1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkRGBToLuminanceImageFilter.h,v $
Language: C++
Date: $Date: 2007-09-27 11:36:41 $
Version: $Revision: 1.5 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkRGBToLuminanceImageFilter_h
#define __itkRGBToLuminanceImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
namespace itk
{
/** \class RGBToLuminanceImageFilter
* \brief Converts an RGB image into a grayscale image.
*
* This filters converts an RGB image into a Luminance on by computing
* pixel-wise a linear combination on the Red, Green and Blue channels. The
* pixel type of the input image must have a GetLuminance() method. This is the
* case of the itk::RGBPixel class.
*
* \ingroup IntensityImageFilters Multithreaded
*/
namespace Function {
template< class TInput, class TOutput>
class RGBToLuminance
{
public:
typedef typename TInput::ComponentType ComponentType;
typedef typename itk::NumericTraits< ComponentType >::RealType RealType;
RGBToLuminance() {}
~RGBToLuminance() {}
bool operator!=( const RGBToLuminance & ) const
{
return false;
}
bool operator==( const RGBToLuminance & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput & A )
{ return static_cast<TOutput>( A.GetLuminance() ); }
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT RGBToLuminanceImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::RGBToLuminance<
typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef RGBToLuminanceImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::RGBToLuminance< typename TInputImage::PixelType,
typename TOutputImage::PixelType> > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(RGBToLuminanceImageFilter,
UnaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputHasNumericTraitsCheck,
(Concept::HasNumericTraits<typename TInputImage::PixelType::ComponentType>));
/** End concept checking */
#endif
protected:
RGBToLuminanceImageFilter() {}
virtual ~RGBToLuminanceImageFilter() {}
private:
RGBToLuminanceImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
|
