itkDirectFourierReconstructionImageToImageFilter.h

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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 __itkDirectFourierReconstructionImageToImageFilter_h
#define __itkDirectFourierReconstructionImageToImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkImage.h"

#include "itkVnlForwardFFTImageFilter.h"
#include "itkVnlInverseFFTImageFilter.h"

#include "itkImageRegionIteratorWithIndex.h"
#include "itkImageSliceConstIteratorWithIndex.h"

#include "itkComplexBSplineInterpolateImageFunction.h"

#include <cmath>

namespace itk
{
template< typename TInputImage, typename TOutputImage=TInputImage >
class DirectFourierReconstructionImageToImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:

  typedef DirectFourierReconstructionImageToImageFilter Self;

  typedef TInputImage                          InputImageType;
  typedef typename InputImageType::PixelType   InputPixelType;
  typedef TOutputImage                         OutputImageType;
  typedef typename OutputImageType::PixelType  OutputPixelType;

  typedef ImageToImageFilter< InputImageType, OutputImageType > Superclass;

  typedef SmartPointer< Self > Pointer;

  typedef SmartPointer< const Self > ConstPointer;

  itkNewMacro(Self);
  itkTypeMacro(DirectFourierReconstructionImageToImageFilter, ImageToImageFilter);

  typedef typename InputImageType::RegionType RegionType;

  typedef typename InputImageType::IndexType IndexType;

  typedef typename InputImageType::SizeType SizeType;

  typedef typename InputImageType::PointType PointType;

  typedef typename InputImageType::SpacingType SpacingType;

  typedef typename InputImageType::ConstPointer ConstInputImagePointer;

  typedef typename InputImageType::Pointer InputImagePointer;

  typedef typename OutputImageType::Pointer OutputImagePointer;

  itkSetMacro(ZeroPadding, unsigned short int);
  itkGetConstMacro(ZeroPadding, unsigned short int);

  itkSetMacro(OverSampling, unsigned short int);
  itkGetConstMacro(OverSampling, unsigned short int);

  itkSetMacro(Cutoff, double);
  itkGetConstMacro(Cutoff, double);

  itkSetMacro(AlphaRange, double);
  itkGetConstMacro(AlphaRange, double);

  itkSetMacro(AlphaDirection, unsigned short int);
  itkGetConstMacro(AlphaDirection, unsigned short int);

  itkSetMacro(ZDirection, unsigned short int);
  itkGetConstMacro(ZDirection, unsigned short int);

  itkSetMacro(RDirection, unsigned short int);
  itkGetConstMacro(RDirection, unsigned short int);

  itkSetMacro(RadialSplineOrder, unsigned short int);
  itkGetConstMacro(RadialSplineOrder, unsigned short int);

protected:
  DirectFourierReconstructionImageToImageFilter();

  ~DirectFourierReconstructionImageToImageFilter() {}

  void PrintSelf(std::ostream & os, Indent indent) const;

  void GenerateOutputInformation();

  void GenerateInputRequestedRegion();

  void GenerateData();

private:
  typedef ImageSliceConstIteratorWithIndex< InputImageType > InputSliceIteratorType;

  typedef Image< double, 1 >                                       LineImageType;
  typedef VnlForwardFFTImageFilter< LineImageType > FFTLineFilterType;

  typedef FFTLineFilterType::OutputImageType FFTLineType;

  typedef FFTLineFilterType::InputImageType ProjectionLineType;

  typedef ImageRegionIteratorWithIndex< FFTLineType > FFTLineIteratorType;

  typedef ComplexBSplineInterpolateImageFunction< FFTLineType, double, double > FFTLineInterpolatorType;

  typedef Image< std::complex<double>, 2>                          IFFTImageType;
  typedef VnlInverseFFTImageFilter< IFFTImageType > IFFTSliceFilterType;

  typedef IFFTSliceFilterType::InputImageType FFTSliceType;

  typedef IFFTSliceFilterType::OutputImageType OutputSliceType;

  typedef ImageRegionIteratorWithIndex< FFTSliceType > FFTSliceIteratorType;

  typedef ImageRegionIteratorWithIndex< OutputSliceType > OutputSliceIteratorType;

  DirectFourierReconstructionImageToImageFilter(const Self &);
  void operator=(const Self &);
};
} // namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkDirectFourierReconstructionImageToImageFilter.hxx"
#endif

#endif /* __itkDirectFourierReconstructionImageToImageFilter_h */