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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkHistogramToImageFilter.txx
Language: C++
Date: $Date$
Version: $Revision$
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 __itkHistogramToImageFilter_txx
#define __itkHistogramToImageFilter_txx
#include "itkHistogramToImageFilter.h"
#include <itkNumericTraits.h>
#include "itkProgressReporter.h"
namespace itk
{
/** Constructor */
template <class THistogram, unsigned int NDimension, class TFunction >
HistogramToImageFilter<THistogram, NDimension, TFunction>
::HistogramToImageFilter()
{
this->SetNumberOfRequiredInputs(1);
m_Size.Fill(0);
m_Spacing.Fill(1.0);
m_Origin.Fill(0.0);
}
/** Destructor */
template <class THistogram, unsigned int NDimension, class TFunction >
HistogramToImageFilter<THistogram, NDimension, TFunction>
::~HistogramToImageFilter()
{
}
/** Set the Input Histogram */
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::SetInput( const HistogramType *input)
{
// Histograms are not dataobjects, so need to decorate it to push it down
// the pipeline
typename InputHistogramObjectType::Pointer histogramObject =
InputHistogramObjectType::New();
histogramObject->Set( const_cast< HistogramType * >(input) );
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(0, histogramObject );
}
/** Set the Input Histogram if already decorated */
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::SetInput( const InputHistogramObjectType *inputObject)
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(0,
const_cast< InputHistogramObjectType * >( inputObject ) );
}
template <class THistogram, unsigned int NDimension, class TFunction >
const typename HistogramToImageFilter< THistogram, NDimension, TFunction >::InputHistogramObjectType *
HistogramToImageFilter<THistogram, NDimension, TFunction>
::GetInput(void)
{
if (this->GetNumberOfInputs() < 1)
{
return 0;
}
return static_cast<const InputHistogramObjectType * >
(this->ProcessObject::GetInput(0) );
}
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::SetSpacing(const double* spacing)
{
SpacingType s(spacing);
this->SetSpacing( s );
}
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::SetOrigin(const double* origin)
{
PointType p(origin);
SetOrigin(p);
}
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::SetTotalFrequency( unsigned long n )
{
if( n < 1 )
{
itkExceptionMacro("Total frequency in the histogram must be at least 1.");
}
if( n == this->GetFunctor().GetTotalFrequency() )
{
return;
}
else
{
this->GetFunctor().SetTotalFrequency( n );
this->Modified();
}
}
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::GenerateOutputInformation()
{
// Get the input and output pointers
// Get from decorator
const HistogramType *inputHistogram = this->GetInput()->Get();
OutputImageType *outputImage = this->GetOutput();
// Set the image size to the number of bins along each dimension.
for( unsigned int i=0; i< ImageDimension; i++)
{
m_Size[i] = inputHistogram->GetSize(i);
m_Origin[i] = inputHistogram->GetBinMin(i,0);
m_Spacing[i] = inputHistogram->GetBinMin(i,1) - m_Origin[i];
}
// Set output image params and Allocate image
typename OutputImageType::RegionType region;
region.SetSize( m_Size );
outputImage->SetRegions( region );
outputImage->SetSpacing( m_Spacing ); // set spacing
outputImage->SetOrigin( m_Origin ); // and origin
}
//----------------------------------------------------------------------------
/** Update */
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::GenerateData(void)
{
itkDebugMacro(<< "HistogramToImageFilter::Update() called");
this->AllocateOutputs();
// Get the input and output pointers
// Get from decorator
const HistogramType *inputHistogram = this->GetInput()->Get();
OutputImageType *outputImage = this->GetOutput();
// Set the TotalFrequency in the functor
this->SetTotalFrequency( static_cast< unsigned long >(
inputHistogram->GetTotalFrequency() ));
ProgressReporter progress( this, 0,
outputImage->GetRequestedRegion().GetNumberOfPixels() );
typedef typename HistogramType::ConstIterator HistogramIterator;
typedef typename HistogramType::AbsoluteFrequencyType AbsoluteFrequencyType;
HistogramIterator hitr = inputHistogram->Begin();
// Fill image with frequencies from Histogram
ImageIteratorType iter( outputImage, outputImage->GetRequestedRegion() );
while( !iter.IsAtEnd() )
{
const AbsoluteFrequencyType & value = hitr.GetFrequency();
iter.Set( m_Functor( static_cast< unsigned long >( value ) ) );
++iter;
++hitr;
progress.CompletedPixel();
}
} // end update function
template <class THistogram, unsigned int NDimension, class TFunction >
void
HistogramToImageFilter<THistogram, NDimension, TFunction>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Size : " << m_Size << std::endl;
os << indent << "Origin: " << m_Origin << std::endl;
os << indent << "Spacing: " << m_Spacing << std::endl;
os << indent << "Sum of frequencies of measurement vectors of the histogram: " <<
m_Functor.GetTotalFrequency() << std::endl;
}
} // end namespace itk
#endif
|
