itkMultiScaleHessianBasedMeasureImageFilter.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 itkMultiScaleHessianBasedMeasureImageFilter_h
#define itkMultiScaleHessianBasedMeasureImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkHessianRecursiveGaussianImageFilter.h"

namespace itk
{
template< typename TInputImage,
          typename THessianImage,
          typename TOutputImage = TInputImage >
class ITK_TEMPLATE_EXPORT MultiScaleHessianBasedMeasureImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(MultiScaleHessianBasedMeasureImageFilter);

  using Self = MultiScaleHessianBasedMeasureImageFilter;
  using Superclass = ImageToImageFilter< TInputImage, TOutputImage >;

  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  using HessianImageType = THessianImage;

  using HessianToMeasureFilterType = ImageToImageFilter< HessianImageType, OutputImageType  >;

  using InputPixelType = typename TInputImage::PixelType;
  using OutputPixelType = typename TOutputImage::PixelType;
  using OutputRegionType = typename TOutputImage::RegionType;

  static constexpr unsigned int ImageDimension = InputImageType ::ImageDimension;

  using ScalesPixelType = float;
  using ScalesImageType = Image< ScalesPixelType, Self::ImageDimension >;

  using HessianFilterType = HessianRecursiveGaussianImageFilter< InputImageType, HessianImageType >;

  using UpdateBufferType = Image< double, Self::ImageDimension >;
  using BufferValueType = typename UpdateBufferType::ValueType;

  using DataObjectPointer = typename Superclass::DataObjectPointer;

  itkNewMacro(Self);

  itkTypeMacro(MultiScaleHessianBasedMeasureImageFilter,
               ImageToImageFilter);

  itkSetMacro(SigmaMinimum, double);
  itkGetConstMacro(SigmaMinimum, double);

  itkSetMacro(SigmaMaximum, double);
  itkGetConstMacro(SigmaMaximum, double);

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

  itkSetObjectMacro(HessianToMeasureFilter, HessianToMeasureFilterType);
  itkGetModifiableObjectMacro(HessianToMeasureFilter, HessianToMeasureFilterType);

  itkSetMacro(NonNegativeHessianBasedMeasure, bool);
  itkGetConstMacro(NonNegativeHessianBasedMeasure, bool);
  itkBooleanMacro(NonNegativeHessianBasedMeasure);

  typedef enum { EquispacedSigmaSteps = 0,
                 LogarithmicSigmaSteps = 1 } SigmaStepMethodType;

  itkSetMacro(SigmaStepMethod, SigmaStepMethodType);
  itkGetConstMacro(SigmaStepMethod, SigmaStepMethodType);

  void SetSigmaStepMethodToEquispaced();

  void SetSigmaStepMethodToLogarithmic();

  const HessianImageType * GetHessianOutput() const;

  const ScalesImageType * GetScalesOutput() const;

  itkSetMacro(GenerateScalesOutput, bool);
  itkGetConstMacro(GenerateScalesOutput, bool);
  itkBooleanMacro(GenerateScalesOutput);

  itkSetMacro(GenerateHessianOutput, bool);
  itkGetConstMacro(GenerateHessianOutput, bool);
  itkBooleanMacro(GenerateHessianOutput);

  using DataObjectPointerArraySizeType = ProcessObject::DataObjectPointerArraySizeType;

protected:
  MultiScaleHessianBasedMeasureImageFilter();
  ~MultiScaleHessianBasedMeasureImageFilter() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void GenerateData() override;

  void EnlargeOutputRequestedRegion(DataObject *) override;

  using Superclass::MakeOutput;
  DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx) override;

private:
  void UpdateMaximumResponse(double sigma);

  double ComputeSigmaValue(int scaleLevel);

  void AllocateUpdateBuffer();

  bool m_NonNegativeHessianBasedMeasure;

  double m_SigmaMinimum;
  double m_SigmaMaximum;

  unsigned int        m_NumberOfSigmaSteps;
  SigmaStepMethodType m_SigmaStepMethod;

  typename HessianToMeasureFilterType::Pointer m_HessianToMeasureFilter;

  typename HessianFilterType::Pointer m_HessianFilter;

  typename UpdateBufferType::Pointer m_UpdateBuffer;

  bool m_GenerateScalesOutput;
  bool m_GenerateHessianOutput;
};
} // end namespace itk

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

#endif