itkValuedRegionalExtremaImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkValuedRegionalExtremaImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-04-23 03:43:42 $
  Version:   $Revision: 1.7 $

  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 __itkValuedRegionalExtremaImageFilter_h
#define __itkValuedRegionalExtremaImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkConstShapedNeighborhoodIterator.h"
#include "itkShapedNeighborhoodIterator.h"
#include "itkConstantBoundaryCondition.h"
#include "itkConceptChecking.h"
#include <stack>

namespace itk {

template<class TInputImage, class TOutputImage, 
      class TFunction1, class TFunction2>
class ITK_EXPORT ValuedRegionalExtremaImageFilter : 
    public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef ValuedRegionalExtremaImageFilter Self;

  typedef ImageToImageFilter<TInputImage, TOutputImage>
                                           Superclass;

  typedef SmartPointer<Self>        Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  typedef TInputImage                              InputImageType;
  typedef TOutputImage                             OutputImageType;
  typedef typename InputImageType::Pointer         InputImagePointer;
  typedef typename InputImageType::ConstPointer    InputImageConstPointer;
  typedef typename InputImageType::RegionType      InputImageRegionType;
  typedef typename InputImageType::PixelType       InputImagePixelType;
  typedef typename InputImageType::SizeType        ISizeType;
  typedef typename OutputImageType::Pointer        OutputImagePointer;
  typedef typename OutputImageType::ConstPointer   OutputImageConstPointer;
  typedef typename OutputImageType::RegionType     OutputImageRegionType;
  typedef typename OutputImageType::PixelType      OutputImagePixelType;

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

  itkNewMacro(Self);  

  itkTypeMacro(ValuedRegionalExtremaImageFilter, 
               ImageToImageFilter);


  itkSetMacro(FullyConnected, bool);
  itkGetConstReferenceMacro(FullyConnected, bool);
  itkBooleanMacro(FullyConnected);

  itkSetMacro(MarkerValue, typename TInputImage::PixelType);
  itkGetConstReferenceMacro(MarkerValue, typename TInputImage::PixelType);

  itkGetConstMacro(Flat, bool);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(InputHasPixelTraitsCheck,
    (Concept::HasPixelTraits<InputImagePixelType>));
  itkConceptMacro(InputHasNumericTraitsCheck,
    (Concept::HasNumericTraits<InputImagePixelType>));

#endif

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

  void GenerateInputRequestedRegion();

  void EnlargeOutputRequestedRegion(DataObject *itkNotUsed(output));

  void GenerateData();
  

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

  typename TInputImage::PixelType                         m_MarkerValue;
  bool                                                    m_FullyConnected;
  bool                                                    m_Flat;

  typedef typename OutputImageType::IndexType             OutIndexType;
  typedef typename InputImageType::IndexType              InIndexType;
  typedef ConstShapedNeighborhoodIterator<InputImageType> ConstInputIterator;
  typedef ShapedNeighborhoodIterator<OutputImageType>     NOutputIterator;
  typedef std::stack<OutIndexType>                        IndexStack;

}; // end of class

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

#endif