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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 itkComplexToPhaseImageFilter_h
#define itkComplexToPhaseImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkMath.h"
namespace itk
{
/** \class ComplexToPhaseImageFilter
* \brief Computes pixel-wise the modulus of a complex image.
*
* \ingroup IntensityImageFilters MultiThreaded
* \ingroup ITKImageIntensity
*/
namespace Functor
{
template< typename TInput, typename TOutput >
class ComplexToPhase
{
public:
ComplexToPhase() {}
~ComplexToPhase() {}
bool operator!=(const ComplexToPhase &) const
{
return false;
}
bool operator==(const ComplexToPhase & other) const
{
return !( *this != other );
}
inline TOutput operator()(const TInput & A) const
{
return static_cast<TOutput>( std::atan2( A.imag(), A.real() ) );
}
};
}
template< typename TInputImage, typename TOutputImage >
class ComplexToPhaseImageFilter:
public
UnaryFunctorImageFilter< TInputImage, TOutputImage,
Functor::ComplexToPhase<
typename TInputImage::PixelType,
typename TOutputImage::PixelType > >
{
public:
/** Standard class typedefs. */
typedef ComplexToPhaseImageFilter Self;
typedef UnaryFunctorImageFilter<
TInputImage, TOutputImage,
Functor::ComplexToPhase< 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(ComplexToPhaseImageFilter,
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( InputConvertibleToOutputCheck,
( Concept::Convertible< InputPixelValueType, OutputPixelType > ) );
// End concept checking
#endif
protected:
ComplexToPhaseImageFilter() {}
virtual ~ComplexToPhaseImageFilter() ITK_OVERRIDE {}
private:
ITK_DISALLOW_COPY_AND_ASSIGN(ComplexToPhaseImageFilter);
};
} // end namespace itk
#endif
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