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
 *
 *         http://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 ADMMWaveletsConjugateGradientOperator : public ConjugateGradientOperator< TOutputImage >
{
public:
    typedef ADMMWaveletsConjugateGradientOperator         Self;
    typedef ConjugateGradientOperator< TOutputImage >     Superclass;
    typedef itk::SmartPointer< Self >                     Pointer;

    itkNewMacro(Self)


    itkTypeMacro(rtkADMMWaveletsConjugateGradientOperator, ConjugateGradientOperator)

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

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

    typedef itk::MultiplyImageFilter<TOutputImage>                          MultiplyFilterType;
    typedef itk::AddImageFilter<TOutputImage>                               AddFilterType;

    typedef rtk::DisplacedDetectorImageFilter<TOutputImage>                 DisplacedDetectorFilterType;

    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();
    virtual ~ADMMWaveletsConjugateGradientOperator() ITK_OVERRIDE {}

    void GenerateData() ITK_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;

#if ITK_VERSION_MAJOR<5
    void VerifyInputInformation() ITK_OVERRIDE {}
#else
    void VerifyInputInformation() const ITK_OVERRIDE {}
#endif


    void GenerateInputRequestedRegion() ITK_OVERRIDE;
    void GenerateOutputInformation() ITK_OVERRIDE;

private:
    ADMMWaveletsConjugateGradientOperator(const Self &); //purposely not implemented
    void operator=(const Self &);  //purposely not implemented

};
} //namespace RTK


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

#endif