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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 "itkLabelImageToLabelMapFilter.h"
#include "itkChangeLabelLabelMapFilter.h"
#include "itkLabelMapToLabelImageFilter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkTestingMacros.h"
int
itkChangeLabelLabelMapFilterTest(int argc, char * argv[])
{
if (argc < 5)
{
std::cerr << "usage: " << itkNameOfTestExecutableMacro(argv) << " inputLabelImage outputLabelImage ";
std::cerr << " old_label_1 new_label_1" << std::endl;
std::cerr << " [old_label_2 new_label_2]" << std::endl;
std::cerr << " [old_label_3 new_label_3]" << std::endl;
std::cerr << " ... " << std::endl;
std::cerr << " [old_label_n new_label_n]" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 2;
using ImagePixelType = unsigned char;
using LabelPixelType = unsigned char;
using ImageType = itk::Image<ImagePixelType, Dimension>;
using LabelObjectType = itk::LabelObject<LabelPixelType, Dimension>;
using LabelMapType = itk::LabelMap<LabelObjectType>;
using ReaderType = itk::ImageFileReader<ImageType>;
auto reader = ReaderType::New();
reader->SetFileName(argv[1]);
using I2LType = itk::LabelImageToLabelMapFilter<ImageType, LabelMapType>;
auto i2l = I2LType::New();
i2l->SetInput(reader->GetOutput());
using ChangeLabelFilterType = itk::ChangeLabelLabelMapFilter<LabelMapType>;
auto changeFilter = ChangeLabelFilterType::New();
changeFilter->SetInput(i2l->GetOutput());
constexpr unsigned int numberOfArgumentsBeforeLabels = 3;
const unsigned int numberOfArguments = argc;
using LabelPrintType = itk::NumericTraits<LabelPixelType>::PrintType;
for (unsigned int i = numberOfArgumentsBeforeLabels; i < numberOfArguments; i += 2)
{
const LabelPixelType oldLabel = std::stoi(argv[i]);
const LabelPixelType newLabel = std::stoi(argv[i + 1]);
std::cout << "Label pair : ";
std::cout << static_cast<LabelPrintType>(oldLabel) << " -> ";
std::cout << static_cast<LabelPrintType>(newLabel) << std::endl;
changeFilter->SetChange(oldLabel, newLabel);
}
itk::SimpleFilterWatcher watcher6(changeFilter, "filter");
using L2IType = itk::LabelMapToLabelImageFilter<LabelMapType, ImageType>;
auto l2i = L2IType::New();
l2i->SetInput(changeFilter->GetOutput());
using WriterType = itk::ImageFileWriter<ImageType>;
auto writer = WriterType::New();
writer->SetInput(l2i->GetOutput());
writer->SetFileName(argv[2]);
writer->UseCompressionOn();
ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());
std::cout << "GetNameOfClass() = " << changeFilter->GetNameOfClass() << std::endl;
changeFilter->Print(std::cout);
const ChangeLabelFilterType::ChangeMapType & mapOfLabel = changeFilter->GetChangeMap();
const unsigned int numberOfLabelsToReplace = (numberOfArguments - numberOfArgumentsBeforeLabels) / 2;
if (mapOfLabel.size() != numberOfLabelsToReplace)
{
std::cerr << "Error in SetChange() or in GetChangeMap() " << std::endl;
std::cerr << "numberOfLabelsToReplace = " << numberOfLabelsToReplace << std::endl;
std::cerr << "mapOfLabel.size() = " << mapOfLabel.size() << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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