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
104
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkRGBToLuminanceImageAdaptor_h
#define itkRGBToLuminanceImageAdaptor_h
#include "itkImageAdaptor.h"
#include "itkMath.h"
namespace itk
{
namespace Accessor
{
/**
* \class RGBToLuminancePixelAccessor
* \brief Give access to Luminance of a color pixel type.
*
* RGBToLuminancePixelAccessor is templated over an internal type and an
* external type representation. This class cast the input applies the function
* to it and cast the result according to the types defined as template
* parameters. The input pixel type must support the GetLuminance() method.
* This is the case of the RGBPixel class for example.
*
* \ingroup ImageAdaptors
* \ingroup ITKImageAdaptors
*/
template <typename TInternalType, typename TExternalType>
class RGBToLuminancePixelAccessor
{
public:
/** External type alias. It defines the external aspect
* that this class will exhibit. */
using ExternalType = TExternalType;
/** Internal type alias. It defines the internal real
* representation of data. */
using InternalType = TInternalType;
static inline void
Set(TInternalType & output, const TExternalType & input)
{
output = static_cast<TInternalType>(input.GetLuminance());
}
static inline TExternalType
Get(const TInternalType & input)
{
return static_cast<TExternalType>(input.GetLuminance());
}
};
} // end namespace Accessor
/**
* \class RGBToLuminanceImageAdaptor
* \brief Presents a color image as being composed of the Luminance of its pixels.
*
* Additional casting is performed according to the input and output image
* types following C++ default casting rules. The input color pixel type must
* provide a GetLuminance() method.
*
* \ingroup ImageAdaptors
* \ingroup ITKImageAdaptors
*/
template <typename TImage, typename TOutputPixelType>
class RGBToLuminanceImageAdaptor
: public ImageAdaptor<TImage, Accessor::RGBToLuminancePixelAccessor<typename TImage::PixelType, TOutputPixelType>>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(RGBToLuminanceImageAdaptor);
/** Standard class type aliases. */
using Self = RGBToLuminanceImageAdaptor;
using Superclass =
ImageAdaptor<TImage, Accessor::RGBToLuminancePixelAccessor<typename TImage::PixelType, TOutputPixelType>>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(RGBToLuminanceImageAdaptor);
protected:
RGBToLuminanceImageAdaptor() = default;
~RGBToLuminanceImageAdaptor() override = default;
};
} // end namespace itk
#endif
|
