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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSquareImageFilter.h,v $
Language: C++
Date: $Date: 2007-09-27 11:36:41 $
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 __itkSquareImageFilter_h
#define __itkSquareImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
namespace itk
{
/** \class SquareImageFilter
* \brief Computes the square of the intensity values pixel-wise
*
* \ingroup IntensityImageFilters Multithreaded
*/
namespace Function {
template< class TInput, class TOutput>
class Square
{
public:
typedef typename NumericTraits<TInput>::RealType RealType;
Square() {}
~Square() {}
bool operator!=( const Square & ) const
{
return false;
}
bool operator==( const Square & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput & A )
{
const RealType ra = static_cast<RealType>( A );
return static_cast<TOutput>( ra * ra );
}
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT SquareImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::Square< typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef SquareImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::Square< typename TInputImage::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(SquareImageFilter,
UnaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputHasNumericTraitsCheck,
(Concept::HasNumericTraits<typename TInputImage::PixelType>));
itkConceptMacro(RealTypeMultiplyOperatorCheck,
(Concept::MultiplyOperator<typename NumericTraits<typename TInputImage::PixelType>::RealType>));
/** End concept checking */
#endif
protected:
SquareImageFilter() {}
virtual ~SquareImageFilter() {}
private:
SquareImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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