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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkAbsImageFilter.h,v $
Language: C++
Date: $Date: 2007-09-27 11:36:39 $
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 __itkAbsImageFilter_h
#define __itkAbsImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkConceptChecking.h"
namespace itk
{
/** \class AbsImageFilter
* \brief Computes the ABS(x) pixel-wise
*
* \ingroup IntensityImageFilters Multithreaded
*/
namespace Function {
template< class TInput, class TOutput>
class Abs
{
public:
Abs() {}
~Abs() {}
bool operator!=( const Abs & ) const
{
return false;
}
bool operator==( const Abs & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput & A )
{ return (TOutput)( ( A > 0 ) ? A : -A ); }
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT AbsImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::Abs<
typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef AbsImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::Abs< 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(AbsImageFilter,
UnaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(ConvertibleCheck,
(Concept::Convertible<typename TInputImage::PixelType,
typename TOutputImage::PixelType>));
itkConceptMacro(InputGreaterThanIntCheck,
(Concept::GreaterThanComparable<typename TInputImage::PixelType, int>));
/** End concept checking */
#endif
protected:
AbsImageFilter() {}
virtual ~AbsImageFilter() {}
private:
AbsImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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