itkLevelSetEquationChanAndVeseInternalTerm.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
 *
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 *  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 itkLevelSetEquationChanAndVeseInternalTerm_h
#define itkLevelSetEquationChanAndVeseInternalTerm_h

#include "itkLevelSetEquationTermBase.h"

namespace itk
{
template< typename TInput, // Input image or mesh
          typename TLevelSetContainer >
class ITK_TEMPLATE_EXPORT LevelSetEquationChanAndVeseInternalTerm :
    public LevelSetEquationTermBase< TInput, TLevelSetContainer >
{
public:
  typedef LevelSetEquationChanAndVeseInternalTerm         Self;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;
  typedef LevelSetEquationTermBase< TInput,
                                    TLevelSetContainer >  Superclass;

  itkNewMacro( Self );

  itkTypeMacro( LevelSetEquationChanAndVeseInternalTerm,
                LevelSetEquationTermBase );

  typedef typename Superclass::InputImageType     InputImageType;
  typedef typename Superclass::InputImagePointer  InputImagePointer;
  typedef typename Superclass::InputPixelType     InputPixelType;
  typedef typename Superclass::InputPixelRealType InputPixelRealType;

  typedef typename Superclass::LevelSetContainerType      LevelSetContainerType;
  typedef typename Superclass::LevelSetContainerPointer   LevelSetContainerPointer;
  typedef typename Superclass::LevelSetType               LevelSetType;
  typedef typename Superclass::LevelSetPointer            LevelSetPointer;
  typedef typename Superclass::LevelSetOutputPixelType    LevelSetOutputPixelType;
  typedef typename Superclass::LevelSetOutputRealType     LevelSetOutputRealType;
  typedef typename Superclass::LevelSetInputIndexType     LevelSetInputIndexType;
  typedef typename Superclass::LevelSetGradientType       LevelSetGradientType;
  typedef typename Superclass::LevelSetHessianType        LevelSetHessianType;
  typedef typename Superclass::LevelSetIdentifierType     LevelSetIdentifierType;

  typedef typename Superclass::HeavisideType              HeavisideType;
  typedef typename Superclass::HeavisideConstPointer      HeavisideConstPointer;

  typedef typename Superclass::LevelSetDataType LevelSetDataType;

  typedef typename Superclass::DomainMapImageFilterType   DomainMapImageFilterType;
  typedef typename Superclass::CacheImageType             CacheImageType;

  itkSetMacro( Mean, InputPixelRealType );
  itkGetMacro( Mean, InputPixelRealType );

  virtual void Update() ITK_OVERRIDE;

  virtual void InitializeParameters() ITK_OVERRIDE;

  virtual void Initialize( const LevelSetInputIndexType& inputIndex ) ITK_OVERRIDE;

  virtual void ComputeProduct( const LevelSetInputIndexType& inputPixel,
                              LevelSetOutputRealType& prod );

  virtual void ComputeProductTerm( const LevelSetInputIndexType& ,
                                  LevelSetOutputRealType& )
  {}

  virtual void UpdatePixel( const LevelSetInputIndexType& inputPixel,
                           const LevelSetOutputRealType & oldValue,
                           const LevelSetOutputRealType & newValue ) ITK_OVERRIDE;

protected:
  LevelSetEquationChanAndVeseInternalTerm();

  virtual ~LevelSetEquationChanAndVeseInternalTerm() ITK_OVERRIDE;

  virtual LevelSetOutputRealType Value( const LevelSetInputIndexType& inputPixel ) ITK_OVERRIDE;

  virtual LevelSetOutputRealType Value( const LevelSetInputIndexType& inputPixel,
                                        const LevelSetDataType& data ) ITK_OVERRIDE;

  void Accumulate( const InputPixelType& inputPixel,
                   const LevelSetOutputRealType& heavisideValue );

  InputPixelRealType      m_Mean;
  InputPixelRealType      m_TotalValue;
  LevelSetOutputRealType  m_TotalH;

private:
  ITK_DISALLOW_COPY_AND_ASSIGN(LevelSetEquationChanAndVeseInternalTerm);
};

}
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLevelSetEquationChanAndVeseInternalTerm.hxx"
#endif

#endif