itkErodeObjectMorphologyImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkErodeObjectMorphologyImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2008-10-14 19:20:33 $
  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 __itkErodeObjectMorphologyImageFilter_h
#define __itkErodeObjectMorphologyImageFilter_h

#include "itkObjectMorphologyImageFilter.h"

namespace itk {

template<class TInputImage, class TOutputImage, class TKernel>
class ITK_EXPORT ErodeObjectMorphologyImageFilter : 
    public ObjectMorphologyImageFilter<TInputImage, TOutputImage, TKernel>
{
public:
  typedef ErodeObjectMorphologyImageFilter Self;
  typedef ObjectMorphologyImageFilter<TInputImage, TOutputImage, TKernel>
                                           Superclass;
  typedef SmartPointer<Self>               Pointer;
  typedef SmartPointer<const Self>         ConstPointer;

  itkNewMacro(Self);  

  itkTypeMacro(ErodeObjectMorphologyImageFilter, ObjectMorphologyImageFilter);

  typedef typename Superclass::PixelType PixelType;

  typedef TKernel KernelType;

  typedef typename KernelType::ConstIterator KernelIteratorType;

  typedef NeighborhoodIterator<TOutputImage> OutputNeighborhoodIteratorType;

  typedef typename Superclass::DefaultBoundaryConditionType 
                                             DefaultBoundaryConditionType;


  void SetErodeValue( PixelType objectValue )
    {
    this->SetObjectValue( objectValue );
    }

  PixelType GetErodeValue( void )
    {
    return this->GetObjectValue();
    }

  itkSetMacro(BackgroundValue, PixelType);

  itkGetMacro(BackgroundValue, PixelType);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(KernelGreaterThanIntCheck,
    (Concept::GreaterThanComparable<typename TKernel::PixelType, int>));

#endif

protected:
  ErodeObjectMorphologyImageFilter();
  ~ErodeObjectMorphologyImageFilter() {};
  void PrintSelf(std::ostream& os, Indent indent) const;

  void Evaluate(OutputNeighborhoodIteratorType &nit,
                const KernelType &kernel);

private:
  ErodeObjectMorphologyImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  PixelType m_BackgroundValue;

  // Default boundary condition for erosion filter, defaults to
  // NumericTraits<PixelType>::max()
  DefaultBoundaryConditionType m_ErodeBoundaryCondition;

}; // end of class

} // end namespace itk
  
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkErodeObjectMorphologyImageFilter.txx"
#endif

#endif

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