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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 "itkBinaryThresholdImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkVotingBinaryHoleFillingImageFilter.h"
#include "itkTextOutput.h"
#include "itkTestingMacros.h"
int
itkVotingBinaryHoleFillingImageFilterTest(int argc, char * argv[])
{
if (argc != 3)
{
std::cerr << "Missing arguments" << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " Inputimage OutputImage" << std::endl;
return EXIT_FAILURE;
}
// Define the dimension of the images
constexpr unsigned int Dimension = 2;
// Declare the pixel types of the images
using InputPixelType = unsigned short;
using OutputPixelType = unsigned char;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
using WriterType = itk::ImageFileWriter<OutputImageType>;
auto reader = ReaderType::New();
reader->SetFileName(argv[1]);
ITK_TRY_EXPECT_NO_EXCEPTION(reader->Update());
InputImageType::PixelType foreground = 97; // Prime numbers are good testers
InputImageType::PixelType background = 29;
itk::BinaryThresholdImageFilter<InputImageType, InputImageType>::Pointer thresholder =
itk::BinaryThresholdImageFilter<InputImageType, InputImageType>::New();
thresholder->SetInput(reader->GetOutput());
thresholder->SetLowerThreshold(30);
thresholder->SetUpperThreshold(100);
thresholder->SetInsideValue(foreground);
thresholder->SetOutsideValue(background);
// Define the voting binary hole filling filter
using VotingBinaryHoleFillingImageFilterType =
itk::VotingBinaryHoleFillingImageFilter<InputImageType, OutputImageType>;
auto voting = VotingBinaryHoleFillingImageFilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(voting, VotingBinaryHoleFillingImageFilter, VotingBinaryImageFilter);
// Define the neighborhood size used for the voting filter (3x3)
InputImageType::SizeType neighRadius;
neighRadius[0] = 1;
neighRadius[1] = 1;
voting->SetRadius(neighRadius);
// Set the number of pixels over 50% that will tip the decision about
// switching a pixel
unsigned int majorityThreshold = 1;
voting->SetMajorityThreshold(majorityThreshold);
ITK_TEST_SET_GET_VALUE(majorityThreshold, voting->GetMajorityThreshold());
voting->SetForegroundValue(foreground);
voting->SetBackgroundValue(background);
voting->SetInput(thresholder->GetOutput());
// Execute the filter
ITK_TRY_EXPECT_NO_EXCEPTION(voting->Update());
std::cout << "Number of pixels changed: " << voting->GetNumberOfPixelsChanged() << std::endl;
auto writer = WriterType::New();
writer->SetInput(voting->GetOutput());
writer->SetFileName(argv[2]);
ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());
std::cout << "Test finished" << std::endl;
return EXIT_SUCCESS;
}
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