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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 itkVnlInverseFFTImageFilter_h
#define itkVnlInverseFFTImageFilter_h
#include "itkInverseFFTImageFilter.h"
#include "itkImage.h"
#include "vnl/algo/vnl_fft_base.h"
namespace itk
{
/** \class VnlInverseFFTImageFilter
*
* \brief VNL-based reverse Fast Fourier Transform.
*
* The input image size must be a multiple of combinations of 2s, 3s,
* and/or 5s in all dimensions.
*
* \ingroup FourierTransform
*
* \sa InverseFFTImageFilter
* \ingroup ITKFFT
*
* \wiki
* \wikiexample{SpectralAnalysis/CrossCorrelationInFourierDomain,Compute the cross-correlation of two images in the Fourier domain}
* \endwiki
*/
template< typename TInputImage, typename TOutputImage=Image< typename TInputImage::PixelType::value_type, TInputImage::ImageDimension> >
class ITK_TEMPLATE_EXPORT VnlInverseFFTImageFilter:
public InverseFFTImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard class typedefs. */
typedef TInputImage InputImageType;
typedef typename InputImageType::PixelType InputPixelType;
typedef typename InputImageType::SizeType InputSizeType;
typedef typename InputImageType::SizeValueType InputSizeValueType;
typedef TOutputImage OutputImageType;
typedef typename OutputImageType::PixelType OutputPixelType;
typedef typename OutputImageType::SizeType OutputSizeType;
typedef VnlInverseFFTImageFilter Self;
typedef InverseFFTImageFilter< TInputImage, TOutputImage > Superclass;
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(VnlInverseFFTImageFilter,
InverseFFTImageFilter);
/** Extract the dimensionality of the images. They must be the
* same. */
itkStaticConstMacro(ImageDimension, unsigned int,
TOutputImage::ImageDimension);
itkStaticConstMacro(InputImageDimension, unsigned int,
TInputImage::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension);
SizeValueType GetSizeGreatestPrimeFactor() const ITK_OVERRIDE;
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( PixelUnsignedIntDivisionOperatorsCheck,
( Concept::DivisionOperators< OutputPixelType, unsigned int > ) );
itkConceptMacro( ImageDimensionsMatchCheck,
( Concept::SameDimension< InputImageDimension, OutputImageDimension > ) );
// End concept checking
#endif
protected:
VnlInverseFFTImageFilter() {}
virtual ~VnlInverseFFTImageFilter() ITK_OVERRIDE {}
virtual void GenerateData() ITK_OVERRIDE; // generates output from input
private:
ITK_DISALLOW_COPY_AND_ASSIGN(VnlInverseFFTImageFilter);
typedef vnl_vector< InputPixelType > SignalVectorType;
};
}
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkVnlInverseFFTImageFilter.hxx"
#endif
#endif
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