lib/cpExtensions/Algorithms/MultiScaleGaussianImageFilter.h

   1 // -------------------------------------------------------------------------
   2 // @author Leonardo Florez-Valencia (florez-l@javeriana.edu.co)
   3 // -------------------------------------------------------------------------
   4
   5 #ifndef __CPEXTENSIONS__ALGORITHMS__MULTISCALEGAUSSIANIMAGEFILTER__H__
   6 #define __CPEXTENSIONS__ALGORITHMS__MULTISCALEGAUSSIANIMAGEFILTER__H__
   7
   8 #include <set>
   9 #include <itkImageToImageFilter.h>
  10
  11 namespace cpExtensions
  12 {
  13   namespace Algorithms
  14   {
  15     /**
  16      */
  17     template< class I, class O >
  18     class MultiScaleGaussianImageFilter
  19       : public itk::ImageToImageFilter< I, O >
  20     {
  21     public:
  22       typedef MultiScaleGaussianImageFilter   Self;
  23       typedef itk::ImageToImageFilter< I, O > Superclass;
  24       typedef itk::SmartPointer< Self >       Pointer;
  25       typedef itk::SmartPointer< const Self > ConstPointer;
  26
  27       typedef I TInputImage;
  28       typedef O TOutputImage;
  29
  30       typedef std::set< double > TScalesContainer;
  31
  32       enum FilterId
  33       {
  34         Gradient = 0,
  35         GradientMagnitude,
  36         Hessian,
  37         None
  38       };
  39
  40     protected:
  41       /**
  42        */
  43       class _Greater
  44       {
  45       public:
  46         typedef typename O::PixelType _T;
  47
  48       public:
  49         _Greater( );
  50         virtual ~_Greater( );
  51         bool operator!=( const _Greater& b ) const;
  52         bool operator==( const _Greater& b ) const;
  53         inline _T operator()( const _T& a ) const;
  54         inline _T operator()( const _T& a, const _T& b ) const;
  55       };
  56
  57     public:
  58       itkNewMacro( Self );
  59       itkTypeMacro( MultiScaleGaussianImageFilter, itkImageToImageFilter );
  60
  61     public:
  62       void SetFilterToGradient( );
  63       void SetFilterToGradientMagnitude( );
  64       void SetFilterToHessian( );
  65
  66       bool IsGradientFilter( ) const;
  67       bool IsGradientMagnitudeFilter( ) const;
  68       bool IsHessianFilter( ) const;
  69
  70       void AddScale( const double& s );
  71       unsigned long GetNumberOfScales( ) const;
  72
  73     protected:
  74       MultiScaleGaussianImageFilter( );
  75       virtual ~MultiScaleGaussianImageFilter( );
  76
  77       virtual void GenerateData( );
  78
  79       template< class F >
  80       void _GenerateData( );
  81
  82     private:
  83       // Purposely not implemented.
  84       MultiScaleGaussianImageFilter( const Self& );
  85       void operator=( const Self& );
  86
  87     protected:
  88       TScalesContainer m_Scales;
  89       FilterId m_FilterId;
  90     };
  91
  92   } // ecapseman
  93
  94 } // ecapseman
  95
  96 #ifndef ITK_MANUAL_INSTANTIATION
  97 #include <cpExtensions/Algorithms/MultiScaleGaussianImageFilter.hxx>
  98 #endif // ITK_MANUAL_INSTANTIATION
  99
 100 #endif // __CPEXTENSIONS__ALGORITHMS__MULTISCALEGAUSSIANIMAGEFILTER__H__
 101
 102 // eof - $RCSfile$