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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 itkInverse1DFFTImageFilter_h
#define itkInverse1DFFTImageFilter_h
#include <complex>
#include "itkImageToImageFilter.h"
#include "itkMacro.h"
namespace itk
{
/** \class Inverse1DFFTImageFilter
* \brief Perform the Fast Fourier Transform, in the reverse direction, with
* real output, but only along one dimension.
*
* \ingroup ITKFFT
* \ingroup FourierTransform
*/
template <typename TInputImage,
typename TOutputImage =
Image<typename NumericTraits<typename TInputImage::PixelType>::ValueType, TInputImage::ImageDimension>>
class ITK_TEMPLATE_EXPORT Inverse1DFFTImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(Inverse1DFFTImageFilter);
/** Standard class type alias. */
using InputImageType = TInputImage;
using OutputImageType = TOutputImage;
using OutputImageRegionType = typename OutputImageType::RegionType;
using Self = Inverse1DFFTImageFilter;
using Superclass = ImageToImageFilter<InputImageType, OutputImageType>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Dimension of the underlying image. */
static constexpr unsigned int ImageDimension = InputImageType::ImageDimension;
itkOverrideGetNameOfClassMacro(Inverse1DFFTImageFilter);
/** Customized object creation methods that support configuration-based
* selection of FFT implementation.
*
* Default implementation is VnlFFT1D.
*/
itkFactoryOnlyNewMacro(Self);
/** Get the direction in which the filter is to be applied. */
itkGetConstMacro(Direction, unsigned int);
/** Set the direction in which the filter is to be applied. */
itkSetClampMacro(Direction, unsigned int, 0, InputImageType::ImageDimension - 1);
/** Get the greatest supported prime factor. */
virtual SizeValueType
GetSizeGreatestPrimeFactor() const
{
return 2;
}
protected:
Inverse1DFFTImageFilter();
~Inverse1DFFTImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
void
GenerateInputRequestedRegion() override;
void
EnlargeOutputRequestedRegion(DataObject * output) override;
/** Direction in which the filter is to be applied
* this should be in the range [0,ImageDimension-1]. */
unsigned int m_Direction{ 0 };
private:
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkInverse1DFFTImageFilter.hxx"
#endif
#ifdef ITK_FFTIMAGEFILTERINIT_FACTORY_REGISTER_MANAGER
# include "itkFFTImageFilterInitFactoryRegisterManager.h"
#endif
#endif // itkInverse1DFFTImageFilter_h
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