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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 <iostream>
#include "itkImageRandomIteratorWithIndex.h"
#include "itkImageFileWriter.h"
#include "itkImageFileReader.h"
#include "itkTestingComparisonImageFilter.h"
#include "itkTestingMacros.h"
int
itkImageRandomIteratorTest2(int argc, char * argv[])
{
if (argc < 2)
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " outputImageFile" << std::endl;
std::cerr << "[baselineImage differenceImage]" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int ImageDimension = 2;
using PixelType = unsigned long;
using ImageType = itk::Image<PixelType, ImageDimension>;
auto image = ImageType::New();
ImageType::SizeType size;
size[0] = 1000;
size[1] = 1000;
unsigned long numberOfSamples = size[0] * size[1];
ImageType::IndexType start;
start.Fill(0);
ImageType::RegionType region{ start, size };
image->SetRegions(region);
image->AllocateInitialized();
using RandomIteratorType = itk::ImageRandomIteratorWithIndex<ImageType>;
RandomIteratorType it(image, region);
it.SetNumberOfSamples(numberOfSamples);
it.GoToBegin();
PixelType counter = 0;
//
// Write down the order in which pixels are visited
//
while (!it.IsAtEnd())
{
it.Set(counter);
++it;
++counter;
}
itk::WriteImage(image, argv[1]);
if (argc > 4)
{
using DifferencePixelType = long;
using DifferenceImageType = itk::Image<DifferencePixelType, ImageDimension>;
using DifferenceFilterType = itk::Testing::ComparisonImageFilter<ImageType, DifferenceImageType>;
auto difference = DifferenceFilterType::New();
difference->SetValidInput(image);
difference->SetTestInput(itk::ReadImage<ImageType>(argv[2]));
difference->SetToleranceRadius(0);
difference->SetDifferenceThreshold(0);
using DifferenceWriterType = itk::ImageFileWriter<DifferenceImageType>;
auto writer2 = DifferenceWriterType::New();
writer2->SetInput(difference->GetOutput());
ITK_TRY_EXPECT_NO_EXCEPTION(writer2->Update());
std::cout << "Number of pixels with differences = ";
std::cout << difference->GetNumberOfPixelsWithDifferences() << std::endl;
}
return EXIT_SUCCESS;
}
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