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
146
147
148
149
150
151
152
153
154
155
156
157
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkStandardDeviationProjectionImageFilter.h,v $
Language: C++
Date: $Date: 2008-02-08 04:52:21 $
Version: $Revision: 1.1 $
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 __itkStandardDeviationProjectionImageFilter_h
#define __itkStandardDeviationProjectionImageFilter_h
#include "itkProjectionImageFilter.h"
#include "itkNumericTraits.h"
#include "itkConceptChecking.h"
namespace itk {
/** \class StandardDeviationProjectionImageFilter
* \brief Mean projection
*
* This class was contributed to the Insight Journal by Gaetan Lehmann.
* The original paper can be found at
* http://insight-journal.org/midas/handle.php?handle=1926/164
*
* \author Gaetan Lehmann. Biologie du Dveloppement et de la Reproduction,
* INRA de Jouy-en-Josas, France.
*
*
* \sa ProjectionImageFilter
* \sa MedianProjectionImageFilter
* \sa MeanProjectionImageFilter
* \sa SumProjectionImageFilter
* \sa MeanProjectionImageFilter
* \sa MaximumProjectionImageFilter
* \sa MinimumProjectionImageFilter
* \sa BinaryProjectionImageFilter
*/
namespace Function {
template <class TInputPixel, class TAccumulate>
class StandardDeviationAccumulator
{
public:
typedef typename NumericTraits<TInputPixel>::RealType RealType;
StandardDeviationAccumulator( unsigned long size )
{
m_Size = size;
m_Values.reserve( size );
}
~StandardDeviationAccumulator(){}
inline void Initialize()
{
m_Sum = NumericTraits< TAccumulate >::Zero;
m_Values.clear();
}
inline void operator()( const TInputPixel &input )
{
m_Sum = m_Sum + input;
m_Values.push_back( input );
}
inline RealType GetValue()
{
// to avoid division by zero
if( m_Size <= 1 )
return NumericTraits<RealType>::Zero;
typename NumericTraits<TInputPixel>::RealType mean =
((RealType) m_Sum) / m_Size;
typename std::vector<TInputPixel>::iterator it;
RealType squaredSum = NumericTraits<RealType>::Zero;
for( it = m_Values.begin(); it != m_Values.end(); it++ )
{
squaredSum += vnl_math_sqr(*it - mean);
}
return vcl_sqrt( squaredSum / ( m_Size - 1) );
}
TAccumulate m_Sum;
unsigned long m_Size;
std::vector<TInputPixel> m_Values;
};
} // end namespace Function
template <class TInputImage,
class TOutputImage,
class TAccumulate= ITK_TYPENAME
NumericTraits< ITK_TYPENAME TOutputImage::PixelType >
::AccumulateType >
class ITK_EXPORT StandardDeviationProjectionImageFilter :
public
ProjectionImageFilter<TInputImage, TOutputImage,
Function::StandardDeviationAccumulator< ITK_TYPENAME
TInputImage::PixelType, TAccumulate > >
{
public:
typedef StandardDeviationProjectionImageFilter Self;
typedef ProjectionImageFilter<TInputImage, TOutputImage,
Function::StandardDeviationAccumulator< typename
TInputImage::PixelType, TAccumulate > > Superclass;
typedef TInputImage InputImageType;
typedef typename InputImageType::PixelType InputPixelType;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Runtime information support. */
itkTypeMacro(StandardDeviationProjectionImageFilter, ProjectionImageFilter);
/** Method for creation through the object factory. */
itkNewMacro(Self);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputPixelToOutputPixelTypeGreaterAdditiveOperatorCheck,
(Concept::AdditiveOperators<TAccumulate,
InputPixelType,
TAccumulate>));
itkConceptMacro(InputHasNumericTraitsCheck,
(Concept::HasNumericTraits<InputPixelType>));
itkConceptMacro(AccumulateHasNumericTraitsCheck,
(Concept::HasNumericTraits<TAccumulate>));
/** End concept checking */
#endif
protected:
StandardDeviationProjectionImageFilter() {}
virtual ~StandardDeviationProjectionImageFilter() {}
private:
//purposely not implemented
StandardDeviationProjectionImageFilter(const Self&);
void operator=(const Self&); //purposely not implemented
}; // end StandardDeviationProjectionImageFilter
} //end namespace itk
#endif
|
