itkIsolatedWatershedImageFilter.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 itkIsolatedWatershedImageFilter_h
#define itkIsolatedWatershedImageFilter_h

#include "itkWatershedImageFilter.h"
#include "itkGradientMagnitudeImageFilter.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_EXPORT IsolatedWatershedImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(IsolatedWatershedImageFilter);

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

  itkNewMacro(Self);

  itkTypeMacro(IsolatedWatershedImageFilter,
               ImageToImageFilter);

  using InputImageType = TInputImage;
  using InputImagePointer = typename InputImageType::Pointer;
  using InputImageConstPointer = typename InputImageType::ConstPointer;
  using InputImageRegionType = typename InputImageType::RegionType;
  using InputImagePixelType = typename InputImageType::PixelType;
  using IndexType = typename InputImageType::IndexType;
  using SizeType = typename InputImageType::SizeType;

  using OutputImageType = TOutputImage;
  using OutputImagePointer = typename OutputImageType::Pointer;
  using OutputImageRegionType = typename OutputImageType::RegionType;
  using OutputImagePixelType = typename OutputImageType::PixelType;

  using RealPixelType = typename NumericTraits<InputImagePixelType>::RealType;
  using RealImageType = Image<RealPixelType, TInputImage::ImageDimension>;

  using WatershedType = WatershedImageFilter< RealImageType >;
  using GradientMagnitudeType = GradientMagnitudeImageFilter< InputImageType, RealImageType >;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  itkSetMacro(Seed1, IndexType);
  itkGetConstMacro(Seed1, IndexType);

  itkSetMacro(Seed2, IndexType);
  itkGetConstMacro(Seed2, IndexType);

  itkSetMacro(Threshold, double);
  itkGetConstMacro(Threshold, double);

  itkSetMacro(IsolatedValueTolerance, double);
  itkGetConstMacro(IsolatedValueTolerance, double);

  itkSetMacro(UpperValueLimit, double);
  itkGetConstMacro(UpperValueLimit, double);

  itkSetMacro(ReplaceValue1, OutputImagePixelType);
  itkGetConstMacro(ReplaceValue1, OutputImagePixelType);
  itkSetMacro(ReplaceValue2, OutputImagePixelType);
  itkGetConstMacro(ReplaceValue2, OutputImagePixelType);

  itkGetConstMacro(IsolatedValue, double);

protected:
  IsolatedWatershedImageFilter();
  ~IsolatedWatershedImageFilter() override = default;
  IndexType m_Seed1;
  IndexType m_Seed2;

  OutputImagePixelType m_ReplaceValue1;
  OutputImagePixelType m_ReplaceValue2;

  typename GradientMagnitudeType::Pointer m_GradientMagnitude;

  typename WatershedType::Pointer m_Watershed;

  double m_Threshold;
  double m_IsolatedValue;
  double m_IsolatedValueTolerance;
  double m_UpperValueLimit;

  // Override since the filter needs all the data for the algorithm
  void GenerateInputRequestedRegion() override;

  // Override since the filter produces the entire dataset
  void EnlargeOutputRequestedRegion(DataObject *output) override;

  void VerifyInputInformation() ITKv5_CONST override;
  void GenerateData() override;
};
} // end namespace itk

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

#endif