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
|
/*=========================================================================
*
* 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.
*
*=========================================================================*/
/** Example illustrating use of functions to convert between complex valued
* voxels, magnitude and phase, and real and imaginary representations.
*
* \author Simon K. Warfield simon.warfield\@childrens.harvard.edu
*
* \note Attribution Notice. This research work was made possible by Grant
* Number R01 RR021885 (PI Simon K. Warfield, Ph.D.) from
* the National Center for Research Resources (NCRR), a component of the
* National Institutes of Health (NIH). Its contents are solely the
* responsibility of the authors and do not necessarily represent the
* official view of NCRR or NIH.
*
*/
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkComposeImageFilter.h"
#include "itkTestingMacros.h"
int
itkImageReadRealAndImaginaryWriteComplexTest(int argc, char * argv[])
{
if (argc != 4)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " inputReal inputImaginary outputComplex"
<< std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 2;
using InputPixelType = float;
using OutputPixelType = float;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputImageType = itk::Image<std::complex<OutputPixelType>, Dimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
using WriterType = itk::ImageFileWriter<OutputImageType>;
using RealAndImaginary2ComplexFilterType = itk::ComposeImageFilter<InputImageType, OutputImageType>;
auto readerReal = ReaderType::New();
auto readerImag = ReaderType::New();
auto writer = WriterType::New();
auto RealAndImaginary2Complex = RealAndImaginary2ComplexFilterType::New();
readerReal->SetFileName(argv[1]);
readerImag->SetFileName(argv[2]);
writer->SetFileName(argv[3]);
// Read the image and get its size
readerReal->Update();
readerImag->Update();
RealAndImaginary2Complex->SetInput1(readerReal->GetOutput());
RealAndImaginary2Complex->SetInput2(readerImag->GetOutput());
writer->SetInput(RealAndImaginary2Complex->GetOutput());
try
{
writer->Update();
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << "Error writing the magnitude image: " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
// check that the default template parameters work
using DefaultParametersFilterType = itk::ComposeImageFilter<InputImageType>;
auto temp = DefaultParametersFilterType::New();
if (temp.IsNull())
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
|
