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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkXorImageFilter.h,v $
Language: C++
Date: $Date: 2007-09-27 11:36:41 $
Version: $Revision: 1.6 $
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 __itkXorImageFilter_h
#define __itkXorImageFilter_h
#include "itkBinaryFunctorImageFilter.h"
#include "itkNumericTraits.h"
namespace itk
{
/** \class XorImageFilter
* \brief Implements the XOR logical operator pixel-wise between two images.
*
* This class is parametrized over the types of the two
* input images and the type of the output image.
* Numeric conversions (castings) are done by the C++ defaults.
*
* Since the logical XOR operation is only defined in C++ for integer
* types, the images passed to this filter must comply with the requirement
* of using integer pixel type.
*
* The total operation over one pixel will be
*
* output_pixel = static_cast<OutputPixelType>( input1_pixel ^ input2_pixel )
*
* Where "^" is the boolean XOR operator in C++.
*
* \ingroup IntensityImageFilters Multithreaded
*/
namespace Functor {
template< class TInput1, class TInput2=TInput1, class TOutput=TInput1 >
class XOR
{
public:
XOR() {};
~XOR() {};
bool operator!=( const XOR & ) const
{
return false;
}
bool operator==( const XOR & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput1 & A, const TInput2 & B)
{
return static_cast<TOutput>( A ^ B );
}
};
}
template <class TInputImage1, class TInputImage2=TInputImage1, class TOutputImage=TInputImage1>
class ITK_EXPORT XorImageFilter :
public
BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage,
Functor::XOR<
typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef XorImageFilter Self;
typedef BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage,
Functor::XOR<
typename TInputImage1::PixelType,
typename TInputImage2::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(XorImageFilter,
BinaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(Input1Input2OutputLogicalOperatorsCheck,
(Concept::LogicalOperators<typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType>));
/** End concept checking */
#endif
protected:
XorImageFilter() {}
virtual ~XorImageFilter() {}
private:
XorImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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