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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkComplexToModulusImageFilter.h,v $
Language: C++
Date: $Date: 2007-09-27 11:36:40 $
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 __itkComplexToModulusImageFilter_h
#define __itkComplexToModulusImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "vnl/vnl_math.h"
namespace itk
{
/** \class ComplexToModulusImageFilter
* \brief Computes pixel-wise the Modulus of a complex image.
*
* \ingroup IntensityImageFilters Multithreaded
*/
namespace Function {
template< class TInput, class TOutput>
class ComplexToModulus
{
public:
ComplexToModulus() {}
~ComplexToModulus() {}
bool operator!=( const ComplexToModulus & ) const
{
return false;
}
bool operator==( const ComplexToModulus & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput & A )
{ return (TOutput)( vcl_sqrt(A.real() * A.real() +
A.imag() * A.imag() ) ); }
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT ComplexToModulusImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::ComplexToModulus<
typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef ComplexToModulusImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::ComplexToModulus< 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(ComplexToModulusImageFilter,
UnaryFunctorImageFilter);
typedef typename TInputImage::PixelType InputPixelType;
typedef typename TOutputImage::PixelType OutputPixelType;
typedef typename NumericTraits< InputPixelType >::ValueType InputPixelValueType;
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputMultiplyOperatorCheck,
(Concept::MultiplyOperator<InputPixelValueType>));
/** End concept checking */
#endif
protected:
ComplexToModulusImageFilter() {}
virtual ~ComplexToModulusImageFilter() {}
private:
ComplexToModulusImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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