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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkImageRegionIteratorTest.cxx
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.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <iostream>
#include "itkImage.h"
#include "itkVector.h"
#include "itkImageRegionIterator.h"
// This routine is used to make sure that we call the "const" version
// of GetPixel() (via the operator[])
template <class T, unsigned int VImageDimension>
void TestConstPixelAccess(const itk::Image<T, VImageDimension> &in,
itk::Image<T, VImageDimension> &out)
{
typename itk::Image<T, VImageDimension>::IndexType regionStartIndex3D = {{5, 10, 15}};
typename itk::Image<T, VImageDimension>::IndexType regionEndIndex3D = {{8, 15, 17}};
T vec;
vec[0] = 5;
vec[1] = 4;
vec[2] = 3;
vec[3] = 2;
vec[4] = 1;
out[regionStartIndex3D] = vec;
out[regionEndIndex3D] = in[regionStartIndex3D];
}
int itkImageRegionIteratorTest(int, char* [] )
{
std::cout << "Creating an image" << std::endl;
itk::Image<itk::Vector<unsigned short, 5>, 3>::Pointer
o3 = itk::Image<itk::Vector<unsigned short, 5>, 3>::New();
int status = 0;
float origin3D[3] = { 5, 2.1, 8.1};
float spacing3D[3] = { 1.5, 2.1, 1};
itk::Image<itk::Vector<unsigned short, 5>, 3>::SizeType imageSize3D = {{ 20, 40, 60 }};
itk::Image<itk::Vector<unsigned short, 5>, 3>::SizeType bufferSize3D = {{ 8, 20, 14 }};
itk::Image<itk::Vector<unsigned short, 5>, 3>::SizeType regionSize3D = {{ 4, 6, 6 }};
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType startIndex3D = {{5, 4, 1}};
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType bufferStartIndex3D = {{2, 3, 5}};
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType regionStartIndex3D = {{5, 10, 12}};
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType regionEndIndex3D = {{8, 15, 17}};
itk::Image<itk::Vector<unsigned short, 5>, 3>::RegionType region;
region.SetSize(imageSize3D);
region.SetIndex(startIndex3D);
o3->SetLargestPossibleRegion( region );
region.SetSize(bufferSize3D);
region.SetIndex(bufferStartIndex3D);
o3->SetBufferedRegion( region );
region.SetSize(regionSize3D);
region.SetIndex(regionStartIndex3D);
o3->SetRequestedRegion( region );
o3->SetOrigin(origin3D);
o3->SetSpacing(spacing3D);
o3->Allocate();
std::cout << "Setting/Getting a pixel" << std::endl;
itk::Vector<unsigned short, 5> vec;
vec[0] = 5;
vec[1] = 4;
vec[2] = 3;
vec[3] = 2;
vec[4] = 1;
(*o3)[regionStartIndex3D] = vec;
(*o3)[regionEndIndex3D] = (*o3)[regionStartIndex3D];
TestConstPixelAccess(*o3, *o3);
itk::ImageIterator<itk::Image<itk::Vector<unsigned short, 5>, 3> > standardIt(o3, region);
// Iterate over a region using a simple for loop
itk::ImageRegionIterator<itk::Image<itk::Vector<unsigned short, 5>, 3> > it(o3, region);
std::cout << "Simple iterator loop: ";
for ( ; !it.IsAtEnd(); ++it)
{
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType index = it.GetIndex();
std::cout << index << std::endl;
}
itk::ImageRegionConstIterator<itk::Image<itk::Vector<unsigned short, 5>, 3> > standardCIt(o3, region);
// Iterate over a region using a simple for loop and a const iterator
itk::ImageRegionConstIterator<itk::Image<itk::Vector<unsigned short, 5>, 3> > cit(o3, region);
std::cout << "Simple const iterator loop: ";
for ( ; !cit.IsAtEnd(); ++cit)
{
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType index = cit.GetIndex();
std::cout << index << std::endl;
}
// Iterator over the region backwards using a simple for loop
itk::ImageRegionIterator<itk::Image<itk::Vector<unsigned short, 5>, 3> > backIt(o3, region);
backIt = backIt.End(); // one pixel past the end of the region
do
{
--backIt;
itk::Image<itk::Vector<unsigned short, 5>, 3>::IndexType index = backIt.GetIndex();
std::cout << "Simple iterator backwards loop: ";
for (unsigned int i=0; i < index.GetIndexDimension(); i++)
{
std::cout << index[i] << " ";
}
std::cout << std::endl;
}
while (!backIt.IsAtBegin()); // stop when we reach the beginning
if (status == 0)
{
std::cout << "Passed" << std::endl;
}
else
{
std::cout << "Failed" << std::endl;
}
return status;
}
|
