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/*=========================================================================
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/VolViewCopyright.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 notice for more information.
=========================================================================*/
#ifndef __itkTernaryMaximumImageFilter_h
#define __itkTernaryMaximumImageFilter_h
#include "itkTernaryFunctorImageFilter.h"
namespace itk
{
/** \class TernaryMaximumImageFilter
* \brief Implements pixel-wise addition of three images.
*
* This class is parametrized over the types of the three
* input images and the type of the output image.
* Numeric conversions (castings) are done by the C++ defaults.
*
* \ingroup IntensityImageFilters
*/
namespace Function {
template< class TInput1, class TInput2, class TInput3, class TOutput>
class Maximum3
{
public:
Maximum3() {}
~Maximum3() {}
bool operator!=( const Maximum3 & ) const
{
return false;
}
bool operator==( const Maximum3 & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput1 & A,
const TInput2 & B,
const TInput3 & C) const
{
if(A >= B && A >= C)
{
return static_cast<TOutput>(A);
}
if(B >= A && B >= C)
{
return static_cast<TOutput>(B);
}
if(C >= A && C >= B)
{
return static_cast<TOutput>(C);
}
}
};
}
template <class TInputImage1, class TInputImage2=TInputImage1,
class TInputImage3=TInputImage1, class TOutputImage=TInputImage1>
class ITK_EXPORT TernaryMaximumImageFilter :
public
TernaryFunctorImageFilter<TInputImage1,TInputImage2,
TInputImage3,TOutputImage,
Function::Maximum3< typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TInputImage3::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef TernaryMaximumImageFilter Self;
typedef TernaryFunctorImageFilter<
TInputImage1,TInputImage2,
TInputImage3,TOutputImage,
Function::Maximum3< typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TInputImage3::PixelType,
typename TOutputImage::PixelType> > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(TernaryMaximumImageFilter,
TernaryFunctorImageFilter);
protected:
TernaryMaximumImageFilter() {}
virtual ~TernaryMaximumImageFilter() {}
private:
TernaryMaximumImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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