itkWatershedEquivalenceRelabeler.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://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 itkWatershedEquivalenceRelabeler_h
#define itkWatershedEquivalenceRelabeler_h
 
#include "itkWatershedSegmenter.h"
 
namespace itk::watershed
{
template <typename TScalar, unsigned int TImageDimension>
class ITK_TEMPLATE_EXPORT EquivalenceRelabeler : public ProcessObject
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(EquivalenceRelabeler);

  static constexpr unsigned int ImageDimension = TImageDimension;

  using ImageType = Image<IdentifierType, TImageDimension>;
  using Self = EquivalenceRelabeler;
  using Superclass = ProcessObject;
  using ScalarType = TScalar;
  using EquivalencyTableType = EquivalencyTable;
  using SegmenterType = Segmenter<Image<ScalarType, TImageDimension>>;
  using DataObjectPointer = DataObject::Pointer;

  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
  itkNewMacro(Self);
  itkOverrideGetNameOfClassMacro(EquivalenceRelabeler);
  void
  SetInputImage(ImageType * img)
  {
    this->ProcessObject::SetNthInput(0, img);
  }
  const ImageType *
  GetInputImage()
  {
    return static_cast<ImageType *>(this->ProcessObject::GetInput(0));
  }

  void
  SetOutputImage(ImageType * img)
  {
    this->ProcessObject::SetNthOutput(0, img);
  }
 
  typename ImageType::Pointer
  GetOutputImage()
  {
    return static_cast<ImageType *>(this->ProcessObject::GetOutput(0));
  }

  void
  SetEquivalencyTable(EquivalencyTableType * et)
  {
    this->ProcessObject::SetNthInput(1, et);
  }
 
  EquivalencyTableType::Pointer
  GetEquivalencyTable()
  {
    return static_cast<EquivalencyTableType *>(this->ProcessObject::GetInput(1));
  }

  void
  GenerateData() override;

  using DataObjectPointerArraySizeType = ProcessObject::DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  DataObjectPointer
  MakeOutput(DataObjectPointerArraySizeType idx) override;
 
protected:
  EquivalenceRelabeler()
  {
    const typename ImageType::Pointer img = static_cast<ImageType *>(this->MakeOutput(0).GetPointer());
    this->SetNumberOfRequiredOutputs(1);
    this->ProcessObject::SetNthOutput(0, img.GetPointer());
  }
 
  ~EquivalenceRelabeler() override = default;
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  void
  GenerateOutputRequestedRegion(DataObject * output) override;
 
  void
  GenerateInputRequestedRegion() override;
};
} // namespace itk::watershed
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkWatershedEquivalenceRelabeler.hxx"
#endif
 
#endif