itkMorphologicalOpeningFeatureGenerator.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    itkMorphologicalOpeningFeatureGenerator.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef itkMorphologicalOpeningFeatureGenerator_h
#define itkMorphologicalOpeningFeatureGenerator_h

#include "itkFeatureGenerator.h"
#include "itkImage.h"
#include "itkImageSpatialObject.h"
#include "itkBinaryThresholdImageFilter.h"
#include "itkVotingBinaryHoleFillFloodingImageFilter.h"
#include "itkBinaryBallStructuringElement.h"
#include "itkBinaryMorphologicalOpeningImageFilter.h"
#include "itkCastImageFilter.h"

namespace itk
{

template <unsigned int NDimension>
class ITK_TEMPLATE_EXPORT MorphologicalOpeningFeatureGenerator : public FeatureGenerator<NDimension>
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(MorphologicalOpeningFeatureGenerator);

  using Self = MorphologicalOpeningFeatureGenerator;
  using Superclass = FeatureGenerator<NDimension>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro(Self);

  itkTypeMacro(MorphologicalOpeningFeatureGenerator, FeatureGenerator);

  static constexpr unsigned int Dimension = NDimension;

  using InputPixelType = signed short;
  using InputImageType = Image< InputPixelType, Dimension >;
  using InputImageSpatialObjectType = ImageSpatialObject< NDimension, InputPixelType >;
  using InputImageSpatialObjectPointer = typename InputImageSpatialObjectType::Pointer;
  using SpatialObjectType = typename Superclass::SpatialObjectType;

  using ProcessObject::SetInput;
  void SetInput( const SpatialObjectType * input );
  const SpatialObjectType * GetInput() const;

  const SpatialObjectType * GetFeature() const;

  itkSetMacro( LungThreshold, InputPixelType );
  itkGetMacro( LungThreshold, InputPixelType );

protected:
  MorphologicalOpeningFeatureGenerator();
  ~MorphologicalOpeningFeatureGenerator() override;
  void PrintSelf(std::ostream& os, Indent indent) const override;

  void  GenerateData () override;

private:
  using InternalPixelType = unsigned char;
  using InternalImageType = Image< InternalPixelType, Dimension >;

  using OutputPixelType = float;
  using OutputImageType = Image< OutputPixelType, Dimension >;

  using OutputImageSpatialObjectType = ImageSpatialObject< NDimension, OutputPixelType >;

  using ThresholdFilterType = BinaryThresholdImageFilter<
    InputImageType, InternalImageType >;
  using ThresholdFilterPointer = typename ThresholdFilterType::Pointer;

  using KernelType = BinaryBallStructuringElement< InternalPixelType, Dimension >;
  using OpenningFilterType = BinaryMorphologicalOpeningImageFilter<
    InternalImageType, InternalImageType, KernelType >;
  using OpenningFilterPointer = typename OpenningFilterType::Pointer;

  using VotingHoleFillingFilterType = VotingBinaryHoleFillFloodingImageFilter<
    InternalImageType, InternalImageType >;
  using VotingHoleFillingFilterPointer = typename VotingHoleFillingFilterType::Pointer;

  using CastingFilterType = CastImageFilter<
    InternalImageType, OutputImageType >;
  using CastingFilterPointer = typename CastingFilterType::Pointer;


  ThresholdFilterPointer                m_ThresholdFilter;
  OpenningFilterPointer                 m_OpenningFilter;
  VotingHoleFillingFilterPointer        m_VotingHoleFillingFilter;
  CastingFilterPointer                  m_CastingFilter;

  InputPixelType                        m_LungThreshold;
};

} // end namespace itk

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

#endif