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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 "itkSLICImageFilter.h"
#include "itkVectorImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkCommand.h"
#include "itkTestingMacros.h"
namespace
{
template <typename TFilterType>
void
iterationEventCallback(itk::Object * object, const itk::EventObject & event, void *)
{
static unsigned int iterationCount = 0;
const auto * slicFilter = dynamic_cast<const TFilterType *>(object);
if (!itk::IterationEvent().CheckEvent(&event) || !slicFilter)
{
return;
}
std::cout << "Iterations #: " << iterationCount++ << " Average Residual: " << slicFilter->GetAverageResidual()
<< std::endl;
}
template <typename TInputImageType>
int
itkSLICImageFilterTestHelper(const std::string & inFileName,
const std::string & outFileName,
const unsigned int gridSize,
bool enforceConnectivity)
{
const unsigned int Dimension = TInputImageType::ImageDimension;
using OutputImageType = itk::Image<unsigned short, Dimension>;
using InputImageType = TInputImageType;
using ReaderType = itk::ImageFileReader<InputImageType>;
auto reader = ReaderType::New();
reader->SetFileName(inFileName);
using FilterType = itk::SLICImageFilter<InputImageType, OutputImageType>;
auto filter = FilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(filter, SLICImageFilter, ImageToImageFilter);
filter->SetInput(reader->GetOutput());
filter->SetSuperGridSize(gridSize);
filter->SetEnforceConnectivity(enforceConnectivity);
filter->DebugOn();
itk::CStyleCommand::Pointer command = itk::CStyleCommand::New();
command->SetCallback(iterationEventCallback<FilterType>);
filter->AddObserver(itk::IterationEvent(), command);
using WriterType = itk::ImageFileWriter<OutputImageType>;
auto writer = WriterType::New();
writer->SetFileName(outFileName);
writer->SetInput(filter->GetOutput());
writer->Update();
return EXIT_SUCCESS;
}
} // namespace
int
itkSLICImageFilterTest(int argc, char * argv[])
{
if (argc < 3)
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << "inputFileName outputFileName [gridSize] [enforceConnectivity]" << std::endl;
return EXIT_FAILURE;
}
const bool enforceConnectivity = (argc > 4) ? std::stoi(argv[4]) : true;
const unsigned int gridSize = (argc > 3) ? std::stoi(argv[3]) : 20;
const char * inFileName = argv[1];
const char * outFileName = argv[2];
const unsigned int VDimension = 2;
using InputImageType = itk::VectorImage<float, VDimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
auto reader = ReaderType::New();
reader->SetFileName(inFileName);
reader->UpdateOutputInformation();
const unsigned int Dimension = reader->GetImageIO()->GetNumberOfDimensions();
const unsigned int numberOfComponents = reader->GetImageIO()->GetNumberOfComponents();
switch (Dimension)
{
case 1:
case 2:
if (numberOfComponents == 1)
{
itkSLICImageFilterTestHelper<itk::Image<float, 2>>(inFileName, outFileName, gridSize, enforceConnectivity);
}
else
{
itkSLICImageFilterTestHelper<itk::VectorImage<float, 2>>(
inFileName, outFileName, gridSize, enforceConnectivity);
}
break;
case 3:
if (numberOfComponents == 1)
{
itkSLICImageFilterTestHelper<itk::Image<float, 3>>(inFileName, outFileName, gridSize, enforceConnectivity);
}
else
{
itkSLICImageFilterTestHelper<itk::VectorImage<float, 3>>(
inFileName, outFileName, gridSize, enforceConnectivity);
}
break;
default:
std::cerr << "Unsupported Dimensions: " << Dimension << std::endl;
return EXIT_FAILURE;
}
std::cout << "Test finished." << std::endl;
return EXIT_SUCCESS;
}
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