itkCurvesLevelSetFunction.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 __itkCurvesLevelSetFunction_h
#define __itkCurvesLevelSetFunction_h

#include "itkSegmentationLevelSetFunction.h"

namespace itk
{
template< class TImageType, class TFeatureImageType = TImageType >
class ITK_EXPORT CurvesLevelSetFunction:
  public SegmentationLevelSetFunction< TImageType, TFeatureImageType >
{
public:
  typedef CurvesLevelSetFunction                     Self;
  typedef SegmentationLevelSetFunction< TImageType > Superclass;
  typedef LevelSetFunction< TImageType >             SuperSuperclass;
  typedef SmartPointer< Self >                       Pointer;
  typedef SmartPointer< const Self >                 ConstPointer;
  typedef TFeatureImageType                          FeatureImageType;

  itkNewMacro(Self);

  itkTypeMacro(CurvesLevelSetFunction, SegmentationLevelSetFunction);

  typedef typename SuperSuperclass::PixelType        PixelType;
  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 SuperSuperclass::FloatOffsetType  FloatOffsetType;
  typedef typename SuperSuperclass::GlobalDataStruct GlobalDataStruct;
  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, GlobalDataStruct *gd) const
  { return this->PropagationSpeed(neighborhood, offset, gd); }

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

  virtual void Initialize(const RadiusType & r);

protected:
  CurvesLevelSetFunction()
  {
    //Curvature term is the minimal curvature.
    this->UseMinimalCurvatureOn();
    this->SetAdvectionWeight(NumericTraits< ScalarValueType >::One);
    this->SetPropagationWeight(NumericTraits< ScalarValueType >::One);
    this->SetCurvatureWeight(NumericTraits< ScalarValueType >::One);

    m_DerivativeSigma = 1.0;
  }

  virtual ~CurvesLevelSetFunction() {}

  CurvesLevelSetFunction(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:

  std::slice x_slice[ImageDimension];

  OffsetValueType m_Center;

  OffsetValueType m_xStride[ImageDimension];

  double m_DerivativeSigma;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkCurvesLevelSetFunction.hxx"
#endif

#endif