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/*=========================================================================
*
* 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 "itkMagnitudeAndPhaseToComplexImageFilter.h"
#include "itkTestingMacros.h"
int
itkMagnitudeAndPhaseToComplexImageFilterTest(int argc, char * argv[])
{
if (argc != 4)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " inputMagnitude inputPhase outputComplex"
<< std::endl;
return EXIT_FAILURE;
}
const char * magnitudeImageFileName = argv[1];
const char * phaseImageFileName = argv[2];
const char * complexImageFileName = argv[3];
constexpr unsigned int Dimension = 2;
using InputPixelType = float;
using OutputPixelType = std::complex<InputPixelType>;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
auto magnitudeReader = ReaderType::New();
auto phaseReader = ReaderType::New();
magnitudeReader->SetFileName(magnitudeImageFileName);
phaseReader->SetFileName(phaseImageFileName);
using MagnitudeAndPhaseToComplexFilterType =
itk::MagnitudeAndPhaseToComplexImageFilter<InputImageType, InputImageType, OutputImageType>;
MagnitudeAndPhaseToComplexFilterType::Pointer magnitudeAndPhaseToComplexFilter =
MagnitudeAndPhaseToComplexFilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(
magnitudeAndPhaseToComplexFilter, MagnitudeAndPhaseToComplexImageFilter, BinaryGeneratorImageFilter);
magnitudeAndPhaseToComplexFilter->SetInput1(magnitudeReader->GetOutput());
magnitudeAndPhaseToComplexFilter->SetInput2(phaseReader->GetOutput());
using WriterType = itk::ImageFileWriter<OutputImageType>;
auto writer = WriterType::New();
writer->SetFileName(complexImageFileName);
writer->SetInput(magnitudeAndPhaseToComplexFilter->GetOutput());
ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());
// Check that the default template parameters work
using DefaultParametersFilterType = itk::MagnitudeAndPhaseToComplexImageFilter<InputImageType>;
auto temp = DefaultParametersFilterType::New();
if (temp.IsNull())
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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