itkCurvesLevelSetFunction.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 itkCurvesLevelSetFunction_h
#define itkCurvesLevelSetFunction_h
 
#include "itkSegmentationLevelSetFunction.h"
 
namespace itk
{
template <typename TImageType, typename TFeatureImageType = TImageType>
class ITK_TEMPLATE_EXPORT CurvesLevelSetFunction : public SegmentationLevelSetFunction<TImageType, TFeatureImageType>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(CurvesLevelSetFunction);
 
  using Self = CurvesLevelSetFunction;
  using Superclass = SegmentationLevelSetFunction<TImageType, TFeatureImageType>;
  using SuperSuperclass = LevelSetFunction<TImageType>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
  using FeatureImageType = TFeatureImageType;
 
  itkNewMacro(Self);
 
  itkOverrideGetNameOfClassMacro(CurvesLevelSetFunction);
 
  using PixelType = typename SuperSuperclass::PixelType;
  using typename Superclass::ImageType;
  using typename Superclass::NeighborhoodType;
  using typename Superclass::ScalarValueType;
  using typename Superclass::FeatureScalarType;
  using typename Superclass::RadiusType;
  using FloatOffsetType = typename SuperSuperclass::FloatOffsetType;
  using GlobalDataStruct = typename SuperSuperclass::GlobalDataStruct;
  using typename Superclass::VectorImageType;
 
  static constexpr unsigned int ImageDimension = Superclass::ImageDimension;
 
  void
  CalculateSpeedImage() override;
 
  void
  CalculateAdvectionImage() override;
 
  ScalarValueType
  CurvatureSpeed(const NeighborhoodType & neighborhood,
                 const FloatOffsetType &  offset,
                 GlobalDataStruct *       gd) const override
  {
    return this->PropagationSpeed(neighborhood, offset, gd);
  }
 
  void
  SetDerivativeSigma(const double v)
  {
    m_DerivativeSigma = v;
  }
  double
  GetDerivativeSigma()
  {
    return m_DerivativeSigma;
  }
  void
  Initialize(const RadiusType & r) override;
 
protected:
  CurvesLevelSetFunction()
 
  {
    // Curvature term is the minimal curvature.
    this->UseMinimalCurvatureOn();
    this->SetAdvectionWeight(NumericTraits<ScalarValueType>::OneValue());
    this->SetPropagationWeight(NumericTraits<ScalarValueType>::OneValue());
    this->SetCurvatureWeight(NumericTraits<ScalarValueType>::OneValue());
  }
 
  ~CurvesLevelSetFunction() override = default;
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override
  {
    Superclass::PrintSelf(os, indent);
    os << indent << "DerivativeSigma: " << m_DerivativeSigma << std::endl;
  }
 
private:
  std::slice x_slice[ImageDimension];
 
  OffsetValueType m_Center{ 0 };
 
  OffsetValueType m_xStride[ImageDimension]{};
 
  double m_DerivativeSigma{ 1.0 };
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkCurvesLevelSetFunction.hxx"
#endif
 
#endif