itkGrayscaleErodeImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkGrayscaleErodeImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2006/03/28 19:59:04 $
  Version:   $Revision: 1.19 $

  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 __itkGrayscaleErodeImageFilter_h
#define __itkGrayscaleErodeImageFilter_h

#include "itkMorphologyImageFilter.h"

namespace itk {

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

  itkNewMacro(Self);  

  itkTypeMacro(GrayscaleErodeImageFilter, 
               MorphologyImageFilter);

  typedef typename Superclass::PixelType PixelType;

  typedef typename Superclass::KernelIteratorType  KernelIteratorType;

  typedef typename Superclass::NeighborhoodIteratorType NeighborhoodIteratorType ;

  typedef typename Superclass::KernelType KernelType;

  typedef typename Superclass::DefaultBoundaryConditionType DefaultBoundaryConditionType;

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TOutputImage::ImageDimension);
  itkStaticConstMacro(KernelDimension, unsigned int,
                      TKernel::NeighborhoodDimension);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(InputConvertibleToOutputCheck,
    (Concept::Convertible<PixelType, typename TOutputImage::PixelType>));
  itkConceptMacro(SameDimensionCheck1,
     (Concept::SameDimension<InputImageDimension, OutputImageDimension>));
  itkConceptMacro(SameDimensionCheck2,
    (Concept::SameDimension<InputImageDimension, KernelDimension>));
  itkConceptMacro(InputLessThanComparableCheck,
    (Concept::LessThanComparable<PixelType>));
  itkConceptMacro(KernelGreaterThanIntCheck,
    (Concept::GreaterThanComparable<typename TKernel::PixelType, int>));

#endif

protected:
  GrayscaleErodeImageFilter();
  ~GrayscaleErodeImageFilter() {};

  virtual PixelType Evaluate(const NeighborhoodIteratorType &nit,
                             const KernelIteratorType kernelBegin,
                             const KernelIteratorType kernelEnd);

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

  // 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 "itkGrayscaleErodeImageFilter.txx"
#endif

#endif

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