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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkDistanceToCentroidMembershipFunction.txx,v $
Language: C++
Date: $Date: 2009-03-04 15:23:46 $
Version: $Revision: 1.12 $
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 __itkDistanceToCentroidMembershipFunction_txx
#define __itkDistanceToCentroidMembershipFunction_txx
#include "itkDistanceToCentroidMembershipFunction.h"
namespace itk {
namespace Statistics {
template < class TVector >
DistanceToCentroidMembershipFunction< TVector >
::DistanceToCentroidMembershipFunction():
m_NumberOfSamples(-1)
{
this->m_MeasurementVectorSize = 0;
m_Centroid.fill( 0.0f );
}
template < class TVector >
void
DistanceToCentroidMembershipFunction< TVector >
::SetCentroid(const vnl_vector< double > & centroid)
{
if( this->m_MeasurementVectorSize != 0 )
{
if( centroid.size() != this->m_MeasurementVectorSize )
{
itkExceptionMacro( << "Size of the centroid must be same as the length of"
<< " each measurement vector.");
}
}
this->m_MeasurementVectorSize = centroid.size();
m_Centroid = centroid;
this->Modified();
}
template< class TVector >
void
DistanceToCentroidMembershipFunction< TVector >
::SetMeasurementVectorSize( const MeasurementVectorSizeType s )
{
if( s == this->m_MeasurementVectorSize )
{
return;
}
if( this->m_MeasurementVectorSize != 0 )
{
itkWarningMacro( << "Destructively resizing paramters of the DistanceToCentroidMembershipFunction." );
}
this->m_MeasurementVectorSize = s;
m_Centroid.set_size( s );
this->Modified();
}
template < class TVector >
const vnl_vector< double > &
DistanceToCentroidMembershipFunction< TVector >
::GetCentroid() const
{
return m_Centroid;
}
template < class TVector >
double
DistanceToCentroidMembershipFunction< TVector >
::Evaluate(const MeasurementVectorType &measurement) const
{
// Assuming that measurement has the same length asthe centroid.
double temp =0;
double tempDistance;
// Compute |y - mean |
for ( unsigned int i = 0; i < this->m_MeasurementVectorSize; i++ )
{
tempDistance = measurement[i] - m_Centroid[i];
temp += tempDistance * tempDistance;
}
temp = vcl_sqrt( temp );
return temp;
}
template < class TVector >
void
DistanceToCentroidMembershipFunction< TVector >
::PrintSelf(std::ostream& os, Indent indent) const
{
unsigned int i;
Superclass::PrintSelf(os,indent);
if ( this->m_MeasurementVectorSize &&
m_Centroid.size() == this->m_MeasurementVectorSize )
{
os << indent << "Centroid: [";
for (i=0; i+1 < m_Centroid.size(); i++)
{
os << m_Centroid[i] << ", ";
}
os << m_Centroid[i] << "]" << std::endl;
}
else
{
os << indent << "Centorid: not set or size doen't match." << std::endl;
}
os << indent << "Number of Samples: " << m_NumberOfSamples << std::endl;
}
} // end namespace Statistics
} // end of namespace itk
#endif
|
