ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkBoundedReciprocalImageFilter.h
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1 /*=========================================================================
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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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18 /*=========================================================================
19  *
20  * Portions of this file are subject to the VTK Toolkit Version 3 copyright.
21  *
22  * Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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28 #ifndef __itkBoundedReciprocalImageFilter_h
29 #define __itkBoundedReciprocalImageFilter_h
30 
32 
33 namespace itk
34 {
44 namespace Functor
45 {
46 template< class TInput, class TOutput >
48 {
49 public:
52  bool operator!=(const BoundedReciprocal &) const
53  {
54  return false;
55  }
56 
57  bool operator==(const BoundedReciprocal & other) const
58  {
59  return !( *this != other );
60  }
61 
62  inline TOutput operator()(const TInput & A) const
63  {
64  return static_cast< TOutput >( 1.0 / ( 1.0 + static_cast< double >( A ) ) );
65  }
66 };
67 }
68 
69 template< class TInputImage, class TOutputImage >
71  public
72  UnaryFunctorImageFilter< TInputImage, TOutputImage,
73  Functor::BoundedReciprocal<
74  typename TInputImage::PixelType,
75  typename TOutputImage::PixelType > >
76 {
77 public:
80  typedef UnaryFunctorImageFilter< TInputImage, TOutputImage,
82  typename TInputImage::PixelType,
83  typename TOutputImage::PixelType >
85 
88 
90  itkNewMacro(Self);
91 
93  itkTypeMacro(BoundedReciprocalImageFilter,
95 
96 #ifdef ITK_USE_CONCEPT_CHECKING
97 
98  itkConceptMacro( InputConvertibleToDoubleCheck,
100  itkConceptMacro( DoubleConvertibleToOutputCheck,
102 
104 #endif
105 protected:
108 private:
109  BoundedReciprocalImageFilter(const Self &); //purposely not implemented
110  void operator=(const Self &); //purposely not implemented
111 };
112 } // end namespace itk
114 
115 #endif
116