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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkRealAndImaginaryToComplexImageFilter.h
Language: C++
Date: $Date$
Version: $Revision$
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 __itkRealAndImaginaryToComplexImageFilter_h
#define __itkRealAndImaginaryToComplexImageFilter_h
#include "itkBinaryFunctorImageFilter.h"
namespace itk
{
/** \class RealAndImaginaryToComplexImageFilter
* \brief Implements pixel-wise conversion of real and imaginar data into
* complex voxels.
*
* This filter is parametrized over the types of the two
* input images and the type of the output image.
*
* The filter expect all images to have the same dimension
* (e.g. all 2D, or all 3D, or all ND)
*
* \ingroup IntensityImageFilters Multithreaded
*
* \weakgroup FourierTransform
*
* \author Simon K. Warfield simon.warfield@childrens.harvard.edu
*
* \note Attribution Notice. This research work was made possible by Grant
* Number R01 RR021885 (PI Simon K. Warfield, Ph.D.) from
* the National Center for Research Resources (NCRR), a component of the
* National Institutes of Health (NIH). Its contents are solely the
* responsibility of the authors and do not necessarily represent the
* official view of NCRR or NIH.
*
* This class was taken from the Insight Journal paper:
* http://insight-journal.org/midas/handle.php?handle=1926/326
*
* \sa MagnitudeAndPhaseToComplexImageFilter
*/
namespace Functor {
template< class TInput1, class TInput2, class TOutput>
class RealAndImaginaryToComplex
{
public:
RealAndImaginaryToComplex() {};
~RealAndImaginaryToComplex() {};
bool operator!=( const RealAndImaginaryToComplex & ) const
{
return false;
}
bool operator==( const RealAndImaginaryToComplex & other ) const
{
return !(*this != other);
}
inline std::complex<TOutput> operator()( const TInput1 & A, const TInput2 & B) const
{
return std::complex<TOutput>( static_cast<TOutput>(A), static_cast<TOutput>(B));
}
};
}
template <class TInputPixel1, class TInputPixel2, class TOutputPixel, unsigned int NDimension = 3>
class ITK_EXPORT RealAndImaginaryToComplexImageFilter :
public BinaryFunctorImageFilter<
Image < TInputPixel1, NDimension >,
Image < TInputPixel2, NDimension >,
Image < std::complex<TOutputPixel>, NDimension >,
Functor::RealAndImaginaryToComplex<
TInputPixel1,
TInputPixel2,
TOutputPixel
> >
{
public:
/** Standard class typedefs. */
typedef RealAndImaginaryToComplexImageFilter Self;
typedef BinaryFunctorImageFilter<
Image < TInputPixel1, NDimension >,
Image < TInputPixel2, NDimension >,
Image < std::complex<TOutputPixel>, NDimension >,
Functor::RealAndImaginaryToComplex<
TInputPixel1,
TInputPixel2,
TOutputPixel > > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(RealAndImaginaryToComplexImageFilter, BinaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(Input1ConvertibleToDoubleCheck,
(Concept::Convertible<TInputPixel1, double>));
itkConceptMacro(Input2ConvertibleToDoubleCheck,
(Concept::Convertible<TInputPixel2, double>));
itkConceptMacro(DoubleConvertibleToOutputCheck,
(Concept::Convertible<double, TOutputPixel>));
/** End concept checking */
#endif
protected:
RealAndImaginaryToComplexImageFilter() {}
virtual ~RealAndImaginaryToComplexImageFilter() {}
private:
RealAndImaginaryToComplexImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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