itkGeodesicActiveContourLevelSetFunction.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkGeodesicActiveContourLevelSetFunction.h,v $
  Language:  C++
  Date:      $Date: 2003/02/20 20:40:13 $
  Version:   $Revision: 1.2 $

  Copyright (c) 2002 Insight 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 __itkGeodesicActiveContourLevelSetFunction_h_
#define __itkGeodesicActiveContourLevelSetFunction_h_

#include "itkSegmentationLevelSetFunction.h"

namespace itk {

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

  itkNewMacro(Self);

  itkTypeMacro( GeodesicActiveContourLevelSetFunction, SegmentationLevelSetFunction );

  typedef typename Superclass::ImageType ImageType;
  typedef typename Superclass::NeighborhoodType NeighborhoodType;
  typedef typename Superclass::ScalarValueType ScalarValueType;
  typedef typename Superclass::FeatureScalarType FeatureScalarType;
  typedef typename Superclass::RadiusType RadiusType;
  typedef typename Superclass::FloatOffsetType FloatOffsetType;
  typedef typename Superclass::VectorImageType VectorImageType;

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

  virtual void CalculateSpeedImage();

  virtual void CalculateAdvectionImage();

  virtual ScalarValueType CurvatureSpeed(const NeighborhoodType & neighborhood,
                                           const FloatOffsetType & offset ) const
    { return PropagationSpeed( neighborhood, offset ); }

  void SetDerivativeSigma( const double v )
    { m_DerivativeSigma = v; }
  double GetDerivativeSigma()
    { return m_DerivativeSigma; };

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

    m_DerivativeSigma = 1.0;
  }
  virtual ~GeodesicActiveContourLevelSetFunction() {}

  GeodesicActiveContourLevelSetFunction(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 << "DerivativeSigma: " << m_DerivativeSigma << std::endl;
  }

private:
  
  double m_DerivativeSigma;
  
};
  
} // end namespace itk

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

#endif

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