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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkDivideImageFilter.h,v $
Language: C++
Date: $Date: 2007-12-08 17:18:04 $
Version: $Revision: 1.13 $
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 __itkDivideImageFilter_h
#define __itkDivideImageFilter_h
#include "itkBinaryFunctorImageFilter.h"
#include "itkNumericTraits.h"
namespace itk
{
/** \class DivideImageFilter
* \brief Implements an operator for pixel-wise division of two images.
*
* This class is parametrized over the types of the two
* input images and the type of the output image. When the divisor is zero,
* the division result is set to the maximum number that can be represneted by default to
* avoid exception. Numeric conversions (castings) are done by the C++ defaults.
*
* \ingroup IntensityImageFilters Multithreaded
*/
namespace Function {
template< class TInput1, class TInput2, class TOutput>
class Div
{
public:
Div() {};
~Div() {};
bool operator!=( const Div & ) const
{
return false;
}
bool operator==( const Div & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput1 & A, const TInput2 & B)
{
if(B != (TInput2) 0)
{
return (TOutput)(A / B);
}
else
{
return NumericTraits<TOutput>::max(A);
}
}
};
}
template <class TInputImage1, class TInputImage2, class TOutputImage>
class ITK_EXPORT DivideImageFilter :
public
BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage,
Function::Div<
typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType> >
{
public:
/**
* Standard "Self" typedef.
*/
typedef DivideImageFilter Self;
/**
* Standard "Superclass" typedef.
*/
typedef BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage,
Function::Div<
typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType>
> Superclass;
/**
* Smart pointer typedef support
*/
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/**
* Method for creation through the object factory.
*/
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(DivideImageFilter,
BinaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(IntConvertibleToInput2Check,
(Concept::Convertible<int, typename TInputImage2::PixelType>));
itkConceptMacro(Input1Input2OutputDivisionOperatorsCheck,
(Concept::DivisionOperators<typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType>));
/** End concept checking */
#endif
protected:
DivideImageFilter() {}
virtual ~DivideImageFilter() {}
DivideImageFilter(const Self&) {}
void operator=(const Self&) {}
};
} // end namespace itk
#endif
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