lib/fpa/Image/Functors/GradientImageFunctionBase.h

   1 #ifndef __FPA__IMAGE__FUNCTORS__GRADIENTIMAGEFUNCTIONBASE__H__
   2 #define __FPA__IMAGE__FUNCTORS__GRADIENTIMAGEFUNCTIONBASE__H__
   3
   4 #include <itkImageFunction.h>
   5
   6 namespace fpa
   7 {
   8   namespace Image
   9   {
  10     namespace Functors
  11     {
  12       /**
  13        * Base class to compute values based on image gradients (vector).
  14        * It allows incremental computation of the gradient.
  15        */
  16       template< class _TGradient >
  17       class GradientImageFunctionBase
  18         : public itk::ImageFunction< _TGradient, typename _TGradient::PixelType::ValueType, typename _TGradient::PixelType::ValueType >
  19       {
  20       public:
  21         // Types from input arguments
  22         typedef _TGradient                     TGradient;
  23         typedef typename _TGradient::PixelType TVector;
  24         typedef typename TVector::ValueType    TScalar;
  25         itkStaticConstMacro( Dimension, unsigned int, _TGradient::ImageDimension );
  26
  27         // Standard itk types
  28         typedef GradientImageFunctionBase                          Self;
  29         typedef itk::ImageFunction< _TGradient, TScalar, TScalar > Superclass;
  30         typedef itk::SmartPointer< Self >                          Pointer;
  31         typedef itk::SmartPointer< const Self >                    ConstPointer;
  32
  33         // Types from base itk::ImageFunction
  34         typedef typename Superclass::InputType           TInput;
  35         typedef typename Superclass::OutputType          TOutput;
  36         typedef typename Superclass::PointType           TPoint;
  37         typedef typename Superclass::ContinuousIndexType TContIndex;
  38         typedef typename Superclass::IndexType           TIndex;
  39
  40       public:
  41         itkTypeMacro( GradientImageFunctionBase, itkImageFunction );
  42
  43       public:
  44         virtual void Prepare( ) const;
  45         virtual TOutput Evaluate( const TPoint& p ) const ITK_OVERRIDE;
  46         virtual TOutput EvaluateAtIndex( const TIndex& i ) const ITK_OVERRIDE;
  47         virtual TOutput EvaluateAtContinuousIndex( const TContIndex& i ) const ITK_OVERRIDE;
  48
  49       protected:
  50         GradientImageFunctionBase( );
  51         virtual ~GradientImageFunctionBase( );
  52
  53         virtual TOutput _Evaluate( const TIndex& i ) const = 0;
  54
  55       private:
  56         // Purposely not implemented.
  57         GradientImageFunctionBase( const Self& );
  58         void operator=( const Self& );
  59       };
  60
  61     } // ecapseman
  62
  63   } // ecapseman
  64
  65 } // ecapseman
  66
  67 #ifndef ITK_MANUAL_INSTANTIATION
  68 #include <fpa/Image/Functors/GradientImageFunctionBase.hxx>
  69 #endif // ITK_MANUAL_INSTANTIATION
  70
  71 #endif // __FPA__IMAGE__FUNCTORS__GRADIENTIMAGEFUNCTIONBASE__H__
  72
  73 // eof - $RCSfile$