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
|
/*=========================================================================
*
* 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 <iostream>
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkChangeInformationImageFilter.h"
#include "itkResampleImageFilter.h"
#include "itkTestingMacros.h"
/* Further testing of itkResampleImageFilter
* Test that ResampleImageFilter can handle a ReferenceImage with
* meta information that differs from the input imake.
* Output is compared with baseline image using the cmake itk_add_test
* '--compare' option.
*/
int
itkResampleImageTest3(int argc, char * argv[])
{
if (argc < 3)
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " inputImage resampledImage" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int VDimension = 2;
using PixelType = unsigned char;
using ImageType = itk::Image<PixelType, VDimension>;
using CoordRepType = double;
using TransformType = itk::IdentityTransform<CoordRepType, VDimension>;
using InterpolatorType = itk::LinearInterpolateImageFunction<ImageType, CoordRepType>;
using ReaderType = itk::ImageFileReader<ImageType>;
using WriterType = itk::ImageFileWriter<ImageType>;
using ChangeInfoType = itk::ChangeInformationImageFilter<ImageType>;
using ResampleFilterType = itk::ResampleImageFilter<ImageType, ImageType>;
auto reader1 = ReaderType::New();
reader1->SetFileName(argv[1]);
reader1->Update();
// Create an identity transformation
auto identityTransform = TransformType::New();
// Create a linear interpolation image function
auto interpolator = InterpolatorType::New();
// Create an image with flipped directions
ImageType::DirectionType direction;
direction[0][0] = -1.0;
direction[0][1] = 0.0;
direction[1][0] = 0.0;
direction[1][1] = -1.0;
ImageType::RegionType inputRegion = reader1->GetOutput()->GetLargestPossibleRegion();
ImageType::PointType origin;
origin[0] = inputRegion.GetSize()[0];
origin[1] = inputRegion.GetSize()[1];
auto changeInfo = ChangeInfoType::New();
changeInfo->ChangeDirectionOn();
changeInfo->SetOutputDirection(direction);
changeInfo->ChangeOriginOn();
changeInfo->SetOutputOrigin(origin);
changeInfo->SetInput(reader1->GetOutput());
// Create and configure a resampling filter
auto resample = ResampleFilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(resample, ResampleImageFilter, ImageToImageFilter);
resample->SetInput(reader1->GetOutput());
ITK_TEST_SET_GET_VALUE(reader1->GetOutput(), resample->GetInput());
resample->SetReferenceImage(changeInfo->GetOutput());
ITK_TEST_SET_GET_VALUE(changeInfo->GetOutput(), resample->GetReferenceImage());
resample->UseReferenceImageOn();
ITK_TEST_EXPECT_TRUE(resample->GetUseReferenceImage());
resample->SetTransform(identityTransform);
ITK_TEST_SET_GET_VALUE(identityTransform, resample->GetTransform());
resample->SetInterpolator(interpolator);
ITK_TEST_SET_GET_VALUE(interpolator, resample->GetInterpolator());
auto writer1 = WriterType::New();
writer1->SetFileName(argv[2]);
writer1->SetInput(resample->GetOutput());
ITK_TRY_EXPECT_NO_EXCEPTION(writer1->Update());
std::cout << "Test passed." << std::endl;
return EXIT_SUCCESS;
}
|
