itkHistogramToIntensityImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkHistogramToIntensityImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2007-10-27 19:51:47 $
  Version:   $Revision: 1.4 $

  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 __itkHistogramIntensityFunction_h
#define __itkHistogramIntensityFunction_h

#include "itkHistogramToImageFilter.h"

namespace itk
{
  
namespace Function {  
template< class TInput>
class HistogramIntensityFunction
{
public:
  
  //Intensity function returns pixels of unsigned long.. 
  typedef unsigned long  OutputPixelType   ;
  
  
  HistogramIntensityFunction(): 
      m_TotalFrequency(1) {}

  ~HistogramIntensityFunction() {};
 
  inline OutputPixelType operator()( const TInput & A )
  {
    return static_cast<OutputPixelType>( A );
  }

  void SetTotalFrequency( unsigned long n ) 
    {
    m_TotalFrequency = n;
    }
  
  unsigned long GetTotalFrequency( ) const 
    {
    return m_TotalFrequency;
    }

private:
  unsigned long  m_TotalFrequency;
}; 
}

template <class THistogram >
class ITK_EXPORT HistogramToIntensityImageFilter :
  public HistogramToImageFilter< THistogram, 
  Function::HistogramIntensityFunction< unsigned long> > 
{
public:
  
  typedef HistogramToIntensityImageFilter                  Self;
  //typedef typename Function::HistogramIntensityFunction  FunctorType;
  typedef SmartPointer<Self>                               Pointer;
  typedef SmartPointer<const Self>                         ConstPointer;

  itkTypeMacro( HistogramToIntensityImageFilter, HistogramToImageFilter );

  itkNewMacro(Self);

protected:
  HistogramToIntensityImageFilter() {}
  virtual ~HistogramToIntensityImageFilter() {}
  
private:
  HistogramToIntensityImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

};

} // end namespace itk

#endif

---