ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkRGBToLuminanceImageFilter.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 __itkRGBToLuminanceImageFilter_h
19 #define __itkRGBToLuminanceImageFilter_h
20 
22 
23 namespace itk
24 {
36 namespace Functor
37 {
38 template< class TInput, class TOutput >
40 {
41 public:
42  typedef typename TInput::ComponentType ComponentType;
44 
47  bool operator!=(const RGBToLuminance &) const
48  {
49  return false;
50  }
51 
52  bool operator==(const RGBToLuminance & other) const
53  {
54  return !( *this != other );
55  }
56 
57  inline TOutput operator()(const TInput & A) const
58  { return static_cast< TOutput >( A.GetLuminance() ); }
59 };
60 }
61 
62 template< class TInputImage, class TOutputImage >
63 class ITK_EXPORT RGBToLuminanceImageFilter:
64  public
65  UnaryFunctorImageFilter< TInputImage, TOutputImage,
66  Functor::RGBToLuminance<
67  typename TInputImage::PixelType,
68  typename TOutputImage::PixelType > >
69 {
70 public:
74  TInputImage, TOutputImage,
75  Functor::RGBToLuminance< typename TInputImage::PixelType,
76  typename TOutputImage::PixelType > > Superclass;
77 
80 
82  itkNewMacro(Self);
83 
85  itkTypeMacro(RGBToLuminanceImageFilter,
87 
88 #ifdef ITK_USE_CONCEPT_CHECKING
89 
90  itkConceptMacro( InputHasNumericTraitsCheck,
92 
94 #endif
95 
96 protected:
99 
100 private:
101  RGBToLuminanceImageFilter(const Self &); //purposely not implemented
102  void operator=(const Self &); //purposely not implemented
103 };
104 } // end namespace itk
105 
106 #endif
107