itkSobelOperator.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSobelOperator.h,v $
  Language:  C++
  Date:      $Date: 2007-02-01 14:39:33 $
  Version:   $Revision: 1.9 $

  Copyright (c) Insight Software 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 __itkSobelOperator_h
#define __itkSobelOperator_h

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

namespace itk {

template<class TPixel, unsigned int VDimension=2,
  class TAllocator = NeighborhoodAllocator<TPixel> >
class ITK_EXPORT SobelOperator
  : public NeighborhoodOperator<TPixel, VDimension, TAllocator>
{
public:

  typedef SobelOperator Self;
  typedef NeighborhoodOperator<TPixel, VDimension, TAllocator>  Superclass;

  itkTypeMacro(SobelOperator, NeighborhoodOperator);
  
  SobelOperator() {}
  SobelOperator(const Self& other)
    : NeighborhoodOperator<TPixel, VDimension, TAllocator>(other) 
  {  }

  virtual void CreateDirectional()
  {
    this->CreateToRadius(1);
  }

  // virtual void CreateToRadius(const unsigned long);

  Self &operator=(const Self& other)
  {
    Superclass::operator=(other);
    return *this;
  }

  virtual void PrintSelf(std::ostream &os, Indent i) const  
  { 
    os << i << "SobelOperator { this=" << this  << "}" << std::endl;
    Superclass::PrintSelf(os, i.GetNextIndent());
  }

protected:
  typedef typename Superclass::CoefficientVector CoefficientVector;
  typedef typename Superclass::PixelType PixelType;

  CoefficientVector GenerateCoefficients();

  void Fill(const CoefficientVector &c);

};

} // namespace itk

// Define instantiation macro for this template.
#define ITK_TEMPLATE_SobelOperator(_, EXPORT, x, y) namespace itk { \
  _(2(class EXPORT SobelOperator< ITK_TEMPLATE_2 x >)) \
  namespace Templates { typedef SobelOperator< ITK_TEMPLATE_2 x > \
                                                  SobelOperator##y; } \
  }

#if ITK_TEMPLATE_EXPLICIT
# include "Templates/itkSobelOperator+-.h"
#endif

#if ITK_TEMPLATE_TXX
# include "itkSobelOperator.txx"
#endif

#endif