itkShapePriorSegmentationLevelSetImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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
 *
 *         http://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:

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TInputImage::ImageDimension);

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

  itkTypeMacro(ShapePriorSegmentationLevelSetImageFilter, SegmentationLevelSetImageFilter);

  typedef typename Superclass::ValueType        ValueType;
  typedef typename Superclass::OutputImageType  OutputImageType;
  typedef typename Superclass::FeatureImageType FeatureImageType;

  typedef TOutputPixelType OutputPixelType;

  typedef ShapePriorSegmentationLevelSetFunction< OutputImageType,
                                                  FeatureImageType > ShapePriorSegmentationFunctionType;

  typedef typename ShapePriorSegmentationFunctionType::ShapeFunctionType ShapeFunctionType;
  typedef typename ShapeFunctionType::Pointer                            ShapeFunctionPointer;

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

  typedef  typename CostFunctionType::NodeType          NodeType;
  typedef  typename CostFunctionType::NodeContainerType NodeContainerType;
  typedef  typename NodeContainerType::Pointer          NodeContainerPointer;

  typedef   SingleValuedNonLinearOptimizer  OptimizerType;
  typedef   typename OptimizerType::Pointer OptimizerPointer;

  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:
  virtual ~ShapePriorSegmentationLevelSetImageFilter() ITK_OVERRIDE {}
  ShapePriorSegmentationLevelSetImageFilter();

  virtual void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;

  virtual void InitializeIteration() ITK_OVERRIDE;

  void GenerateData() ITK_OVERRIDE;

  void ExtractActiveRegion(NodeContainerType *ptr);

private:
  ITK_DISALLOW_COPY_AND_ASSIGN(ShapePriorSegmentationLevelSetImageFilter);

  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