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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkHistogramToIntensityImageFilter.h,v $
Language: C++
Date: $Date: 2009-04-01 14:36:37 $
Version: $Revision: 1.8 $
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 __itkHistogramToIntensityImageFilter_h
#define __itkHistogramToIntensityImageFilter_h
#include "itkHistogramToImageFilter.h"
namespace itk
{
/** \class HistogramToIntensityImageFilter
* \brief The class takes a histogram as an input and produces an image
* as the output. A pixel, at position I, in the output image is given by
*
* \f[
* f(I) = q_I
* \f]
* where \f$q_I\f$ is the frequency of measurement vector, I.
*
* \sa HistogramToProbabilityImageFilter, HistogramToLogProbabilityImageFilter,
* HistogramToImageFilter, HistogramToEntropyImageFilter
*/
namespace Function {
template< class TInput, class TOutput=unsigned long >
class HistogramIntensityFunction
{
public:
//Intensity function returns pixels of unsigned long..
typedef TOutput OutputPixelType;
HistogramIntensityFunction():
m_TotalFrequency(1) {}
~HistogramIntensityFunction() {};
inline OutputPixelType operator()( const TInput & A ) const
{
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 TOutputPixel=unsigned long >
class ITK_EXPORT HistogramToIntensityImageFilter :
public HistogramToImageFilter< THistogram,
Function::HistogramIntensityFunction< unsigned long, TOutputPixel > >
{
public:
/** Standard class typedefs. */
typedef HistogramToIntensityImageFilter Self;
/** Standard "Superclass" typedef. */
typedef HistogramToImageFilter< THistogram,
Function::HistogramIntensityFunction< unsigned long, TOutputPixel > >
Superclass;
//typedef typename Function::HistogramIntensityFunction FunctorType;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro( HistogramToIntensityImageFilter, HistogramToImageFilter );
/** Method for creation through the object factory. */
itkNewMacro(Self);
protected:
HistogramToIntensityImageFilter() {}
virtual ~HistogramToIntensityImageFilter() {}
private:
HistogramToIntensityImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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