itkLaplacianSegmentationLevelSetFunction.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 __itkLaplacianSegmentationLevelSetFunction_h
#define __itkLaplacianSegmentationLevelSetFunction_h

#include "itkSegmentationLevelSetFunction.h"

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

  itkNewMacro(Self);

  itkTypeMacro(LaplacianSegmentationLevelSetFunction, 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);

  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 SetAdvectionWeight(const ScalarValueType value)
  {
    if ( value == NumericTraits< ScalarValueType >::Zero )
      {
      Superclass::SetAdvectionWeight(value);
      }
  }

protected:

  LaplacianSegmentationLevelSetFunction()
  {
    this->SetAdvectionWeight(0.0);
    this->SetPropagationWeight(1.0);
    this->SetCurvatureWeight(1.0);
  }

  virtual ~LaplacianSegmentationLevelSetFunction() {}

  LaplacianSegmentationLevelSetFunction(const Self &); //purposely not
                                                       // implemented
  void operator=(const Self &);                        //purposely not
                                                       // implemented
};
} // end namespace itk

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

#endif