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
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
|
/*=========================================================================
*
* 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 "itkRandomImageSource.h"
#include "itkThresholdImageFilter.h"
#include "itkTestingMacros.h"
#include "itkTextOutput.h"
#include <sstream>
int
itkThresholdImageFilterTest(int, char *[])
{
// Comment the following if you want to use the itk text output window
itk::OutputWindow::SetInstance(itk::TextOutput::New());
// Uncomment the following if you want to see each message independently
// itk::OutputWindow::GetInstance()->PromptUserOn();
using FloatImage2DType = itk::Image<float, 2>;
itk::RandomImageSource<FloatImage2DType>::Pointer random;
random = itk::RandomImageSource<FloatImage2DType>::New();
random->SetMin(0.0);
random->SetMax(1000.0);
random->ReleaseDataFlagOn();
FloatImage2DType::SpacingValueType spacing[2] = { 0.7, 2.1 };
random->SetSpacing(spacing);
FloatImage2DType::PointValueType origin[2] = { 15, 400 };
random->SetOrigin(origin);
std::ostringstream * os;
// Test #1, filter goes out of scope
itk::OutputWindowDisplayText("Test #1: Filter goes out of scope -----------------");
{
itk::ThresholdImageFilter<FloatImage2DType>::Pointer threshold;
threshold = itk::ThresholdImageFilter<FloatImage2DType>::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(threshold, ThresholdImageFilter, InPlaceImageFilter);
threshold->SetInput(random->GetOutput());
// Exercise threshold setting functions
threshold->ThresholdAbove(10.0);
threshold->ThresholdBelow(900.0);
threshold->ThresholdOutside(5.0, 40.0);
// Call update multiple times to make sure that the RandomImageSource
// is releasing and regenerating its data
threshold->Update();
threshold->Modified();
threshold->Update();
std::cout << "Input spacing: " << random->GetOutput()->GetSpacing()[0] << ", "
<< random->GetOutput()->GetSpacing()[1] << std::endl;
std::cout << "Output spacing: " << threshold->GetOutput()->GetSpacing()[0] << ", "
<< threshold->GetOutput()->GetSpacing()[1] << std::endl;
os = new std::ostringstream();
*os << "Filter: " << threshold.GetPointer();
itk::OutputWindowDisplayText(os->str().c_str());
delete os;
os = new std::ostringstream();
*os << "Output #0: " << threshold->GetOutput(0);
itk::OutputWindowDisplayText(os->str().c_str());
delete os;
itk::OutputWindowDisplayText("Ending Test #1: filter goes out of scope");
itk::OutputWindowDisplayText("End of Test #1 -----------------------------------");
}
// Test #2, user keeps an extra handle to an output
itk::OutputWindowDisplayText("Test #2: User keeps an extra hold on an output -----------------");
{
FloatImage2DType::Pointer keep;
itk::ThresholdImageFilter<FloatImage2DType>::Pointer threshold;
threshold = itk::ThresholdImageFilter<FloatImage2DType>::New();
threshold->SetInput(random->GetOutput());
threshold->Update();
os = new std::ostringstream();
*os << "Filter: " << threshold.GetPointer();
itk::OutputWindowDisplayText(os->str().c_str());
delete os;
os = new std::ostringstream();
*os << "Output #0: " << threshold->GetOutput(0);
itk::OutputWindowDisplayText(os->str().c_str());
delete os;
keep = threshold->GetOutput(0);
itk::OutputWindowDisplayText("End of Test #2: last handle on output 0 should go out of scope");
}
itk::OutputWindowDisplayText("End of Test #2 -----------------------------------");
// Test #3, user disconnects a data object from the pipeline
itk::OutputWindowDisplayText("Test #3: user disconnects a data object from the pipeline -----------------");
{
FloatImage2DType::Pointer keep;
itk::ThresholdImageFilter<FloatImage2DType>::Pointer threshold;
threshold = itk::ThresholdImageFilter<FloatImage2DType>::New();
threshold->SetInput(random->GetOutput());
threshold->Update();
os = new std::ostringstream;
*os << "Filter: " << threshold.GetPointer();
itk::OutputWindowDisplayText(os->str().c_str());
delete os;
os = new std::ostringstream();
*os << "Output #0: " << threshold->GetOutput(0);
itk::OutputWindowDisplayText(os->str().c_str());
delete os;
keep = threshold->GetOutput(0);
keep->DisconnectPipeline();
itk::OutputWindowDisplayText("End of Test #3: last handle on output 0 should go out of scope");
}
itk::OutputWindowDisplayText("End of Test #3 -----------------------------------");
// Test #4, threshold values
itk::OutputWindowDisplayText("Test #4: threshold values -----------------");
{
using PixelType = int;
using IntImage1DType = itk::Image<PixelType, 1>;
auto input = IntImage1DType::New();
IntImage1DType::SpacingValueType inputSpacing[1] = { 0.7 };
input->SetSpacing(inputSpacing);
IntImage1DType::PointValueType inputOrigin[1] = { 15 };
input->SetOrigin(inputOrigin);
IntImage1DType::SizeValueType inputSize = 1;
IntImage1DType::RegionType inputRegion;
inputRegion.SetSize(0, inputSize);
input->SetRegions(inputRegion);
input->Allocate();
// The inputValue can be any random value.
PixelType inputValue = 9;
input->FillBuffer(inputValue);
itk::ThresholdImageFilter<IntImage1DType>::Pointer threshold;
threshold = itk::ThresholdImageFilter<IntImage1DType>::New();
threshold->SetInput(input);
PixelType outsideValue = 99;
threshold->SetOutsideValue(outsideValue);
ITK_TEST_SET_GET_VALUE(outsideValue, threshold->GetOutsideValue());
IntImage1DType::IndexType index;
index.Fill(0);
PixelType lower = itk::NumericTraits<PixelType>::NonpositiveMin();
threshold->SetLower(lower);
ITK_TEST_SET_GET_VALUE(lower, threshold->GetLower());
PixelType upper = itk::NumericTraits<PixelType>::max();
threshold->SetUpper(upper);
ITK_TEST_SET_GET_VALUE(upper, threshold->GetUpper());
PixelType outputValue;
// Above inputValue-1
threshold->ThresholdAbove(inputValue - 1);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != outsideValue)
{
os = new std::ostringstream;
*os << "Filter above failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Above inputValue+1
threshold->ThresholdAbove(inputValue + 1);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != inputValue)
{
os = new std::ostringstream;
*os << "Filter above failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Above inputValue
// By definition, the values greater than the value are set to OutsideValue.
// So, with the threshold set to inputValue, the output should still be equal to the input.
threshold->ThresholdAbove(inputValue);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != inputValue)
{
os = new std::ostringstream;
*os << "Filter above failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Below inputValue-1
threshold->ThresholdBelow(inputValue - 1);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != inputValue)
{
os = new std::ostringstream;
*os << "Filter below failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Below inputValue+1
threshold->ThresholdBelow(inputValue + 1);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != outsideValue)
{
os = new std::ostringstream;
*os << "Filter below failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Below inputValue
// By definition, the values less than the value are set to OutsideValue
// So, with the threshold set to inputValue, the output should still be equal to the input.
threshold->ThresholdBelow(inputValue);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != inputValue)
{
os = new std::ostringstream;
*os << "Filter below failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Outside [inputValue-1 inputValue+1]
threshold->ThresholdOutside(inputValue - 1, inputValue + 1);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != inputValue)
{
os = new std::ostringstream;
*os << "Filter outside failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Outside [inputValue, inputValue+2]
// By definition, the values outside the range (less than lower or greater than upper) are set to OutsideValue
// So, with the threshold including inputValue=0, the output should still be equal to the input.
threshold->ThresholdOutside(inputValue, inputValue + 2);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != inputValue)
{
os = new std::ostringstream;
*os << "Filter outside failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
// Outside [inputValue+1, inputValue+3]
threshold->ThresholdOutside(inputValue + 1, inputValue + 3);
threshold->Update();
outputValue = threshold->GetOutput()->GetPixel(index);
if (outputValue != outsideValue)
{
os = new std::ostringstream;
*os << "Filter above failed:"
<< " lower: " << threshold->GetLower() << " upper: " << threshold->GetUpper() << " output: " << outputValue;
itk::OutputWindowDisplayText(os->str().c_str());
return EXIT_FAILURE;
}
}
itk::OutputWindowDisplayText("End of Test #4 -----------------------------------");
return EXIT_SUCCESS;
}
|
