itkLabelImageToLabelMapFilter.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 itkLabelImageToLabelMapFilter_h
#define itkLabelImageToLabelMapFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkLabelMap.h"
#include "itkLabelObject.h"
 
namespace itk
{
template <typename TInputImage,
          typename TOutputImage = LabelMap<LabelObject<typename TInputImage::PixelType, TInputImage::ImageDimension>>>
class ITK_TEMPLATE_EXPORT LabelImageToLabelMapFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LabelImageToLabelMapFilter);
 
  using Self = LabelImageToLabelMapFilter;
  using Superclass = ImageToImageFilter<TInputImage, TOutputImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  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 OutputImagePointer = typename OutputImageType::Pointer;
  using OutputImageConstPointer = typename OutputImageType::ConstPointer;
  using OutputImageRegionType = typename OutputImageType::RegionType;
  using OutputImagePixelType = typename OutputImageType::PixelType;
  using LabelObjectType = typename OutputImageType::LabelObjectType;
  using LengthType = typename LabelObjectType::LengthType;
 
  static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;
  static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
 
  itkNewMacro(Self);
 
  itkOverrideGetNameOfClassMacro(LabelImageToLabelMapFilter);
 
  itkSetMacro(BackgroundValue, OutputImagePixelType);
  itkGetConstMacro(BackgroundValue, OutputImagePixelType);
#ifdef ITK_USE_CONCEPT_CHECKING
  itkConceptMacro(SameDimensionCheck, (Concept::SameDimension<InputImageDimension, OutputImageDimension>));
#endif
 
protected:
  LabelImageToLabelMapFilter();
  ~LabelImageToLabelMapFilter() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  void
  GenerateInputRequestedRegion() override;
 
  void
  EnlargeOutputRequestedRegion(DataObject * itkNotUsed(output)) override;
 
  void
  BeforeThreadedGenerateData() override;
 
  void
  ThreadedGenerateData(const OutputImageRegionType & regionForThread, ThreadIdType threadId) override;
 
  void
  DynamicThreadedGenerateData(const OutputImageRegionType &) override
  {
    itkExceptionMacro("This class requires threadId so it must use classic multi-threading model");
  }
 
  void
  AfterThreadedGenerateData() override;
 
private:
  OutputImagePixelType m_BackgroundValue{};
 
  typename std::vector<OutputImagePointer> m_TemporaryImages{};
}; // end of class
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkLabelImageToLabelMapFilter.hxx"
#endif
 
#endif