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_EXPORT MultiScaleHessianBasedMeasureImageFilter:
  public
  ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef MultiScaleHessianBasedMeasureImageFilter        Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;

  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  typedef TInputImage   InputImageType;
  typedef TOutputImage  OutputImageType;
  typedef THessianImage HessianImageType;

  typedef ImageToImageFilter< HessianImageType, OutputImageType  > HessianToMeasureFilterType;

  typedef typename TInputImage::PixelType   InputPixelType;
  typedef typename TOutputImage::PixelType  OutputPixelType;
  typedef typename TOutputImage::RegionType OutputRegionType;

  itkStaticConstMacro(ImageDimension, unsigned int,  InputImageType ::ImageDimension);

  typedef float                                                            ScalesPixelType;
  typedef Image< ScalesPixelType, itkGetStaticConstMacro(ImageDimension) > ScalesImageType;

  typedef HessianRecursiveGaussianImageFilter< InputImageType, HessianImageType > HessianFilterType;

  typedef Image< double, itkGetStaticConstMacro(ImageDimension) > UpdateBufferType;
  typedef typename UpdateBufferType::ValueType                    BufferValueType;

  typedef typename Superclass::DataObjectPointer 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);
  itkGetObjectMacro(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;

  void EnlargeOutputRequestedRegion(DataObject *);

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

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

  typedef ProcessObject::DataObjectPointerArraySizeType DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  virtual DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx);

protected:
  MultiScaleHessianBasedMeasureImageFilter();
  ~MultiScaleHessianBasedMeasureImageFilter() {}
  void PrintSelf(std::ostream & os, Indent indent) const;

  void GenerateData(void);

private:
  void UpdateMaximumResponse(double sigma);

  double ComputeSigmaValue(int scaleLevel);

  void AllocateUpdateBuffer();

  //purposely not implemented
  MultiScaleHessianBasedMeasureImageFilter(const Self &);
  void operator=(const Self &); //purposely not implemented

  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