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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 "itkTestingMacros.h"
#include "itkGDCMImageIO.h"
#include "itkRGBPixel.h"
#include "itkVectorImage.h"
namespace
{
template <typename TImageType>
int
ReadWrite(const std::string & inputImage, const std::string & outputImage)
{
using ImageType = TImageType;
auto reader = itk::ImageFileReader<ImageType>::New();
reader->SetFileName(inputImage);
auto gdcmImageIO = itk::GDCMImageIO::New();
reader->SetImageIO(gdcmImageIO);
ITK_TRY_EXPECT_NO_EXCEPTION(reader->Update());
auto image = reader->GetOutput();
image->GetMetaDataDictionary().Clear();
auto writer = itk::ImageFileWriter<ImageType>::New();
writer->SetInput(image);
writer->SetFileName(outputImage);
writer->UseCompressionOn();
ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());
return EXIT_SUCCESS;
}
template <unsigned int Dimension>
int
internalMain(const std::string & inputImage,
const std::string & outputImage,
const std::string & expectedPixelType,
itk::GDCMImageIO::Pointer gdcmImageIO)
{
const unsigned int numberOfComponents = gdcmImageIO->GetNumberOfComponents();
using IOPixelType = itk::IOPixelEnum;
IOPixelType pixelType = gdcmImageIO->GetPixelType();
switch (pixelType)
{
case IOPixelType::SCALAR:
ITK_TEST_EXPECT_EQUAL(numberOfComponents, 1);
ITK_TEST_EXPECT_EQUAL(gdcmImageIO->GetPixelTypeAsString(pixelType), expectedPixelType);
return ReadWrite<itk::Image<float, Dimension>>(inputImage, outputImage);
case IOPixelType::RGB:
ITK_TEST_EXPECT_EQUAL(numberOfComponents, 3);
ITK_TEST_EXPECT_EQUAL(gdcmImageIO->GetPixelTypeAsString(pixelType), expectedPixelType);
return ReadWrite<itk::Image<itk::RGBPixel<unsigned char>, Dimension>>(inputImage, outputImage);
case IOPixelType::VECTOR:
ITK_TEST_EXPECT_EQUAL(gdcmImageIO->GetPixelTypeAsString(pixelType), expectedPixelType);
return ReadWrite<itk::VectorImage<float, Dimension>>(inputImage, outputImage);
default:
std::cerr << "Test does not support pixel type of " << gdcmImageIO->GetPixelTypeAsString(pixelType) << std::endl;
return EXIT_FAILURE;
}
}
} // namespace
int
itkGDCMImageReadWriteTest(int argc, char * argv[])
{
if (argc < 4)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " InputImage OutputImage expectedPixelType" << std::endl;
return EXIT_FAILURE;
}
const char * inputImage = argv[1];
const char * outputImage = argv[2];
const char * expectedPixelType = argv[3];
auto gdcmImageIO = itk::GDCMImageIO::New();
gdcmImageIO->SetFileName(inputImage);
ITK_TRY_EXPECT_NO_EXCEPTION(gdcmImageIO->ReadImageInformation());
std::cout << gdcmImageIO << std::endl;
unsigned int dimension = gdcmImageIO->GetNumberOfDimensions();
switch (dimension)
{
case 2:
return internalMain<2>(inputImage, outputImage, expectedPixelType, gdcmImageIO);
case 3:
return internalMain<3>(inputImage, outputImage, expectedPixelType, gdcmImageIO);
default:
std::cerr << "Test only supports dimensions 2 and 3. Detected dimension " << dimension << std::endl;
return EXIT_FAILURE;
}
}
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