ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Core/Common/AddNoiseToBinaryImage/Code.cxx
/*=========================================================================
*
* 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
*
* http://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 "itkImage.h"
int
main(int argc, char * argv[])
{
if (argc < 3)
{
std::cerr << "Usage: " << argv[0] << " inputFile outputFile [percent]" << std::endl;
return EXIT_FAILURE;
}
double percent = .1;
if (argc > 3)
{
percent = std::stod(argv[3]);
if (percent >= 1.0)
{
percent /= 100.0;
}
}
using ImageType = itk::Image<unsigned char, 2>;
using ReaderType = itk::ImageFileReader<ImageType>;
using WriterType = itk::ImageFileWriter<ImageType>;
// Read the binary file
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(argv[1]);
reader->Update();
// At x% of the pixels, add a uniform random value between 0 and 255
IteratorType it(reader->GetOutput(), reader->GetOutput()->GetLargestPossibleRegion());
it.SetNumberOfSamples(reader->GetOutput()->GetLargestPossibleRegion().GetNumberOfPixels() * percent);
std::cout << "Number of random samples: " << it.GetNumberOfSamples() << std::endl;
GeneratorType::Pointer random = GeneratorType::New();
it.GoToBegin();
while (!it.IsAtEnd())
{
it.Set(random->GetUniformVariate(0, 255));
++it;
}
// Write the file
WriterType::Pointer writer = WriterType::New();
writer->SetFileName(argv[2]);
writer->SetInput(reader->GetOutput());
writer->Update();
return EXIT_SUCCESS;
}
itk::Statistics::MersenneTwisterRandomVariateGenerator
MersenneTwisterRandom random variate generator.
Definition: itkMersenneTwisterRandomVariateGenerator.h:127
itk::ImageRandomNonRepeatingIteratorWithIndex
A multi-dimensional image iterator that visits image pixels within a region in a random order,...
Definition: itkImageRandomNonRepeatingIteratorWithIndex.h:78
itkImageFileReader.h
itkImage.h
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::ImageFileWriter
Writes image data to a single file.
Definition: itkImageFileWriter.h:87
itkImageRandomNonRepeatingIteratorWithIndex.h
itkMersenneTwisterRandomVariateGenerator.h
itkImageFileWriter.h
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86