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
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkNeighborhoodIteratorTestCommon.hxx"
#include "itkShapedNeighborhoodIterator.h"
#include "itkFlatStructuringElement.h"
int
itkShapedNeighborhoodIteratorTest(int, char *[])
{
TestImageType::Pointer img = GetTestImage(10, 10, 5, 3);
itk::ShapedNeighborhoodIterator<TestImageType>::IndexType loc;
loc[0] = 4;
loc[1] = 4;
loc[2] = 2;
loc[3] = 1;
// radius of the iterator
itk::ShapedNeighborhoodIterator<TestImageType>::RadiusType radius;
radius[0] = radius[1] = radius[2] = radius[3] = 1;
// region over which the iterator is defined
itk::ShapedNeighborhoodIterator<TestImageType>::RegionType reg;
itk::ShapedNeighborhoodIterator<TestImageType>::SizeType sz;
itk::ShapedNeighborhoodIterator<TestImageType>::IndexType idx;
idx[0] = idx[1] = idx[2] = 0;
idx[3] = 1;
sz[0] = sz[1] = 10;
sz[2] = 5;
sz[3] = 1;
reg.SetIndex(idx);
reg.SetSize(sz);
// initialize an iterator
println("Creating ShapedNeighborhoodIterator");
itk::ShapedNeighborhoodIterator<TestImageType> it(radius, img, reg);
it.Print(std::cout);
println("Moving iterator using SetLocation()");
it.SetLocation(loc);
it.Print(std::cout);
println("Initializing ShapedNeighborhoodIterator");
println("Activating some offsets");
println("...turn on [0,0,0,0], the center pixel");
itk::ShapedNeighborhoodIterator<TestImageType>::OffsetType off;
off[0] = 0;
off[1] = 0;
off[2] = 0;
off[3] = 0;
it.ActivateOffset(off);
it.Print(std::cout);
println("...turn on [1,0,0,0]");
off[0] = 1;
off[1] = 0;
off[2] = 0;
off[3] = 0;
it.ActivateOffset(off);
it.Print(std::cout);
println("...turn on [1,0,0,0] again");
off[0] = 1;
off[1] = 0;
off[2] = 0;
off[3] = 0;
it.ActivateOffset(off);
it.Print(std::cout);
println("...turn on [-1,0,0,0]");
off[0] = -1;
off[1] = 0;
off[2] = 0;
off[3] = 0;
it.ActivateOffset(off);
it.Print(std::cout);
println("...turn on [0,-1,0,0]");
off[0] = 0;
off[1] = -1;
off[2] = 0;
off[3] = 0;
it.ActivateOffset(off);
it.Print(std::cout);
println("...turn on [0,1,0,0]");
off[0] = 0;
off[1] = 1;
off[2] = 0;
off[3] = 0;
it.ActivateOffset(off);
it.Print(std::cout);
println("Testing iteration through the neighborhood.");
itk::ShapedNeighborhoodIterator<TestImageType>::Iterator ci = it.Begin();
println("Testing using IsAtEnd()");
while (!ci.IsAtEnd())
{
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
ci++;
}
println("Testing using != it.End()");
for (ci = it.Begin(); ci != it.End(); ++ci)
{
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
}
println("Testing reverse iteration using != it.Begin()");
ci = it.End();
--ci;
while (ci != it.Begin())
{
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
ci--;
}
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
println("Testing read through GetPixel(itk::Offset(0,0,0,0))");
TestImageType::IndexType voff;
voff[0] = 1;
voff[1] = 1;
voff[2] = 1;
voff[3] = 1;
off[0] = 0;
off[1] = 0;
off[2] = 0;
off[3] = 0;
std::cout << it.GetPixel(off) << std::endl;
println("Testing read through GetPixel(unsigned int)");
std::cout << it.GetPixel(it.GetNeighborhoodIndex(off)) << std::endl;
println("Testing write through iterator dereference");
for (ci = it.Begin(); ci != it.End(); ++ci)
{
ci.Set(voff);
}
for (ci = it.Begin(); ci != it.End(); ++ci)
{
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
}
println("Testing write through SetPixel(itk::Offset(0,0,0,0))");
voff[0] = 45000;
it.SetPixel(off, voff);
for (ci = it.Begin(); ci != it.End(); ++ci)
{
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
}
println("Testing iteration through the image");
off[0] = 0;
off[1] = 0;
off[2] = 0;
off[3] = 0;
for (it.GoToBegin(); !it.IsAtEnd(); ++it)
{
std::cout << it.GetPixel(off) << std::endl;
}
println("Testing reverse iteration through the image");
off[0] = 0;
off[1] = 0;
off[2] = 0;
off[3] = 0;
for (it.GoToEnd(), --it; !it.IsAtBegin(); --it)
{
std::cout << it.GetPixel(off) << std::endl;
}
std::cout << it.GetPixel(off) << std::endl;
println("Testing interoperability with FlatStructuringElement");
using StructuringElementType = itk::FlatStructuringElement<4>;
const StructuringElementType::RadiusType radius2 = StructuringElementType::RadiusType::Filled(2);
const StructuringElementType kernel = StructuringElementType::Cross(radius2);
itk::ShapedNeighborhoodIterator<TestImageType> iterator(radius2, img, img->GetBufferedRegion());
iterator.CreateActiveListFromNeighborhood(kernel);
iterator.SetLocation(loc);
for (ci = iterator.Begin(); ci != iterator.End(); ++ci)
{
std::cout << ci.GetNeighborhoodIndex() << " -> " << ci.GetNeighborhoodOffset() << " = " << ci.Get() << std::endl;
}
println("testing operator=");
itk::ShapedNeighborhoodIterator<TestImageType> oeIt;
oeIt = it;
it.Print(std::cout);
oeIt.Print(std::cout);
return EXIT_SUCCESS;
}
|
