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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 "itkOrientImageFilter.h"
#include "itkImageToImageFilter.h"
#include "itkTestingMacros.h"
#include "vnl/vnl_sample.h"
using ImageType = itk::Image<unsigned int, 3>;
ImageType::Pointer
CreateRandomImage()
{
const ImageType::SizeType imageSize = { { 4, 4, 4 } };
const ImageType::IndexType imageIndex = { { 0, 0, 0 } };
ImageType::RegionType region{ imageIndex, imageSize };
auto img = ImageType::New();
img->SetRegions(region);
img->Allocate();
itk::ImageRegionIterator<ImageType> ri(img, region);
while (!ri.IsAtEnd())
{
ri.Set(static_cast<unsigned int>(vnl_sample_uniform(0, 32767)));
++ri;
}
return img;
}
static void
PrintImg(ImageType::Pointer img)
{
ImageType::IndexType Index;
for (Index[2] = 0; Index[2] < 4; Index[2]++)
{
for (Index[1] = 0; Index[1] < 4; Index[1]++)
{
for (Index[0] = 0; Index[0] < 4; Index[0]++)
{
std::cerr << img->GetPixel(Index) << ' ';
}
std::cerr << std::endl;
}
std::cerr << std::endl;
}
}
int
itkOrientImageFilterTest(int argc, char * argv[])
{
if (argc != 2)
{
std::cerr << "Missing Parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " useImageDirection" << std::endl;
return EXIT_FAILURE;
}
itk::MultiThreaderBase::SetGlobalMaximumNumberOfThreads(1);
ImageType::Pointer randImage = CreateRandomImage();
std::cerr << "Original" << std::endl;
PrintImg(randImage);
itk::OrientImageFilter<ImageType, ImageType>::Pointer orienter = itk::OrientImageFilter<ImageType, ImageType>::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(orienter, OrientImageFilter, ImageToImageFilter);
auto useImageDirection = static_cast<bool>(std::stoi(argv[1]));
ITK_TEST_SET_GET_BOOLEAN(orienter, UseImageDirection, useImageDirection);
orienter->SetGivenCoordinateOrientation(
itk::SpatialOrientationEnums::ValidCoordinateOrientations::ITK_COORDINATE_ORIENTATION_RIP);
orienter->SetInput(randImage);
// Try permuting axes
orienter->SetDesiredCoordinateOrientation(
itk::SpatialOrientationEnums::ValidCoordinateOrientations::ITK_COORDINATE_ORIENTATION_IRP);
orienter->Update();
ImageType::Pointer IRP = orienter->GetOutput();
std::cerr << "IRP" << std::endl;
PrintImg(IRP);
ImageType::RegionType::SizeType originalSize = randImage->GetLargestPossibleRegion().GetSize();
ImageType::RegionType::SizeType transformedSize = IRP->GetLargestPossibleRegion().GetSize();
ImageType::IndexType originalIndex, transformedIndex;
for (originalIndex[2] = transformedIndex[2] = 0;
originalIndex[2] < static_cast<ImageType::IndexType::IndexValueType>(originalSize[2]);
originalIndex[2]++, transformedIndex[2]++)
{
for (originalIndex[1] = transformedIndex[0] = 0;
originalIndex[1] < static_cast<ImageType::IndexType::IndexValueType>(originalSize[1]);
originalIndex[1]++, transformedIndex[0]++)
{
for (originalIndex[0] = transformedIndex[1] = 0;
originalIndex[0] < static_cast<ImageType::IndexType::IndexValueType>(originalSize[0]);
originalIndex[0]++, transformedIndex[1]++)
{
ImageType::PixelType orig = randImage->GetPixel(originalIndex);
ImageType::PixelType xfrm = IRP->GetPixel(transformedIndex);
if (orig != xfrm)
{
return EXIT_FAILURE;
}
}
}
}
// Go to LIP to check flipping an axis
orienter = itk::OrientImageFilter<ImageType, ImageType>::New();
orienter->SetInput(randImage);
orienter->SetGivenCoordinateOrientation(
itk::SpatialOrientationEnums::ValidCoordinateOrientations::ITK_COORDINATE_ORIENTATION_RIP);
orienter->SetDesiredCoordinateOrientation(
itk::SpatialOrientationEnums::ValidCoordinateOrientations::ITK_COORDINATE_ORIENTATION_LIP);
orienter->Update();
ImageType::Pointer LIP = orienter->GetOutput();
std::cerr << "LIP" << std::endl;
PrintImg(LIP);
transformedSize = LIP->GetLargestPossibleRegion().GetSize();
for (originalIndex[2] = transformedIndex[2] = 0;
originalIndex[2] < static_cast<ImageType::IndexType::IndexValueType>(originalSize[2]);
originalIndex[2]++, transformedIndex[2]++)
{
for (originalIndex[1] = transformedIndex[1] = 0;
originalIndex[1] < static_cast<ImageType::IndexType::IndexValueType>(originalSize[1]);
originalIndex[1]++, transformedIndex[1]++)
{
for (originalIndex[0] = 0, transformedIndex[0] = transformedSize[0] - 1;
originalIndex[0] < static_cast<ImageType::IndexType::IndexValueType>(originalSize[0]);
originalIndex[0]++, transformedIndex[0]--)
{
ImageType::PixelType orig = randImage->GetPixel(originalIndex);
ImageType::PixelType xfrm = LIP->GetPixel(transformedIndex);
if (orig != xfrm)
{
return EXIT_FAILURE;
}
}
}
}
return EXIT_SUCCESS;
}
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