itkThresholdSegmentationLevelSetFunction.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 __itkThresholdSegmentationLevelSetFunction_h
#define __itkThresholdSegmentationLevelSetFunction_h

#include "itkSegmentationLevelSetFunction.h"
#include "itkNumericTraits.h"
namespace itk
{
template< typename TImageType, typename TFeatureImageType = TImageType >
class 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.hxx"
#endif

#endif