ITK  4.3.0
Insight Segmentation and Registration Toolkit
itkLaplacianOperator.h
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18 #ifndef __itkLaplacianOperator_h
19 #define __itkLaplacianOperator_h
20 
22 
23 namespace itk
24 {
62 template< class TPixel, unsigned int VDimension = 2,
63  class TAllocator = NeighborhoodAllocator< TPixel > >
64 class ITK_EXPORT LaplacianOperator:
65  public NeighborhoodOperator< TPixel, VDimension, TAllocator >
66 {
67 public:
68 
71 
74 
75  typedef typename Superclass::PixelType PixelType;
76  typedef typename Superclass::SizeType SizeType;
77 
80  {
81  for ( unsigned i = 0; i < VDimension; ++i )
82  {
83  m_DerivativeScalings[i] = 1.0;
84  }
85  }
87 
89  LaplacianOperator(const Self & other):
90  NeighborhoodOperator< TPixel, VDimension, TAllocator >(other)
91  {
92  for ( unsigned i = 0; i < VDimension; ++i )
93  {
94  m_DerivativeScalings[i] = other.m_DerivativeScalings[i];
95  }
96  }
98 
100  void CreateOperator();
101 
103  Self & operator=(const Self & other)
104  {
105  Superclass::operator=(other);
106  return *this;
107  }
109 
111  virtual void PrintSelf(std::ostream & os, Indent i) const
112  {
113  os << i << "LaplacianOperator { this=" << this
114  << "}" << std::endl;
115  Superclass::PrintSelf( os, i.GetNextIndent() );
116  }
118 
122  void SetDerivativeScalings(const double *s);
123 
124 protected:
128 
130  CoefficientVector GenerateCoefficients();
131 
134  void Fill(const CoefficientVector &);
135 
136 private:
138  double m_DerivativeScalings[VDimension];
139 };
140 } // namespace itk
141 
142 #ifndef ITK_MANUAL_INSTANTIATION
143 #include "itkLaplacianOperator.hxx"
144 #endif
145 
146 #endif
147