ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkRGBToLuminanceImageFilter.h
Go to the documentation of this file.
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
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0.txt
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,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  *=========================================================================*/
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 protected:
98 private:
99  RGBToLuminanceImageFilter(const Self &); //purposely not implemented
100  void operator=(const Self &); //purposely not implemented
101 };
102 } // end namespace itk
104 
105 #endif
106