ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkRGBToLuminanceImageAdaptor.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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10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
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14  * See the License for the specific language governing permissions and
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17  *=========================================================================*/
18 #ifndef __itkRGBToLuminanceImageAdaptor_h
19 #define __itkRGBToLuminanceImageAdaptor_h
20 
21 #include "itkImageAdaptor.h"
22 #include "vnl/vnl_math.h"
23 
24 namespace itk
25 {
26 namespace Accessor
27 {
40 template< class TInternalType, class TExternalType >
42 {
43 public:
46  typedef TExternalType ExternalType;
47 
50  typedef TInternalType InternalType;
51 
52  static inline void Set(TInternalType & output, const TExternalType & input)
53  { output = static_cast< TInternalType >( input.GetLuminance() ); }
54 
55  static inline TExternalType Get(const TInternalType & input)
56  { return static_cast< TExternalType >( input.GetLuminance() ); }
57 };
58 } // end namespace Accessor
59 
70 template< class TImage, class TOutputPixelType >
71 class ITK_EXPORT RGBToLuminanceImageAdaptor:public
72  ImageAdaptor< TImage,
73  Accessor::RGBToLuminancePixelAccessor<
74  typename TImage::PixelType,
75  TOutputPixelType > >
76 {
77 public:
81  typename TImage::PixelType,
82  TOutputPixelType > > Superclass;
85 
87  itkNewMacro(Self);
88 
91 protected:
94 private:
95  RGBToLuminanceImageAdaptor(const Self &); //purposely not implemented
96  void operator=(const Self &); //purposely not implemented
97 };
98 } // end namespace itk
100 
101 #endif
102