itkBackwardDifferenceOperator.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkBackwardDifferenceOperator.h,v $
  Language:  C++
  Date:      $Date: 2002/07/28 12:32:51 $
  Version:   $Revision: 1.16 $

  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 __itkBackwardDifferenceOperator_h
#define __itkBackwardDifferenceOperator_h

#include "itkNeighborhoodOperator.h"
#include "itkExceptionObject.h"

namespace itk {

template<class TPixel, unsigned int VDimension=2,
  class TAllocator = NeighborhoodAllocator<TPixel> >
class ITK_EXPORT BackwardDifferenceOperator
  : public NeighborhoodOperator<TPixel, VDimension, TAllocator>
{
public:
  typedef BackwardDifferenceOperator Self;
  typedef NeighborhoodOperator<TPixel, VDimension, TAllocator> Superclass;
    
  typedef typename Superclass::PixelType PixelType;

  BackwardDifferenceOperator() {}

protected:
  typedef typename Superclass::CoefficientVector CoefficientVector;

  CoefficientVector GenerateCoefficients();

  void Fill(const CoefficientVector &coeff)
    { this->FillCenteredDirectional(coeff); }

private:
  BackwardDifferenceOperator(const Self& other); //purposely not implemented
  Self &operator=(const Self& other); //purposely not implemented
  
};

} // namespace itk

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

#endif

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