itkOptMorphologyImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkOptMorphologyImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-04-23 03:43:42 $
  Version:   $Revision: 1.2 $

  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 __itkOptMorphologyImageFilter_h
#define __itkOptMorphologyImageFilter_h

#include "itkKernelImageFilter.h"
#include "itkNeighborhoodIterator.h"
#include "itkConstNeighborhoodIterator.h"
#include "itkNeighborhood.h"
#include "itkConstSliceIterator.h"
#include "itkImageBoundaryCondition.h"
#include "itkConstantBoundaryCondition.h"
#include "itkImageRegionIterator.h"

namespace itk {

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

  itkTypeMacro(MorphologyImageFilter, KernelImageFilter);

  typedef TInputImage                                           InputImageType;
  typedef TOutputImage                                          OutputImageType;
  typedef typename TInputImage::RegionType                      RegionType;
  typedef typename TInputImage::SizeType                        SizeType;
  typedef typename TInputImage::IndexType                       IndexType;
  typedef typename TInputImage::PixelType                       PixelType;
  typedef typename Superclass::OutputImageRegionType            OutputImageRegionType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TInputImage::ImageDimension);

  typedef ImageBoundaryCondition<InputImageType> *              ImageBoundaryConditionPointerType;
  typedef ImageBoundaryCondition<InputImageType> const *        ImageBoundaryConditionConstPointerType;
  typedef ConstantBoundaryCondition<InputImageType>             DefaultBoundaryConditionType;


  typedef ConstNeighborhoodIterator<TInputImage>                NeighborhoodIteratorType;

  typedef TKernel                                               KernelType;

  typedef typename KernelType::ConstIterator                    KernelIteratorType;

  typedef typename KernelType::SizeType                         RadiusType;

  void OverrideBoundaryCondition(const ImageBoundaryConditionPointerType i)
    { 
    m_BoundaryCondition = i;
    }

  void ResetBoundaryCondition()
    {
    m_BoundaryCondition = &m_DefaultBoundaryCondition;
    }

  itkGetConstMacro(BoundaryCondition, ImageBoundaryConditionPointerType);

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

  void  ThreadedGenerateData (const OutputImageRegionType& 
                              outputRegionForThread,
                              int threadId);

  virtual PixelType Evaluate(const NeighborhoodIteratorType &nit,
                             const KernelIteratorType kernelBegin,
                             const KernelIteratorType kernelEnd)=0;

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

  ImageBoundaryConditionPointerType m_BoundaryCondition;

  DefaultBoundaryConditionType      m_DefaultBoundaryCondition;

}; // end of class

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

#endif

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