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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 "itkDerivativeImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkTestingMacros.h"
int
itkDerivativeImageFilterTest(int argc, char * argv[])
{
if (argc != 6)
{
std::cerr << "Missing Parameters." << std::endl;
std::cerr << "Usage: " << std::endl;
std::cerr << itkNameOfTestExecutableMacro(argv) << " inputImageFile normalizedOutputImageFile "
<< " derivativeOrder direction useImageSpacing" << std::endl;
return EXIT_FAILURE;
}
// Test using an unsigned integral pixel type and generate a signed
// integral pixel type
using InputPixelType = unsigned short;
using OutputPixelType = short;
constexpr unsigned int Dimension = 2;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
auto reader = ReaderType::New();
reader->SetFileName(argv[1]);
// Define the filter
using FilterType = itk::DerivativeImageFilter<InputImageType, OutputImageType>;
auto filter = FilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(filter, DerivativeImageFilter, ImageToImageFilter);
// Set up the filter
unsigned int order = std::stoi(argv[3]);
filter->SetOrder(order);
ITK_TEST_SET_GET_VALUE(order, filter->GetOrder());
unsigned int direction = std::stoi(argv[4]);
filter->SetDirection(direction);
ITK_TEST_SET_GET_VALUE(direction, filter->GetDirection());
auto useImageSpacing = static_cast<bool>(std::stoi(argv[5]));
#if !defined(ITK_FUTURE_LEGACY_REMOVE)
if (useImageSpacing)
{
filter->SetUseImageSpacingOn();
}
else
{
filter->SetUseImageSpacingOff();
}
#endif
ITK_TEST_SET_GET_BOOLEAN(filter, UseImageSpacing, useImageSpacing);
itk::SimpleFilterWatcher watcher(filter, "Derivative");
// wire the pipeline
filter->SetInput(reader->GetOutput());
// Write the output
using WriteImageType = itk::Image<unsigned char, Dimension>;
using NormalizeFilterType = itk::RescaleIntensityImageFilter<OutputImageType, WriteImageType>;
using NormalizedWriterType = itk::ImageFileWriter<WriteImageType>;
auto normalizer = NormalizeFilterType::New();
auto normalizedWriter = NormalizedWriterType::New();
normalizer->SetInput(filter->GetOutput());
normalizedWriter->SetInput(normalizer->GetOutput());
normalizer->SetOutputMinimum(0);
normalizer->SetOutputMaximum(255);
normalizedWriter->SetFileName(argv[2]);
ITK_TRY_EXPECT_NO_EXCEPTION(normalizedWriter->Update());
std::cout << "Test finished" << std::endl;
return EXIT_SUCCESS;
}
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