itkVectorMeanDiffusionImageFilter.h

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/*=========================================================================
 *
 *  Copyright UMC Utrecht and contributors
 *
 *  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 itkVectorMeanDiffusionImageFilter_h
#define itkVectorMeanDiffusionImageFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkImage.h"
#include "itkVector.h"
#include "itkNumericTraits.h"
 
#include "itkRescaleIntensityImageFilter.h"
 
namespace itk
{
 
template <class TInputImage, class TGrayValueImage>
class ITK_TEMPLATE_EXPORT VectorMeanDiffusionImageFilter : public ImageToImageFilter<TInputImage, TInputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(VectorMeanDiffusionImageFilter);

  using InputImageType = TInputImage;
  using GrayValueImageType = TGrayValueImage;
  using GrayValueImagePointer = typename GrayValueImageType::Pointer;

  using Self = VectorMeanDiffusionImageFilter;
  using Superclass = ImageToImageFilter<InputImageType, InputImageType>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkStaticConstMacro(InputImageDimension, unsigned int, TInputImage::ImageDimension);

  itkNewMacro(Self);

  itkTypeMacro(VectorMeanDiffusionImageFilter, ImageToImageFilter);

  using InputPixelType = typename InputImageType::PixelType;
  using ValueType = typename InputPixelType::ValueType;
  // typedef typename NumericTraits<InputPixelType>::RealType    InputRealType;
  using InputImageRegionType = typename InputImageType::RegionType;
  using InputSizeType = typename InputImageType::SizeType;
  using IndexType = typename InputImageType::IndexType;
  using VectorRealType = Vector<double, Self::InputImageDimension>;
  using DoubleImageType = Image<double, Self::InputImageDimension>;
  using DoubleImagePointer = typename DoubleImageType::Pointer;
  using GrayValuePixelType = typename GrayValueImageType::PixelType;

  using RescaleImageFilterType = RescaleIntensityImageFilter<GrayValueImageType, DoubleImageType>;
  using RescaleImageFilterPointer = typename RescaleImageFilterType::Pointer;

  itkSetMacro(Radius, InputSizeType);

  itkGetConstReferenceMacro(Radius, InputSizeType);

  void
  GenerateInputRequestedRegion() override;

  itkSetMacro(NumberOfIterations, unsigned int);
  itkGetConstMacro(NumberOfIterations, unsigned int);

  void
  SetGrayValueImage(GrayValueImageType * _arg);
 
  typename GrayValueImageType::Pointer
  GetGrayValueImage()
  {
    return this->m_GrayValueImage.GetPointer();
  }
 
 
protected:
  VectorMeanDiffusionImageFilter();
  ~VectorMeanDiffusionImageFilter() override = default;
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

  void
  GenerateData() override;
 
private:
  InputSizeType m_Radius{};
  unsigned int  m_NumberOfIterations{};

  GrayValueImagePointer m_GrayValueImage{};
  DoubleImagePointer    m_Cx{};
 
  RescaleImageFilterPointer m_RescaleFilter{};

  void
  FilterGrayValueImage();
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkVectorMeanDiffusionImageFilter.hxx"
#endif
 
#endif // end #ifndef itkVectorMeanDiffusionImageFilter_h