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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkComplexToModulusImageFilter_h
#define itkComplexToModulusImageFilter_h
#include "itkUnaryGeneratorImageFilter.h"
#include "itkMath.h"
namespace itk
{
/** \class ComplexToModulusImageFilter
* \brief Computes pixel-wise the Modulus of a complex image.
*
* \ingroup IntensityImageFilters MultiThreaded
* \ingroup ITKImageIntensity
*/
namespace Functor
{
template <typename TInput, typename TOutput>
class ComplexToModulus
{
public:
bool
operator==(const ComplexToModulus &) const
{
return true;
}
ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION(ComplexToModulus);
inline TOutput
operator()(const TInput & A) const
{
return (TOutput)(std::sqrt(A.real() * A.real() + A.imag() * A.imag()));
}
};
} // namespace Functor
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT ComplexToModulusImageFilter : public UnaryGeneratorImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ComplexToModulusImageFilter);
/** Standard class type aliases. */
using Self = ComplexToModulusImageFilter;
using Superclass = UnaryGeneratorImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using FunctorType = Functor::ComplexToModulus<typename TInputImage::PixelType, typename TOutputImage::PixelType>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ComplexToModulusImageFilter);
using InputPixelType = typename TInputImage::PixelType;
using OutputPixelType = typename TOutputImage::PixelType;
using InputPixelValueType = typename NumericTraits<InputPixelType>::ValueType;
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(InputMultiplyOperatorCheck, (Concept::MultiplyOperator<InputPixelValueType>));
// End concept checking
#endif
protected:
ComplexToModulusImageFilter()
{
#if !defined(ITK_WRAPPING_PARSER)
Superclass::SetFunctor(FunctorType());
#endif
}
~ComplexToModulusImageFilter() override = default;
};
} // end namespace itk
#endif
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