itkLevelSetEquationChanAndVeseInternalTerm.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
 *
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 *  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
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#ifndef itkLevelSetEquationChanAndVeseInternalTerm_h
#define itkLevelSetEquationChanAndVeseInternalTerm_h
 
#include "itkLevelSetEquationTermBase.h"
 
namespace itk
{
template <typename TInput, // Input image or mesh
          typename TLevelSetContainer>
class ITK_TEMPLATE_EXPORT LevelSetEquationChanAndVeseInternalTerm
  : public LevelSetEquationTermBase<TInput, TLevelSetContainer>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LevelSetEquationChanAndVeseInternalTerm);
 
  using Self = LevelSetEquationChanAndVeseInternalTerm;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
  using Superclass = LevelSetEquationTermBase<TInput, TLevelSetContainer>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(LevelSetEquationChanAndVeseInternalTerm);
 
  using typename Superclass::InputImageType;
  using typename Superclass::InputImagePointer;
  using typename Superclass::InputPixelType;
  using typename Superclass::InputPixelRealType;
 
  using typename Superclass::LevelSetContainerType;
  using typename Superclass::LevelSetContainerPointer;
  using typename Superclass::LevelSetType;
  using typename Superclass::LevelSetPointer;
  using typename Superclass::LevelSetOutputPixelType;
  using typename Superclass::LevelSetOutputRealType;
  using typename Superclass::LevelSetInputIndexType;
  using typename Superclass::LevelSetGradientType;
  using typename Superclass::LevelSetHessianType;
  using typename Superclass::LevelSetIdentifierType;
 
  using typename Superclass::HeavisideType;
  using typename Superclass::HeavisideConstPointer;
 
  using typename Superclass::LevelSetDataType;
 
  using typename Superclass::DomainMapImageFilterType;
  using typename Superclass::CacheImageType;
 
  itkSetMacro(Mean, InputPixelRealType);
  itkGetMacro(Mean, InputPixelRealType);

  void
  Update() override;

  void
  InitializeParameters() override;

  void
  Initialize(const LevelSetInputIndexType & inputIndex) override;

  virtual void
  ComputeProduct(const LevelSetInputIndexType & inputIndex, LevelSetOutputRealType & prod);

  virtual void
  ComputeProductTerm(const LevelSetInputIndexType &, LevelSetOutputRealType &)
  {}

  void
  UpdatePixel(const LevelSetInputIndexType & inputIndex,
              const LevelSetOutputRealType & oldValue,
              const LevelSetOutputRealType & newValue) override;
 
protected:
  LevelSetEquationChanAndVeseInternalTerm();
 
  ~LevelSetEquationChanAndVeseInternalTerm() override = default;

  LevelSetOutputRealType
  Value(const LevelSetInputIndexType & inputIndex) override;

  LevelSetOutputRealType
  Value(const LevelSetInputIndexType & inputIndex, const LevelSetDataType & data) override;

  void
  Accumulate(const InputPixelType & inputPixel, const LevelSetOutputRealType & heavisideValue);
 
  InputPixelRealType     m_Mean{};
  InputPixelRealType     m_TotalValue{};
  LevelSetOutputRealType m_TotalH{};
};
 
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkLevelSetEquationChanAndVeseInternalTerm.hxx"
#endif
 
#endif