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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 <fstream>
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkStreamingImageFilter.h"
#include "itkMedianImageFilter.h"
#include "itkMetaImageIO.h"
#include "itkTestingMacros.h"
int
itkMetaImageStreamingIOTest(int argc, char * argv[])
{
if (argc < 3)
{
std::cerr << "Missing Parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " inputFilename outputFilename [numberOfDataPieces]"
<< std::endl;
return EXIT_FAILURE;
}
// Image types are defined below.
using InputPixelType = unsigned char;
using OutputPixelType = unsigned char;
constexpr unsigned int Dimension = 3;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
using WriterType = itk::ImageFileWriter<OutputImageType>;
using IOType = itk::MetaImageIO;
using FilterType = itk::MedianImageFilter<OutputImageType, OutputImageType>;
using StreamingFilterType = itk::StreamingImageFilter<OutputImageType, OutputImageType>;
auto filter = FilterType::New();
auto streamer = StreamingFilterType::New();
auto reader = ReaderType::New();
auto writer = WriterType::New();
auto metaIn = IOType::New();
auto metaOut = IOType::New();
reader->SetImageIO(metaIn);
writer->SetImageIO(metaOut);
const std::string inputFilename = argv[1];
const std::string outputFilename = argv[2];
reader->SetFileName(inputFilename);
reader->SetUseStreaming(true);
writer->SetFileName(outputFilename);
InputImageType::SizeType indexRadius;
indexRadius[0] = 1; // radius along x
indexRadius[1] = 1; // radius along y
indexRadius[2] = 1; // radius along Z
filter->SetRadius(indexRadius);
// filter->SetInput( reader->GetOutput() );
streamer->SetInput(reader->GetOutput());
writer->SetInput(streamer->GetOutput());
// test streaming check methods
if (!metaIn->CanStreamRead())
{
std::cerr << "Failed stream read check" << std::endl;
return EXIT_FAILURE;
}
if (!metaOut->CanStreamWrite())
{
std::cerr << "Failed stream write check" << std::endl;
return EXIT_FAILURE;
}
// By default we decide to use 4 pieces, but this value can
// be changed from the command line.
unsigned int numberOfDataPieces = 4;
if (argc > 3)
{
numberOfDataPieces = std::stoi(argv[3]);
}
streamer->SetNumberOfStreamDivisions(numberOfDataPieces);
try
{
writer->Update();
}
catch (const itk::ExceptionObject & err)
{
std::cerr << "ExceptionObject caught !" << std::endl;
std::cerr << err << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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