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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 itkVnlComplexToComplexFFTImageFilter_h
#define itkVnlComplexToComplexFFTImageFilter_h
#include "itkComplexToComplexFFTImageFilter.h"
#include "itkFFTImageFilterFactory.h"
namespace itk
{
/**
* \class VnlComplexToComplexFFTImageFilter
*
* \brief VNL based complex to complex Fast Fourier Transform.
*
* This filter requires input images with sizes which are a power of two.
*
* \ingroup FourierTransform
* \ingroup ITKFFT
*
* \sa ComplexToComplexFFTImageFilter
* \sa FFTWComplexToComplexFFTImageFilter
* \sa VnlForwardFFTImageFilter
* \sa VnlInverseFFTImageFilter
*/
template <typename TInputImage, typename TOutputImage = TInputImage>
class ITK_TEMPLATE_EXPORT VnlComplexToComplexFFTImageFilter
: public ComplexToComplexFFTImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(VnlComplexToComplexFFTImageFilter);
/** Standard class type aliases. */
using Self = VnlComplexToComplexFFTImageFilter;
using Superclass = ComplexToComplexFFTImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using typename Superclass::ImageType;
using PixelType = typename ImageType::PixelType;
using typename Superclass::InputImageType;
using typename Superclass::OutputImageType;
using OutputImageRegionType = typename OutputImageType::RegionType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(VnlComplexToComplexFFTImageFilter);
static constexpr unsigned int ImageDimension = ImageType::ImageDimension;
protected:
VnlComplexToComplexFFTImageFilter();
~VnlComplexToComplexFFTImageFilter() override = default;
void
BeforeThreadedGenerateData() override;
void
DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
};
template <>
struct FFTImageFilterTraits<VnlComplexToComplexFFTImageFilter>
{
template <typename TUnderlying>
using InputPixelType = std::complex<TUnderlying>;
template <typename TUnderlying>
using OutputPixelType = std::complex<TUnderlying>;
using FilterDimensions = std::integer_sequence<unsigned int, 4, 3, 2, 1>;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkVnlComplexToComplexFFTImageFilter.hxx"
#endif
#endif // itkVnlComplexToComplexFFTImageFilter_h
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