itkShapePriorSegmentationLevelSetImageFilter.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 itkShapePriorSegmentationLevelSetImageFilter_h
#define itkShapePriorSegmentationLevelSetImageFilter_h
 
#include "itkSegmentationLevelSetImageFilter.h"
#include "itkShapePriorSegmentationLevelSetFunction.h"
#include "itkSingleValuedNonLinearOptimizer.h"
#include "itkShapePriorMAPCostFunctionBase.h"
#include "itkMath.h"
 
namespace itk
{
template <typename TInputImage, typename TFeatureImage, typename TOutputPixelType = float>
class ITK_TEMPLATE_EXPORT ShapePriorSegmentationLevelSetImageFilter
  : public SegmentationLevelSetImageFilter<TInputImage, TFeatureImage, TOutputPixelType>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ShapePriorSegmentationLevelSetImageFilter);

  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;

  using Self = ShapePriorSegmentationLevelSetImageFilter;
  using Superclass = SegmentationLevelSetImageFilter<TInputImage, TFeatureImage, TOutputPixelType>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkOverrideGetNameOfClassMacro(ShapePriorSegmentationLevelSetImageFilter);

  using typename Superclass::ValueType;
  using typename Superclass::OutputImageType;
  using typename Superclass::FeatureImageType;

  using OutputPixelType = TOutputPixelType;

  using ShapePriorSegmentationFunctionType = ShapePriorSegmentationLevelSetFunction<OutputImageType, FeatureImageType>;

  using ShapeFunctionType = typename ShapePriorSegmentationFunctionType::ShapeFunctionType;
  using ShapeFunctionPointer = typename ShapeFunctionType::Pointer;

  using CostFunctionType = ShapePriorMAPCostFunctionBase<TFeatureImage, TOutputPixelType>;
  using CostFunctionPointer = typename CostFunctionType::Pointer;
  using ParametersType = typename CostFunctionType::ParametersType;

  using NodeType = typename CostFunctionType::NodeType;
  using NodeContainerType = typename CostFunctionType::NodeContainerType;
  using NodeContainerPointer = typename NodeContainerType::Pointer;

  using OptimizerType = SingleValuedNonLinearOptimizer;
  using OptimizerPointer = typename OptimizerType::Pointer;

  virtual void
  SetShapeFunction(ShapeFunctionType * s);
  itkGetModifiableObjectMacro(ShapeFunction, ShapeFunctionType);

  itkSetObjectMacro(CostFunction, CostFunctionType);
  itkGetModifiableObjectMacro(CostFunction, CostFunctionType);

  itkSetObjectMacro(Optimizer, OptimizerType);
  itkGetModifiableObjectMacro(Optimizer, OptimizerType);

  itkSetMacro(InitialParameters, ParametersType);
  itkGetConstMacro(InitialParameters, ParametersType);

  void
  SetShapePriorScaling(ValueType v)
  {
    if (Math::NotExactlyEquals(v, m_ShapePriorSegmentationFunction->GetShapePriorWeight()))
    {
      m_ShapePriorSegmentationFunction->SetShapePriorWeight(v);
      this->Modified();
    }
  }
 
  ValueType
  GetShapePriorScaling() const
  {
    return m_ShapePriorSegmentationFunction->GetShapePriorWeight();
  }


  virtual void
  SetShapePriorSegmentationFunction(ShapePriorSegmentationFunctionType * s);
 
  virtual ShapePriorSegmentationFunctionType *
  GetShapePriorSegmentationFunction()
  {
    return m_ShapePriorSegmentationFunction;
  }

  itkGetConstReferenceMacro(CurrentParameters, ParametersType);
 
protected:
  ~ShapePriorSegmentationLevelSetImageFilter() override = default;
  ShapePriorSegmentationLevelSetImageFilter();
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

  void
  InitializeIteration() override;

  void
  GenerateData() override;

  void
  ExtractActiveRegion(NodeContainerType * ptr);
 
private:
  ShapeFunctionPointer m_ShapeFunction{};
  CostFunctionPointer  m_CostFunction{};
  OptimizerPointer     m_Optimizer{};
  ParametersType       m_InitialParameters{};
  ParametersType       m_CurrentParameters{};
 
  ShapePriorSegmentationFunctionType * m_ShapePriorSegmentationFunction{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkShapePriorSegmentationLevelSetImageFilter.hxx"
#endif
 
#endif