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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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
*
* http://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 itkExpNegativeImageFilter_h
#define itkExpNegativeImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkMath.h"
#include "itkMath.h"
namespace itk
{
namespace Functor
{
/**
* \class ExpNegative
* \brief
* \ingroup ITKImageIntensity
*/
template< typename TInput, typename TOutput >
class ExpNegative
{
public:
ExpNegative() { m_Factor = 1.0; }
~ExpNegative() {}
bool operator!=(const ExpNegative & other) const
{
if ( Math::NotExactlyEquals(m_Factor, other.m_Factor) )
{
return true;
}
return false;
}
bool operator==(const ExpNegative & other) const
{
return !( *this != other );
}
inline TOutput operator()(const TInput & A) const
{
return static_cast< TOutput >( std::exp( -m_Factor * static_cast< double >( A ) ) );
}
/** Sets the value 'K' used in the function evaluation exp(-K.x). */
void SetFactor(double factor)
{
m_Factor = factor;
}
double GetFactor() const
{
return m_Factor;
}
private:
double m_Factor;
};
}
/** \class ExpNegativeImageFilter
* \brief Computes the function exp(-K.x) for each input pixel.
*
* Every output pixel is equal to std::exp(-K.x ). where x is the
* intensity of the homologous input pixel, and K is a user-provided
* constant.
*
* \ingroup IntensityImageFilters
* \ingroup MultiThreaded
*
* \ingroup ITKImageIntensity
*/
template< typename TInputImage, typename TOutputImage >
class ExpNegativeImageFilter:
public
UnaryFunctorImageFilter< TInputImage, TOutputImage,
Functor::ExpNegative<
typename TInputImage::PixelType,
typename TOutputImage::PixelType > >
{
public:
/** Standard class typedefs. */
typedef ExpNegativeImageFilter Self;
typedef UnaryFunctorImageFilter<
TInputImage, TOutputImage,
Functor::ExpNegative< 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(ExpNegativeImageFilter,
UnaryFunctorImageFilter);
void SetFactor(double factor)
{
if ( factor == this->GetFunctor().GetFactor() )
{
return;
}
this->GetFunctor().SetFactor(factor);
this->Modified();
}
double GetFactor() const
{
return this->GetFunctor().GetFactor();
}
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( InputConvertibleToDoubleCheck,
( Concept::Convertible< typename TInputImage::PixelType, double > ) );
itkConceptMacro( DoubleConvertibleToOutputCheck,
( Concept::Convertible< double, typename TOutputImage::PixelType > ) );
// End concept checking
#endif
protected:
ExpNegativeImageFilter() {}
virtual ~ExpNegativeImageFilter() ITK_OVERRIDE {}
private:
ITK_DISALLOW_COPY_AND_ASSIGN(ExpNegativeImageFilter);
};
} // end namespace itk
#endif
|
