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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 "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkLabelOverlayImageFilter.h"
#include "itkVectorImage.h"
#include "itkMath.h"
#include "itkTestingMacros.h"
int
itkLabelOverlayImageFilterTest(int argc, char * argv[])
{
constexpr int Dimension = 2;
if (argc < 5)
{
std::cerr << "Missing Parameters " << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " InputImage LabelImage Opacity OutputImage" << std::endl;
return 1;
}
using PixelType = unsigned char;
using ImageType = itk::Image<PixelType, Dimension>;
using ColorPixelType = itk::RGBPixel<unsigned char>;
using ColorImageType = itk::Image<ColorPixelType, Dimension>;
using ReaderType = itk::ImageFileReader<ImageType>;
// Read in the input image
auto reader = ReaderType::New();
reader->SetFileName(argv[1]);
// Read in the label image
auto reader2 = ReaderType::New();
reader2->SetFileName(argv[2]);
// Instantiate the filter
using FilterType = itk::LabelOverlayImageFilter<ImageType, ImageType, ColorImageType>;
auto filter = FilterType::New();
// Exercising Background Value methods
filter->SetBackgroundValue(10);
if (filter->GetBackgroundValue() != 10)
{
std::cerr << "Background value Set/Get Problem" << std::endl;
return EXIT_FAILURE;
}
// Exercise set/get opacity values
filter->SetOpacity(2);
if (itk::Math::NotExactlyEquals(filter->GetOpacity(), 2))
{
std::cerr << "Opacity Set/Get Problem" << std::endl;
return EXIT_FAILURE;
}
filter->SetOpacity(3);
if (itk::Math::NotExactlyEquals(filter->GetOpacity(), 3))
{
std::cerr << "Opacity Set/Get Problem" << std::endl;
return EXIT_FAILURE;
}
// Set the filter input and label images
filter->SetInput(reader->GetOutput());
filter->SetLabelImage(reader2->GetOutput());
filter->SetBackgroundValue(13);
// Set opacity
filter->SetOpacity(std::stod(argv[3]));
itk::SimpleFilterWatcher watcher(filter, "filter");
// Instantiate output image
using WriterType = itk::ImageFileWriter<ColorImageType>;
auto writer = WriterType::New();
writer->SetInput(filter->GetOutput());
writer->SetFileName(argv[4]);
try
{
writer->Update();
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
// exercise the methods to change the colors
unsigned int numberOfColors1 = filter->GetNumberOfColors();
filter->AddColor(1, 255, 255);
unsigned int numberOfColors2 = filter->GetNumberOfColors();
if (numberOfColors2 != numberOfColors1 + 1)
{
std::cerr << "Error in GetNumberOfColors() or AddColor() " << std::endl;
return EXIT_FAILURE;
}
filter->ResetColors();
filter->AddColor(255, 255, 255);
unsigned int numberOfColors3 = filter->GetNumberOfColors();
if (numberOfColors3 != 1)
{
std::cerr << "Error in GetNumberOfColors() or ResetColors() or AddColor() " << std::endl;
return EXIT_FAILURE;
}
// the following just ensures the filter can be instantiated with a
// VectorImage as output.
// using VectorImageType = itk::VectorImage< short, Dimension >;
// using LabelOverlayToVectorFilterType = itk::LabelOverlayImageFilter< ImageType, ImageType, VectorImageType >;
// std::cout << LabelOverlayToVectorFilterType::New();
return EXIT_SUCCESS;
}
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