ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkExpNegativeImageFilter.h
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3  * Copyright Insight Software Consortium
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5  * Licensed under the Apache License, Version 2.0 (the "License");
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14  * See the License for the specific language governing permissions and
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18 #ifndef __itkExpNegativeImageFilter_h
19 #define __itkExpNegativeImageFilter_h
20 
22 #include "vnl/vnl_math.h"
23 
24 namespace itk
25 {
26 namespace Functor
27 {
33 template< class TInput, class TOutput >
35 {
36 public:
37  ExpNegative() { m_Factor = 1.0; }
40 
41  bool operator!=(const ExpNegative & other) const
42  {
43  if ( m_Factor != other.m_Factor )
44  {
45  return true;
46  }
47  return false;
48  }
49 
50  bool operator==(const ExpNegative & other) const
51  {
52  return !( *this != other );
53  }
54 
55  inline TOutput operator()(const TInput & A) const
56  {
57  return static_cast< TOutput >( vcl_exp( -m_Factor * static_cast< double >( A ) ) );
58  }
59 
61  void SetFactor(double factor)
62  {
63  m_Factor = factor;
64  }
65 
66  double GetFactor() const
67  {
68  return m_Factor;
69  }
70 
71 private:
72  double m_Factor;
73 };
74 }
87 template< class TInputImage, class TOutputImage >
88 class ITK_EXPORT ExpNegativeImageFilter:
89  public
90  UnaryFunctorImageFilter< TInputImage, TOutputImage,
91  Functor::ExpNegative<
92  typename TInputImage::PixelType,
93  typename TOutputImage::PixelType > >
94 {
95 public:
99  TInputImage, TOutputImage,
100  Functor::ExpNegative< typename TInputImage::PixelType,
101  typename TOutputImage::PixelType > > Superclass;
102 
105 
107  itkNewMacro(Self);
108 
110  itkTypeMacro(ExpNegativeImageFilter,
112 
113  void SetFactor(double factor)
114  {
115  if ( factor == this->GetFunctor().GetFactor() )
116  {
117  return;
118  }
119  this->GetFunctor().SetFactor(factor);
120  this->Modified();
121  }
122 
123 #ifdef ITK_USE_CONCEPT_CHECKING
124 
125  itkConceptMacro( InputConvertibleToDoubleCheck,
127  itkConceptMacro( DoubleConvertibleToOutputCheck,
129 
131 #endif
132 protected:
135 private:
136  ExpNegativeImageFilter(const Self &); //purposely not implemented
137  void operator=(const Self &); //purposely not implemented
138 };
139 } // end namespace itk
141 
142 #endif
143