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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 "itkImageFilterToVideoFilterWrapper.h"
#include "itkImage.h"
#include "itkRecursiveGaussianImageFilter.h"
#include "itkVideoFileReader.h"
#include "itkVideoFileWriter.h"
#include "itkImageFileReader.h"
#include "itkFileListVideoIO.h"
#include "itkFileListVideoIOFactory.h"
#include "itkTestingComparisonImageFilter.h"
#include "itkTestingMacros.h"
/**
* Main test
*/
int
itkImageFilterToVideoFilterWrapperTest(int argc, char * argv[])
{
// Check parameters
if (argc < 3)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " input_video output_video" << std::endl;
return EXIT_FAILURE;
}
// Get the lists of input and output files
std::vector<std::string> inputFiles = itk::FileListVideoIO::SplitFileNames(argv[1]);
std::vector<std::string> outputFiles = itk::FileListVideoIO::SplitFileNames(argv[2]);
if (inputFiles.size() != outputFiles.size())
{
std::cerr << "Must specify the same number of input and output frames" << std::endl;
return EXIT_FAILURE;
}
// Typedefs
using PixelType = unsigned char;
using FrameType = itk::Image<PixelType, 2>;
using VideoType = itk::VideoStream<FrameType>;
using GaussianImageFilterType = itk::RecursiveGaussianImageFilter<FrameType, FrameType>;
using GaussianVideoFilterType = itk::ImageFilterToVideoFilterWrapper<GaussianImageFilterType>;
using VideoReaderType = itk::VideoFileReader<VideoType>;
using VideoWriterType = itk::VideoFileWriter<VideoType>;
// Register FileListVideoIO with the factory -- shouldn't have to do this. Needs fixing
itk::ObjectFactoryBase::RegisterFactory(itk::FileListVideoIOFactory::New());
// Set up reader and writer
auto reader = VideoReaderType::New();
auto writer = VideoWriterType::New();
reader->SetFileName(argv[1]);
writer->SetFileName(argv[2]);
// Instantiate a new video filter and an image filter
auto imgGauss = GaussianImageFilterType::New();
auto vidGauss = GaussianVideoFilterType::New();
// Set the parameters on the image filter and plug it into the video filter
imgGauss->SetSigma(3);
vidGauss->SetImageFilter(imgGauss);
// String the pipeline together
vidGauss->SetInput(reader->GetOutput());
writer->SetInput(vidGauss->GetOutput());
// Run the pipeline
writer->Update();
//
// Check output
//
using ImageReaderType = itk::ImageFileReader<FrameType>;
using DifferenceFilterType = itk::Testing::ComparisonImageFilter<FrameType, FrameType>;
auto imReader1 = ImageReaderType::New();
auto imReader2 = ImageReaderType::New();
auto differ = DifferenceFilterType::New();
imgGauss->SetInput(imReader1->GetOutput());
differ->SetValidInput(imgGauss->GetOutput());
differ->SetTestInput(imReader2->GetOutput());
for (unsigned int i = 0; i < inputFiles.size(); ++i)
{
imReader1->SetFileName(inputFiles[i]);
imReader2->SetFileName(outputFiles[i]);
differ->Update();
if (itk::Math::NotAlmostEquals(differ->GetTotalDifference(), 0))
{
std::cerr << "Frame " << i << " didn't produce the correct output. Difference = " << differ->GetTotalDifference()
<< std::endl;
return EXIT_FAILURE;
}
}
//////
// Return successfully
//////
return EXIT_SUCCESS;
}
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