itkMorphologicalDistanceTransformImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software 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 itkMorphologicalDistanceTransformImageFilter_h
#define itkMorphologicalDistanceTransformImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkProgressReporter.h"

#include "itkBinaryThresholdImageFilter.h"
#include "itkParabolicErodeImageFilter.h"
#include "itkSqrtImageFilter.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage = TInputImage >
class ITK_EXPORT MorphologicalDistanceTransformImageFilter:
  public ImageToImageFilter< TInputImage,
                             TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(MorphologicalDistanceTransformImageFilter);

  using Self = MorphologicalDistanceTransformImageFilter;
  using Superclass = ImageToImageFilter< TInputImage, TOutputImage >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);

  itkTypeMacro(MorphologicalDistanceTransformImageFilter, ImageToImageFilter);

  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  using InputPixelType = typename TInputImage::PixelType;
  using RealType = typename NumericTraits< InputPixelType >::RealType;
  using ScalarRealType = typename NumericTraits< InputPixelType >::ScalarRealType;
  using OutputPixelType = typename TOutputImage::PixelType;

  using InputImagePointer = typename TInputImage::Pointer;
  using InputImageConstPointer = typename TInputImage::ConstPointer;

  static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
  static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;
  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;

  using RadiusType = typename itk::FixedArray< ScalarRealType, TInputImage::ImageDimension >;
  void Modified() const override;

  itkSetMacro(OutsideValue, InputPixelType);
  itkGetConstReferenceMacro(OutsideValue, InputPixelType);

  void SetUseImageSpacing(bool uis)
  {
    m_Erode->SetUseImageSpacing(uis);
  }

  const bool & GetUseImageSpacing()
  {
    return m_Erode->GetUseImageSpacing();
  }

  itkSetMacro(SqrDist, bool);
  itkGetConstReferenceMacro(SqrDist, bool);
  itkBooleanMacro(SqrDist);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( SameDimension,
                   ( Concept::SameDimension< itkGetStaticConstMacro(InputImageDimension),
                                             itkGetStaticConstMacro(OutputImageDimension) > ) );

  itkConceptMacro( Comparable,
                   ( Concept::Comparable< InputPixelType > ) );

#endif
protected:
  MorphologicalDistanceTransformImageFilter();
  ~MorphologicalDistanceTransformImageFilter() override {}
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void GenerateData(void) override;

  // do everything in the output image type, which should have high precision
  using ThreshType = typename itk::BinaryThresholdImageFilter< InputImageType, OutputImageType >;
  using ErodeType = typename itk::ParabolicErodeImageFilter< OutputImageType, OutputImageType >;
  using SqrtType = typename itk::SqrtImageFilter< OutputImageType, OutputImageType >;
private:
  InputPixelType               m_OutsideValue;
  typename ErodeType::Pointer  m_Erode;
  typename ThreshType::Pointer m_Thresh;
  typename SqrtType::Pointer   m_Sqrt;
  bool                         m_SqrDist;
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMorphologicalDistanceTransformImageFilter.hxx"
#endif

#endif