================================================================
 *
 *  Copyright RTK 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
 *
 *         https://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 rtkADMMWaveletsConjugateGradientOperator_h
#define rtkADMMWaveletsConjugateGradientOperator_h

#include <itkMultiplyImageFilter.h>
#include <itkAddImageFilter.h>

#include "rtkConjugateGradientOperator.h"
#include "rtkBackProjectionImageFilter.h"
#include "rtkForwardProjectionImageFilter.h"
#include "rtkDisplacedDetectorImageFilter.h"

#include "rtkThreeDCircularProjectionGeometry.h"

namespace rtk
{

template <typename TOutputImage>
class ITK_TEMPLATE_EXPORT ADMMWaveletsConjugateGradientOperator : public ConjugateGradientOperator<TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ADMMWaveletsConjugateGradientOperator);

  using Self = ADMMWaveletsConjugateGradientOperator;
  using Superclass = ConjugateGradientOperator<TOutputImage>;
  using Pointer = itk::SmartPointer<Self>;

  itkNewMacro(Self);

  itkTypeMacro(rtkADMMWaveletsConjugateGradientOperator, ConjugateGradientOperator);

  using BackProjectionFilterType = rtk::BackProjectionImageFilter<TOutputImage, TOutputImage>;
  using BackProjectionFilterPointer = typename BackProjectionFilterType::Pointer;

  using ForwardProjectionFilterType = rtk::ForwardProjectionImageFilter<TOutputImage, TOutputImage>;
  using ForwardProjectionFilterPointer = typename ForwardProjectionFilterType::Pointer;

  using MultiplyFilterType = itk::MultiplyImageFilter<TOutputImage>;
  using AddFilterType = itk::AddImageFilter<TOutputImage>;

  using DisplacedDetectorFilterType = rtk::DisplacedDetectorImageFilter<TOutputImage>;

  void
  SetBackProjectionFilter(const BackProjectionFilterPointer _arg);

  void
  SetForwardProjectionFilter(const ForwardProjectionFilterPointer _arg);

  void
  SetGeometry(const ThreeDCircularProjectionGeometry::Pointer _arg);

  itkSetMacro(Beta, float);

  itkSetMacro(DisableDisplacedDetectorFilter, bool);
  itkGetMacro(DisableDisplacedDetectorFilter, bool);

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

  void
  GenerateData() override;

  BackProjectionFilterPointer    m_BackProjectionFilter;
  ForwardProjectionFilterPointer m_ForwardProjectionFilter;

  typename AddFilterType::Pointer               m_AddFilter;
  typename MultiplyFilterType::Pointer          m_MultiplyFilter;
  typename MultiplyFilterType::Pointer          m_ZeroMultiplyProjectionFilter;
  typename MultiplyFilterType::Pointer          m_ZeroMultiplyVolumeFilter;
  typename DisplacedDetectorFilterType::Pointer m_DisplacedDetectorFilter;

  float m_Beta;
  bool  m_DisableDisplacedDetectorFilter;

  void
  VerifyInputInformation() const override
  {}

  void
  GenerateInputRequestedRegion() override;
  void
  GenerateOutputInformation() override;
};
} // namespace rtk


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

#endif