rtkFFTVarianceRampImageFilter.h

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/*=========================================================================
 *
 *  Copyright RTK 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
 *
 *         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 rtkFFTVarianceRampImageFilter_h
#define rtkFFTVarianceRampImageFilter_h

#include "rtkFFTRampImageFilter.h"
#include "rtkFFTProjectionsConvolutionImageFilter.h"
#include "itkHalfHermitianToRealInverseFFTImageFilter.h"

namespace rtk
{

template <class TInputImage, class TOutputImage = TInputImage, class TFFTPrecision = double>
class ITK_EXPORT FFTVarianceRampImageFilter : public rtk::FFTRampImageFilter<TInputImage, TOutputImage, TFFTPrecision>
{
public:
  typedef rtk::FFTRampImageFilter<TInputImage, TOutputImage, TFFTPrecision> Baseclass;

  typedef FFTVarianceRampImageFilter                                        Self;
  typedef rtk::FFTRampImageFilter<TInputImage, TOutputImage, TFFTPrecision> Superclass;
  typedef itk::SmartPointer<Self>                                           Pointer;
  typedef itk::SmartPointer<const Self>                                     ConstPointer;

  typedef typename Baseclass::InputImageType   InputImageType;
  typedef typename Baseclass::OutputImageType  OutputImageType;
  typedef typename Baseclass::FFTPrecisionType FFTPrecisionType;
  typedef typename Baseclass::IndexType        IndexType;
  typedef typename Baseclass::SizeType         SizeType;

  typedef typename Baseclass::FFTInputImageType     FFTInputImageType;
  typedef typename Baseclass::FFTInputImagePointer  FFTInputImagePointer;
  typedef typename Baseclass::FFTOutputImageType    FFTOutputImageType;
  typedef typename Baseclass::FFTOutputImagePointer FFTOutputImagePointer;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(FFTVarianceRampImageFilter);

protected:
  FFTVarianceRampImageFilter();
  ~FFTVarianceRampImageFilter() {}

  void
  UpdateFFTProjectionsConvolutionKernel(const SizeType size) override;

  FFTVarianceRampImageFilter(const Self &); // purposely not implemented
  void
  operator=(const Self &); // purposely not implemented
}; // end of class

} // end namespace rtk

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

#endif