itkCannyEdgesDistanceAdvectionFieldFeatureGenerator.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    itkCannyEdgesDistanceAdvectionFieldFeatureGenerator.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 __itkCannyEdgesDistanceAdvectionFieldFeatureGenerator_h
#define __itkCannyEdgesDistanceAdvectionFieldFeatureGenerator_h

#include "itkFeatureGenerator.h"
#include "itkImage.h"
#include "itkImageSpatialObject.h"
#include "itkCastImageFilter.h"
#include "itkCannyEdgeDetectionRecursiveGaussianImageFilter.h"
#include "itkSignedMaurerDistanceMapImageFilter.h"
#include "itkGradientImageFilter.h"
#include "itkMultiplyImageFilter.h"

namespace itk
{

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

  itkNewMacro(Self);

  itkTypeMacro(CannyEdgesDistanceAdvectionFieldFeatureGenerator, 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( UpperThreshold, double );
  itkGetMacro( UpperThreshold, double );
  itkSetMacro( LowerThreshold, double );
  itkGetMacro( LowerThreshold, double );

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

  void  GenerateData ();

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

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

  typedef CastImageFilter<
    InputImageType, InternalImageType >               CastFilterType;
  typedef typename CastFilterType::Pointer            CastFilterPointer;
  typedef CannyEdgeDetectionRecursiveGaussianImageFilter<
    InternalImageType, InternalImageType >            CannyEdgeFilterType;
  typedef typename CannyEdgeFilterType::Pointer       CannyEdgeFilterPointer;

  typedef SignedMaurerDistanceMapImageFilter<
    InternalImageType, InternalImageType >            DistanceMapFilterType;
  typedef typename DistanceMapFilterType::Pointer     DistanceMapFilterPointer;  

  typedef GradientImageFilter< InternalImageType, 
          InternalPixelType, InternalPixelType >              GradientFilterType;
  typedef typename GradientFilterType::Pointer                GradientFilterPointer;
  typedef typename GradientFilterType::OutputImageType        CovariantVectorImageType;

  typedef typename CovariantVectorImageType::PixelType        OutputPixelType;
  typedef ImageSpatialObject< NDimension, OutputPixelType >   OutputImageSpatialObjectType;
  typedef Image< OutputPixelType, Dimension >                 OutputImageType;

  typedef MultiplyImageFilter< 
    CovariantVectorImageType, InternalImageType,
                     CovariantVectorImageType >       MultiplyFilterType;
  typedef typename MultiplyFilterType::Pointer        MultiplyFilterPointer;
  
  CastFilterPointer                                   m_CastFilter;
  DistanceMapFilterPointer                            m_DistanceMapFilter;
  CannyEdgeFilterPointer                              m_CannyFilter;
  GradientFilterPointer                               m_GradientFilter;
  MultiplyFilterPointer                               m_MultiplyFilter;

  double                                              m_UpperThreshold;
  double                                              m_LowerThreshold;
  double                                              m_Sigma;

};

} // end namespace itk

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

#endif