ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkMinimumImageFilter.h
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1 /*=========================================================================
2  *
3  * Copyright Insight Software Consortium
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
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14  * See the License for the specific language governing permissions and
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16  *
17  *=========================================================================*/
18 #ifndef __itkMinimumImageFilter_h
19 #define __itkMinimumImageFilter_h
20 
22 
23 namespace itk
24 {
25 namespace Functor
26 {
32 template< class TInput1, class TInput2 = TInput1, class TOutput = TInput1 >
33 class Minimum
34 {
35 public:
36  Minimum() {}
37  ~Minimum() {}
38  bool operator!=(const Minimum &) const
39  {
40  return false;
41  }
43 
44  bool operator==(const Minimum & other) const
45  {
46  return !( *this != other );
47  }
48 
49  inline TOutput operator()(const TInput1 & A, const TInput2 & B) const
50  { return static_cast< TOutput >( ( A < B ) ? A : B ); }
51 };
52 }
71 template< class TInputImage1, class TInputImage2 = TInputImage1, class TOutputImage = TInputImage1 >
72 class ITK_EXPORT MinimumImageFilter:
73  public
74  BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
75  Functor::Minimum<
76  typename TInputImage1::PixelType,
77  typename TInputImage2::PixelType,
78  typename TOutputImage::PixelType > >
79 {
80 public:
84  TInputImage1, TInputImage2, TOutputImage,
86  typename TInputImage1::PixelType,
87  typename TInputImage2::PixelType,
88  typename TOutputImage::PixelType >
90 
93 
95  itkNewMacro(Self);
96 
98  itkTypeMacro(MinimumImageFilter,
100 
101 #ifdef ITK_USE_CONCEPT_CHECKING
102 
103  itkConceptMacro( Input1ConvertibleToInput2Check,
104  ( Concept::Convertible< typename TInputImage1::PixelType,
105  typename TInputImage2::PixelType > ) );
106  itkConceptMacro( Input2ConvertibleToOutputCheck,
107  ( Concept::Convertible< typename TInputImage2::PixelType,
108  typename TOutputImage::PixelType > ) );
109  itkConceptMacro( Input1LessThanInput2Check,
110  ( Concept::LessThanComparable< typename TInputImage1::PixelType,
111  typename TInputImage2::PixelType > ) );
112 
114 #endif
115 
116 protected:
118  virtual ~MinimumImageFilter() {}
119 
120 private:
121  MinimumImageFilter(const Self &); //purposely not implemented
122  void operator=(const Self &); //purposely not implemented
123 };
124 } // end namespace itk
125 
126 #endif
127