ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkSquaredDifferenceImageFilter.h
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5  * Licensed under the Apache License, Version 2.0 (the "License");
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18 #ifndef __itkSquaredDifferenceImageFilter_h
19 #define __itkSquaredDifferenceImageFilter_h
20 
22 
23 namespace itk
24 {
53 namespace Functor
54 {
55 template< class TInput1, class TInput2, class TOutput >
57 {
58 public:
61  bool operator!=(const SquaredDifference2 &) const
62  {
63  return false;
64  }
65 
66  bool operator==(const SquaredDifference2 & other) const
67  {
68  return !( *this != other );
69  }
70 
71  inline TOutput operator()(const TInput1 & A,
72  const TInput2 & B) const
73  {
74  const double dA = static_cast< double >( A );
75  const double dB = static_cast< double >( B );
76  const double diff = dA - dB;
77 
78  return static_cast< TOutput >( diff * diff );
79  }
80 };
81 }
82 
83 template< class TInputImage1, class TInputImage2, class TOutputImage >
85  public
86  BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
87  Functor::SquaredDifference2<
88  typename TInputImage1::PixelType,
89  typename TInputImage2::PixelType,
90  typename TOutputImage::PixelType > >
91 {
92 public:
96  TInputImage1, TInputImage2, TOutputImage,
98  typename TInputImage1::PixelType,
99  typename TInputImage2::PixelType,
100  typename TOutputImage::PixelType >
102 
105 
107  itkNewMacro(Self);
108 
110  itkTypeMacro(SquaredDifferenceImageFilter,
112 
113 #ifdef ITK_USE_CONCEPT_CHECKING
114 
115  itkConceptMacro( Input1ConvertibleToDoubleCheck,
117  itkConceptMacro( Input2ConvertibleToDoubleCheck,
119  itkConceptMacro( DoubleConvertibleToOutputCheck,
121 
123 #endif
124 
125 protected:
128 
129 private:
130  SquaredDifferenceImageFilter(const Self &); //purposely not implemented
131  void operator=(const Self &); //purposely not implemented
132 };
133 } // end namespace itk
134 
135 #endif
136