itkConstrainedValueAdditionImageFilter.h

Go to the documentation of this file.

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkConstrainedValueAdditionImageFilter.h,v $
  Language:  C++

  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 __itkConstrainedValueAdditionImageFilter_h
#define __itkConstrainedValueAdditionImageFilter_h

#include "itkBinaryFunctorImageFilter.h"
#include "itkNumericTraits.h"

namespace itk
{
  
namespace Functor {  
  
template< class TInput1, class TInput2, class TOutput>
class ConstrainedValueAddition
{
public:
  ConstrainedValueAddition() {};
  ~ConstrainedValueAddition() {};
  inline TOutput operator()( const TInput1 & A, 
                             const TInput2 & B)
  {
    const double dA = static_cast<double>( A );
    const double dB = static_cast<double>( B );
    const double add = dA + dB;
    const double cadd = ( add < NumericTraits<TOutput>::max() ) ? add : NumericTraits<TOutput>::max(); 
    return static_cast<TOutput>( cadd );
  }
}; 
}

template <class TInputImage1, class TInputImage2, class TOutputImage>
class ITK_EXPORT ConstrainedValueAdditionImageFilter :
    public
BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage, 
                         Functor::ConstrainedValueAddition< 
  typename TInputImage1::PixelType, 
  typename TInputImage2::PixelType,
  typename TOutputImage::PixelType>   >
{
public:
  typedef ConstrainedValueAdditionImageFilter  Self;
  typedef BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage, 
                                   Functor::ConstrainedValueAddition< 
    typename TInputImage1::PixelType, 
    typename TInputImage2::PixelType,
    typename TOutputImage::PixelType>   
  >  Superclass;
  typedef SmartPointer<Self>   Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkNewMacro(Self);
  
protected:
  ConstrainedValueAdditionImageFilter() {}
  virtual ~ConstrainedValueAdditionImageFilter() {}

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

};

} // end namespace itk


#endif

---