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itkVkComplexToComplex1DFFTImageFilterBaselineTest.cxx
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itkVkComplexToComplex1DFFTImageFilterBaselineTest.cxx
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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
*
* http://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 <complex>
#include <string>
#include "itkComplexToRealImageFilter.h"
#include "itkComposeImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkVkComplexToComplex1DFFTImageFilter.h"
#include "itkTestingMacros.h"
template <typename FFTType>
int
doTest(const char * inputRealFullImage, const char * inputImaginaryFullImage, const char * outputImage)
{
using ComplexImageType = typename FFTType::InputImageType;
using ImageType = itk::Image<typename itk::NumericTraits<typename ComplexImageType::PixelType>::ValueType,
ComplexImageType::ImageDimension>;
using ReaderType = itk::ImageFileReader<ImageType>;
using JoinFilterType = itk::ComposeImageFilter<ImageType, ComplexImageType>;
using ToRealFilterType = itk::ComplexToRealImageFilter<ComplexImageType, ImageType>;
using WriterType = itk::ImageFileWriter<ImageType>;
typename ReaderType::Pointer readerReal{ ReaderType::New() };
typename ReaderType::Pointer readerImag{ ReaderType::New() };
typename FFTType::Pointer fft{ FFTType::New() };
typename JoinFilterType::Pointer joinFilter{ JoinFilterType::New() };
typename ToRealFilterType::Pointer toReal{ ToRealFilterType::New() };
typename WriterType::Pointer writer{ WriterType::New() };
readerReal->SetFileName(inputRealFullImage);
readerImag->SetFileName(inputImaginaryFullImage);
joinFilter->SetInput1(readerReal->GetOutput());
joinFilter->SetInput2(readerImag->GetOutput());
fft->SetTransformDirection(FFTType::INVERSE);
fft->SetInput(joinFilter->GetOutput());
toReal->SetInput(fft->GetOutput());
writer->SetInput(toReal->GetOutput());
writer->SetFileName(outputImage);
ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());
fft.Print(std::cout);
return EXIT_SUCCESS;
}
int
itkVkComplexToComplex1DFFTImageFilterBaselineTest(int argc, char * argv[])
{
if (argc < 3)
{
std::cerr << "Missing Parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " inputImageRealFull inputImageImaginaryFull outputImage" << std::endl;
std::cerr << std::flush;
return EXIT_FAILURE;
}
using PixelType = double;
const unsigned int Dimension{ 2 };
using ComplexImageType = itk::Image<std::complex<PixelType>, Dimension>;
using FFTInverseType = itk::VkComplexToComplex1DFFTImageFilter<ComplexImageType>;
// Instantiate a filter to exercise basic object methods
typename FFTInverseType::Pointer fft{ FFTInverseType::New() };
ITK_EXERCISE_BASIC_OBJECT_METHODS(fft, VkComplexToComplex1DFFTImageFilter, ComplexToComplex1DFFTImageFilter);
return doTest<FFTInverseType>(argv[1], argv[2], argv[3]);
}