itkLabelContourImageFilter.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 itkLabelContourImageFilter_h
#define itkLabelContourImageFilter_h
 
#include "itkInPlaceImageFilter.h"
#include "itkScanlineFilterCommon.h"
#include <vector>
 
namespace itk
{
 
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT LabelContourImageFilter
  : public InPlaceImageFilter<TInputImage, TOutputImage>
  , protected ScanlineFilterCommon<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LabelContourImageFilter);

  using Self = LabelContourImageFilter;
  using Superclass = InPlaceImageFilter<TInputImage, TOutputImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
  using Superclass::Register;
  using Superclass::UnRegister;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(LabelContourImageFilter);
 
  static constexpr unsigned int ImageDimension = TOutputImage::ImageDimension;

  using InputImageType = TInputImage;
  using InputImagePointer = typename InputImageType::Pointer;
  using InputIndexType = typename InputImageType::IndexType;
  using InputSizeType = typename InputImageType::SizeType;
  using InputOffsetType = typename InputImageType::OffsetType;
  using InputImagePixelType = typename InputImageType::PixelType;
  using OffsetValueType = typename InputImageType::OffsetValueType;
  using InputPixelType = typename InputImageType::PixelType;
 
  using OutputImageType = TOutputImage;
  using OutputImagePointer = typename OutputImageType::Pointer;
  using OutputRegionType = typename OutputImageType::RegionType;
  using OutputIndexType = typename OutputImageType::IndexType;
  using OutputSizeType = typename OutputImageType::SizeType;
  using OutputOffsetType = typename OutputImageType::OffsetType;
  using OutputImagePixelType = typename OutputImageType::PixelType;

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

  itkSetMacro(BackgroundValue, OutputImagePixelType);
  itkGetConstMacro(BackgroundValue, OutputImagePixelType);
 
protected:
  LabelContourImageFilter();
  ~LabelContourImageFilter() override = default;
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  void
  GenerateData() override;
 
  void
  BeforeThreadedGenerateData() override;
 
  void
  AfterThreadedGenerateData() override;
 
  void
  DynamicThreadedGenerateData(const OutputRegionType & outputRegionForThread) override;
 
  void
  ThreadedIntegrateData(const OutputRegionType & outputRegionForThread);
 

  void
  GenerateInputRequestedRegion() override;

  void
  EnlargeOutputRequestedRegion(DataObject * itkNotUsed(output)) override;
 
  using ScanlineFunctions = ScanlineFilterCommon<TInputImage, TOutputImage>;
 
  using InternalLabelType = typename ScanlineFunctions::InternalLabelType;
  using OutSizeType = typename ScanlineFunctions::OutSizeType;
  using RunLength = typename ScanlineFunctions::RunLength;
  using LineEncodingType = typename ScanlineFunctions::LineEncodingType;
  using LineEncodingIterator = typename ScanlineFunctions::LineEncodingIterator;
  using LineEncodingConstIterator = typename ScanlineFunctions::LineEncodingConstIterator;
  using OffsetVectorType = typename ScanlineFunctions::OffsetVectorType;
  using OffsetVectorConstIterator = typename ScanlineFunctions::OffsetVectorConstIterator;
  using LineMapType = typename ScanlineFunctions::LineMapType;
  using UnionFindType = typename ScanlineFunctions::UnionFindType;
  using ConsecutiveVectorType = typename ScanlineFunctions::ConsecutiveVectorType;
 
private:
  OutputImagePixelType m_BackgroundValue{};
 
  LineMapType m_LineMap{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkLabelContourImageFilter.hxx"
#endif
 
#endif