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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkMagnitudeAndPhaseToComplexImageFilter_h
#define itkMagnitudeAndPhaseToComplexImageFilter_h
#include "itkBinaryFunctorImageFilter.h"
namespace itk
{
/** \class MagnitudeAndPhaseToComplexImageFilter
*
* \brief Implements pixel-wise conversion of magnitude and phase 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:
* https://hdl.handle.net/1926/326
*
* \sa ComposeImageFilter
*
* \ingroup ITKImageIntensity
*/
namespace Functor
{
template< typename TInput1, typename TInput2, typename TOutput >
class MagnitudeAndPhaseToComplex
{
public:
MagnitudeAndPhaseToComplex() {}
~MagnitudeAndPhaseToComplex() {}
bool operator!=(const MagnitudeAndPhaseToComplex &) const
{
return false;
}
bool operator==(const MagnitudeAndPhaseToComplex & other) const
{
return !( *this != other );
}
inline std::complex< TOutput > operator()(const TInput1 & A, const TInput2 & B) const
{
return std::complex< TOutput >( std::polar( static_cast< TOutput >( A ), static_cast< TOutput >( B ) ) );
}
};
}
template< typename TInputImage1,
typename TInputImage2 = TInputImage1,
typename TOutputImage = itk::Image< std::complex< typename TInputImage1::PixelType >,
TInputImage1::ImageDimension > >
class MagnitudeAndPhaseToComplexImageFilter:
public BinaryFunctorImageFilter<
TInputImage1,
TInputImage2,
TOutputImage,
Functor::MagnitudeAndPhaseToComplex<
typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType::value_type > >
{
public:
/** Standard class typedefs. */
typedef MagnitudeAndPhaseToComplexImageFilter Self;
typedef BinaryFunctorImageFilter<
TInputImage1,
TInputImage2,
TOutputImage,
Functor::MagnitudeAndPhaseToComplex<
typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType::value_type > > Superclass;
typedef typename TInputImage1::PixelType InputPixel1Type;
typedef typename TInputImage2::PixelType InputPixel2Type;
typedef typename TOutputImage::PixelType OutputPixelType;
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(MagnitudeAndPhaseToComplexImageFilter, BinaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( Input1ConvertibleToDoubleCheck,
( Concept::Convertible< InputPixel1Type, double > ) );
itkConceptMacro( Input2ConvertibleToDoubleCheck,
( Concept::Convertible< InputPixel2Type, double > ) );
itkConceptMacro( DoubleConvertibleToOutputCheck,
( Concept::Convertible< double, OutputPixelType > ) );
// End concept checking
#endif
protected:
MagnitudeAndPhaseToComplexImageFilter() {}
virtual ~MagnitudeAndPhaseToComplexImageFilter() ITK_OVERRIDE {}
private:
ITK_DISALLOW_COPY_AND_ASSIGN(MagnitudeAndPhaseToComplexImageFilter);
};
} // end namespace itk
#endif
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