itkGradientMagnitudeSigmoidFeatureGenerator.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    itkGradientMagnitudeSigmoidFeatureGenerator.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkGradientMagnitudeSigmoidFeatureGenerator_h
#define __itkGradientMagnitudeSigmoidFeatureGenerator_h

#include "itkFeatureGenerator.h"
#include "itkImage.h"
#include "itkImageSpatialObject.h"
#include "itkGradientMagnitudeRecursiveGaussianImageFilter.h"
#include "itkSigmoidImageFilter.h"

namespace itk
{

template <unsigned int NDimension>
class ITK_EXPORT GradientMagnitudeSigmoidFeatureGenerator : public FeatureGenerator<NDimension>
{
public:
  typedef GradientMagnitudeSigmoidFeatureGenerator          Self;
  typedef FeatureGenerator<NDimension>                      Superclass;
  typedef SmartPointer<Self>                                Pointer;
  typedef SmartPointer<const Self>                          ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(GradientMagnitudeSigmoidFeatureGenerator, FeatureGenerator);

  itkStaticConstMacro(Dimension, unsigned int, NDimension);

  typedef signed short                                      InputPixelType;
  typedef Image< InputPixelType, Dimension >                InputImageType;
  typedef ImageSpatialObject< NDimension, InputPixelType >  InputImageSpatialObjectType;
  typedef typename InputImageSpatialObjectType::Pointer     InputImageSpatialObjectPointer;
  typedef typename Superclass::SpatialObjectType            SpatialObjectType;

  using ProcessObject::SetInput;
  void SetInput( const SpatialObjectType * input );
  const SpatialObjectType * GetInput() const;

  const SpatialObjectType * GetFeature() const;

  itkSetMacro( Sigma, double );
  itkGetMacro( Sigma, double );

  itkSetMacro( Alpha, double );
  itkGetMacro( Alpha, double );

  itkSetMacro( Beta, double );
  itkGetMacro( Beta, double );

protected:
  GradientMagnitudeSigmoidFeatureGenerator();
  virtual ~GradientMagnitudeSigmoidFeatureGenerator();
  void PrintSelf(std::ostream& os, Indent indent) const;

  void  GenerateData ();

private:
  GradientMagnitudeSigmoidFeatureGenerator(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  typedef float                                       InternalPixelType;
  typedef Image< InternalPixelType, Dimension >       InternalImageType;

  typedef InternalPixelType                           OutputPixelType;
  typedef InternalImageType                           OutputImageType;

  typedef ImageSpatialObject< NDimension, OutputPixelType >  OutputImageSpatialObjectType;

  typedef GradientMagnitudeRecursiveGaussianImageFilter<
    InputImageType, InternalImageType >               GradientFilterType;
  typedef typename GradientFilterType::Pointer        GradientFilterPointer;

  typedef SigmoidImageFilter<
    InternalImageType, OutputImageType >              SigmoidFilterType;
  typedef typename SigmoidFilterType::Pointer         SigmoidFilterPointer;

  GradientFilterPointer           m_GradientFilter;
  SigmoidFilterPointer            m_SigmoidFilter;

  double                          m_Sigma;
  double                          m_Alpha;
  double                          m_Beta;
};

} // end namespace itk

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

#endif