itkThresholdSegmentationLevelSetFunction.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkThresholdSegmentationLevelSetFunction.h,v $
  Language:  C++
  Date:      $Date: 2009-11-22 13:36:06 $
  Version:   $Revision: 1.15 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkThresholdSegmentationLevelSetFunction_h
#define __itkThresholdSegmentationLevelSetFunction_h

#include "itkSegmentationLevelSetFunction.h"
#include "itkNumericTraits.h"
namespace itk {

template <class TImageType, class TFeatureImageType = TImageType>
class ITK_EXPORT ThresholdSegmentationLevelSetFunction
  : public SegmentationLevelSetFunction<TImageType, TFeatureImageType>
{
public:
  typedef ThresholdSegmentationLevelSetFunction Self;
  typedef SegmentationLevelSetFunction<TImageType, TFeatureImageType>
                                                Superclass;
  typedef SmartPointer<Self>                    Pointer;
  typedef SmartPointer<const Self>              ConstPointer;
  typedef TFeatureImageType                     FeatureImageType;

  itkNewMacro(Self);

  itkTypeMacro( ThresholdSegmentationLevelSetFunction, SegmentationLevelSetFunction );

  typedef typename Superclass::ImageType         ImageType;
  typedef typename Superclass::ScalarValueType   ScalarValueType;
  typedef typename Superclass::FeatureScalarType FeatureScalarType;
  typedef typename Superclass::RadiusType        RadiusType;

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

  void SetUpperThreshold(FeatureScalarType f)
    { m_UpperThreshold = f; }
  FeatureScalarType GetUpperThreshold() const
    { return m_UpperThreshold; }
  void SetLowerThreshold(FeatureScalarType f)
    { m_LowerThreshold = f; }
  FeatureScalarType GetLowerThreshold() const
    { return m_LowerThreshold; }

  virtual void CalculateSpeedImage();

  virtual void Initialize(const RadiusType &r)
    {
    Superclass::Initialize(r);
    
    this->SetAdvectionWeight( NumericTraits<ScalarValueType>::Zero);
    this->SetPropagationWeight(-1.0 * NumericTraits<ScalarValueType>::One);
    this->SetCurvatureWeight(NumericTraits<ScalarValueType>::One);
    }

  void SetEdgeWeight(const ScalarValueType p)
    {
    m_EdgeWeight = p;
    }
  ScalarValueType GetEdgeWeight() const
    {
    return m_EdgeWeight;
    }

  void SetSmoothingConductance(const ScalarValueType p)
    {
    m_SmoothingConductance = p;
    }
  ScalarValueType GetSmoothingConductance() const
    {
    return m_SmoothingConductance;
    }

  void SetSmoothingIterations(const int p)
    {
    m_SmoothingIterations = p;
    }
  int GetSmoothingIterations() const
    {
    return m_SmoothingIterations;
    }

  void SetSmoothingTimeStep(const ScalarValueType i)
    {
    m_SmoothingTimeStep = i;
    }
  ScalarValueType GetSmoothingTimeStep() const
    {
    return m_SmoothingTimeStep;
    }

protected:
  ThresholdSegmentationLevelSetFunction()
    {
    m_UpperThreshold = NumericTraits<FeatureScalarType>::max();
    m_LowerThreshold = NumericTraits<FeatureScalarType>::NonpositiveMin();
    this->SetAdvectionWeight(0.0);
    this->SetPropagationWeight(1.0);
    this->SetCurvatureWeight(1.0);
    this->SetSmoothingIterations(5);
    this->SetSmoothingConductance(0.8);
    this->SetSmoothingTimeStep(0.1);
    this->SetEdgeWeight(0.0);
    }
  virtual ~ThresholdSegmentationLevelSetFunction(){}

  ThresholdSegmentationLevelSetFunction(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  void PrintSelf(std::ostream& os, Indent indent) const
    {
    Superclass::PrintSelf(os, indent );
    os << indent << "UpperThreshold: " << m_UpperThreshold << std::endl;
    os << indent << "LowerThreshold: " << m_LowerThreshold << std::endl;
    os << indent << "EdgeWeight: " << m_EdgeWeight << std::endl;
    os << indent << "SmoothingTimeStep: " << m_SmoothingTimeStep << std::endl;
    os << indent << "SmoothingIterations: " << m_SmoothingIterations << std::endl;
    os << indent << "SmoothingConductance: " << m_SmoothingConductance << std::endl;
    }
  
  FeatureScalarType m_UpperThreshold;
  FeatureScalarType m_LowerThreshold;
  ScalarValueType   m_EdgeWeight;
  ScalarValueType   m_SmoothingConductance;
  int               m_SmoothingIterations;
  ScalarValueType   m_SmoothingTimeStep;
};
  
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkThresholdSegmentationLevelSetFunction.txx"
#endif

#endif