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niblack_formula.hh
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25 
26 #ifndef SCRIBO_BINARIZATION_INTERNAL_NIBLACK_FORMULA_HH
27 # define SCRIBO_BINARIZATION_INTERNAL_NIBLACK_FORMULA_HH
28 
29 
34 
35 // FIXME: Having an unused parameter to fulfill the required interface
36 // may not be the best solution...
37 
38 // Setup default Niblack's formula parameters values.
39 # define SCRIBO_DEFAULT_NIBLACK_K -0.2
40 
41 
42 
43 namespace scribo
44 {
45 
46  namespace binarization
47  {
48 
49  namespace internal
50  {
51 
53  {
54 
65  double operator()(const double m_x_y, const double s_x_y,
66  const double K) const;
67 
72  double operator()(const double m_x_y, const double s_x_y) const;
73 
74  };
75 
76 
77 # ifndef MLN_INCLUDE_ONLY
78 
79  inline
80  double
81  niblack_formula::operator()(const double m_x_y, const double s_x_y,
82  const double K) const
83  {
84  return m_x_y + K * s_x_y;
85  }
86 
87  inline
88  double
89  niblack_formula::operator()(const double m_x_y, const double s_x_y) const
90  {
91  return (*this)(m_x_y, s_x_y,
92  SCRIBO_DEFAULT_NIBLACK_K);
93  }
94 
95 
96 # endif // ! MLN_INCLUDE_ONLY
97 
98  } // end of namespace scribo::binarization::internal
99 
100  } // end of namespace scribo::binarization
101 
102 } // end of namespace scribo
103 
104 #endif // ! SCRIBO_BINARIZATION_INTERNAL_NIBLACK_FORMULA_HH