ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkKLMSegmentationBorder.h
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18 #ifndef __itkKLMSegmentationBorder_h
19 #define __itkKLMSegmentationBorder_h
20 
21 #include "itkSegmentationBorder.h"
23 #include "itkMacro.h"
24 
25 #include "vnl/vnl_math.h"
26 #include "vnl/vnl_vector.h"
27 
28 namespace itk
29 {
41 template< class TBorder >
43 {
44 public:
53  {
54  if ( m_Pointer->GetLambda() == rhs.m_Pointer->GetLambda() )
55  {
56  if ( m_Pointer->GetLambda() < 0 )
57  {
58  return ( m_Pointer > rhs.m_Pointer );
59  }
60  else
61  {
62  // The purpose of this comparison is to not let any one region
63  // get more borders than another region. In the degenerate
64  // case of an image where the Lambdas are always equal to some
65  // constant C, allowing a single region to be repeatedly
66  // merged so that it gains many borders will result in
67  // pathologically slow behavior.
68  double v1 = vnl_math_max(
69  static_cast< double >( m_Pointer->GetRegion1()->GetRegionBorderSize() ),
70  static_cast< double >( m_Pointer->GetRegion2()->GetRegionBorderSize() ) );
72 
73  double v2 = vnl_math_max(
74  static_cast< double >( rhs.m_Pointer->GetRegion1()->GetRegionBorderSize() ),
75  static_cast< double >( rhs.m_Pointer->GetRegion2()->GetRegionBorderSize() ) );
76 
77  return ( v1 > v2 );
78  }
79  }
80  return ( m_Pointer->GetLambda() > rhs.m_Pointer->GetLambda() );
81  }
82 
84  {
85  if ( m_Pointer->GetLambda() == rhs->m_Pointer->GetLambda() )
86  {
87  if ( m_Pointer->GetLambda() < 0 )
88  {
89  return ( m_Pointer > rhs->m_Pointer );
90  }
91  else
92  {
93  // The purpose of this comparison is to not let any one region
94  // get more borders than another region. In the degenerate
95  // case of an image where the Lambdas are always equal to some
96  // constant C, allowing a single region to be repeatedly
97  // merged so that it gains many borders will result in
98  // pathologically slow behavior.
99  double v1 = vnl_math_max(
100  static_cast< double >( m_Pointer->GetRegion1()->GetRegionBorderSize() ),
101  static_cast< double >( m_Pointer->GetRegion2()->GetRegionBorderSize() ) );
102 
103  double v2 = vnl_math_max(
104  static_cast< double >( rhs->m_Pointer->GetRegion1()->GetRegionBorderSize() ),
105  static_cast< double >( rhs->m_Pointer->GetRegion2()->GetRegionBorderSize() ) );
106 
107  return ( v1 > v2 );
108  }
109  }
110  return ( m_Pointer->GetLambda() > rhs->m_Pointer->GetLambda() );
111  }
112 
113  TBorder *m_Pointer;
114 };
115 
136 
138 {
139 public:
145 
147  itkNewMacro(Self);
148 
151 
153  void SetRegion1(KLMSegmentationRegion *Region1);
154 
156  KLMSegmentationRegion * GetRegion1();
157 
159  void SetRegion2(KLMSegmentationRegion *Region2);
160 
162  KLMSegmentationRegion * GetRegion2();
163 
166  itkSetMacro(Lambda, double);
167  itkGetConstReferenceMacro(Lambda, double);
169 
171  void EvaluateLambda();
172 
174  void PrintBorderInfo();
175 
176 protected:
179 
182 
184  void PrintSelf(std::ostream & os, Indent indent) const;
185 
186 private:
187  KLMSegmentationBorder(const Self &); //purposely not implemented
188  void operator=(const Self &); //purposely not implemented
189 
190  double m_Lambda;
193 };
194 } // end namespace itk
195 
196 #endif
197