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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkChangeRegionLabelMapFilter.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.
Portions of this code are covered under the VTK copyright.
See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 __itkChangeRegionLabelMapFilter_txx
#define __itkChangeRegionLabelMapFilter_txx
#include "itkChangeRegionLabelMapFilter.h"
namespace itk
{
template <class TInputImage>
void
ChangeRegionLabelMapFilter<TInputImage>
::GenerateInputRequestedRegion()
{
// call the superclass' implementation of this method
Superclass::GenerateInputRequestedRegion();
// We need all the input.
InputImagePointer input = const_cast<InputImageType *>(this->GetInput());
if ( !input )
{ return; }
input->SetRequestedRegion( input->GetLargestPossibleRegion() );
}
template <class TInputImage>
void
ChangeRegionLabelMapFilter<TInputImage>
::GenerateOutputInformation()
{
Superclass::GenerateOutputInformation();
this->GetOutput()->SetLargestPossibleRegion( m_Region );
}
template <class TInputImage>
void
ChangeRegionLabelMapFilter<TInputImage>
::EnlargeOutputRequestedRegion(DataObject *)
{
this->GetOutput()
->SetRequestedRegion( this->GetOutput()->GetLargestPossibleRegion() );
}
template <class TInputImage>
void
ChangeRegionLabelMapFilter<TInputImage>
::GenerateData()
{
if( m_Region.IsInside( this->GetInput()->GetLargestPossibleRegion() ) )
{
// only copy the image, report progress anyway
ProgressReporter progress( this, 0, 1 );
this->AllocateOutputs();
}
else
{
// call the superclass implementation so it will take care to create the threads
Superclass::GenerateData();
}
}
template<class TInputImage>
void
ChangeRegionLabelMapFilter<TInputImage>
::ThreadedProcessLabelObject( LabelObjectType * labelObject )
{
typename InputImageType::LabelObjectType::LineContainerType::const_iterator lit;
typename InputImageType::LabelObjectType::LineContainerType lineContainer = labelObject->GetLineContainer();
labelObject->GetLineContainer().clear();
IndexType idxMin = m_Region.GetIndex();
IndexType idxMax;
for( int i=0; i<ImageDimension; i++ )
{
idxMax[i] = idxMin[i] + m_Region.GetSize()[i] - 1;
}
for( lit = lineContainer.begin(); lit != lineContainer.end(); lit++ )
{
IndexType idx = lit->GetIndex();
unsigned long length = lit->GetLength();
bool outside = false;
for( int i=1; i<ImageDimension; i++ )
{
if( idx[i] < idxMin[i] || idx[i] > idxMax[i] )
{
outside = true;
}
}
// check the axis 0
if( !outside )
{
long lastIdx0 = idx[0] + length - 1;
if( !( ( idx[0] < idxMin[0] && lastIdx0 < idxMin[0] )
|| ( idx[0] > idxMax[0] && lastIdx0 > idxMax[0] ) ) )
{
IndexType newIdx = idx;
long newLength = length;
if( idx[0] < idxMin[0] )
{
newLength -= idxMin[0] - idx[0];
newIdx[0] = idxMin[0];
}
if( lastIdx0 > idxMax[0] )
{
newLength -= lastIdx0 - idxMax[0];
}
labelObject->AddLine( newIdx, newLength );
}
}
}
// remove the object if it is empty
if( labelObject->GetLineContainer().empty() )
{
this->m_LabelObjectContainerLock->Lock();
this->GetOutput()->RemoveLabelObject( labelObject );
this->m_LabelObjectContainerLock->Unlock();
}
}
template<class TInputImage>
void
ChangeRegionLabelMapFilter<TInputImage>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Region: " << m_Region << std::endl;
}
} // end namespace itk
#endif
|
