itkWatershedRelabeler.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 itkWatershedRelabeler_h
#define itkWatershedRelabeler_h

#include "itkWatershedSegmentTree.h"
#include "itkWatershedSegmenter.h"

namespace itk
{
namespace watershed
{
template< typename TScalar, unsigned int TImageDimension >
class ITK_TEMPLATE_EXPORT Relabeler:
  public ProcessObject
{
public:
  using Self = Relabeler;
  using Superclass = ProcessObject;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);
  itkTypeMacro(WatershedRelabeler, ProcessObject);

  static constexpr unsigned int ImageDimension = TImageDimension;

  using ScalarType = TScalar;
  using ImageType = Image< IdentifierType, TImageDimension >;
  using SegmentTreeType = SegmentTree< ScalarType >;
  using SegmenterType = Segmenter< Image< ScalarType, TImageDimension > >;
  using DataObjectPointer = DataObject::Pointer;

  using DataObjectPointerArraySizeType = ProcessObject::DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx) override;

  void SetInputImage(ImageType *img)
  {
    this->ProcessObject::SetNthInput(0, img);
  }

  ImageType * GetInputImage()
  {
    return itkDynamicCastInDebugMode< ImageType * >
           ( this->ProcessObject::GetInput(0) );
  }

  void SetOutputImage(ImageType *img)
  {
    this->ProcessObject::SetNthOutput(0, img);
  }

  ImageType * GetOutputImage()
  {
    return itkDynamicCastInDebugMode< ImageType * >
           ( this->ProcessObject::GetOutput(0) );
  }

  void SetInputSegmentTree(SegmentTreeType *et)
  {
    this->ProcessObject::SetNthInput(1, et);
  }

  SegmentTreeType * GetInputSegmentTree()
  {
    return itkDynamicCastInDebugMode< SegmentTreeType * >
           ( this->ProcessObject::GetInput(1) );
  }

  void GenerateData() override;

  itkSetClampMacro(FloodLevel, double, 0.0, 1.0);
  itkGetConstMacro(FloodLevel, double);

  void GraftOutput(ImageType *graft);

  void GraftNthOutput(unsigned int idx, ImageType *graft);

protected:
  Relabeler();
  ~Relabeler() override = default;
  Relabeler(const Self &) {}
  void operator=(const Self &) {}
  void PrintSelf(std::ostream & os, Indent indent) const override;

  double m_FloodLevel{0.0};
  void GenerateOutputRequestedRegion(DataObject *output) override;

  void GenerateInputRequestedRegion() override;
};
} // end namespace watershed
} // end namespace itk

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

#endif