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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.
*
*=========================================================================*/
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkJoinSeriesImageFilter.h"
#include "itkExtractImageFilter.h"
#include "itkPipelineMonitorImageFilter.h"
#include "itkTestingMacros.h"
int
itkJoinSeriesImageFilterStreamingTest(int argc, char * argv[])
{
using ImageType = itk::Image<unsigned char, 3>;
using SliceImageType = itk::Image<unsigned char, 2>;
using ImageFileReaderType = itk::ImageFileReader<ImageType>;
using SliceExtractorFilterType = itk::ExtractImageFilter<ImageType, SliceImageType>;
using JoinSeriesFilterType = itk::JoinSeriesImageFilter<SliceImageType, ImageType>;
using ImageFileWriterType = itk::ImageFileWriter<ImageType>;
if (argc < 3)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " InputImage OutputImage" << std::endl;
return EXIT_FAILURE;
}
std::string inputFileName = argv[1];
std::string outputFileName = argv[2];
auto reader = ImageFileReaderType::New();
reader->SetFileName(inputFileName);
reader->UpdateOutputInformation();
const auto numberOfSlices =
itk::Math::CastWithRangeCheck<unsigned int>(reader->GetOutput()->GetLargestPossibleRegion().GetSize(2));
itk::PipelineMonitorImageFilter<ImageType>::Pointer monitor1 = itk::PipelineMonitorImageFilter<ImageType>::New();
monitor1->SetInput(reader->GetOutput());
std::vector<itk::ProcessObject::Pointer> savedPointers;
auto joinSeries = JoinSeriesFilterType::New();
joinSeries->SetOrigin(reader->GetOutput()->GetOrigin()[2]);
joinSeries->SetSpacing(reader->GetOutput()->GetSpacing()[2]);
for (ImageType::SizeValueType z = 0; z < numberOfSlices; ++z)
{
auto extractor = SliceExtractorFilterType::New();
extractor->SetDirectionCollapseToSubmatrix();
SliceExtractorFilterType::InputImageRegionType slice(reader->GetOutput()->GetLargestPossibleRegion());
slice.SetSize(2, 0);
slice.SetIndex(2, z);
extractor->SetExtractionRegion(slice);
extractor->SetInput(monitor1->GetOutput());
extractor->InPlaceOn();
extractor->ReleaseDataFlagOn();
savedPointers.emplace_back(extractor);
joinSeries->PushBackInput(extractor->GetOutput());
}
itk::PipelineMonitorImageFilter<ImageType>::Pointer monitor2 = itk::PipelineMonitorImageFilter<ImageType>::New();
monitor2->SetInput(joinSeries->GetOutput());
auto writer = ImageFileWriterType::New();
writer->SetInput(monitor2->GetOutput());
writer->SetFileName(outputFileName);
writer->SetNumberOfStreamDivisions(numberOfSlices);
try
{
writer->Update();
}
catch (...)
{
std::cerr << "Exception while trying to stream write file." << std::endl;
throw;
}
std::cout << "Number of Updates: " << monitor1->GetNumberOfUpdates() << std::endl;
std::cout << "Verifying ImageFileReader to ExtractImageFilter pipeline interaction" << std::endl;
// We can not use one of the standard verify all methods due to
// multiple filters connected to the output of the reader
if (!(monitor1->VerifyInputFilterExecutedStreaming(numberOfSlices) &&
monitor1->VerifyInputFilterMatchedUpdateOutputInformation()))
{
std::cerr << monitor1;
return EXIT_FAILURE;
}
std::cout << "Verifying JoinSeriesImageFilter to ImageFileWriter pipeline interaction" << std::endl;
if (!monitor2->VerifyAllInputCanStream(numberOfSlices))
{
std::cerr << monitor2;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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