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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 "itkLandmarkDisplacementFieldSource.h"
#include "itkImageFileWriter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkThinPlateSplineKernelTransform.h"
#include <fstream>
#include "itkTestingMacros.h"
int
itkLandmarkDisplacementFieldSourceTest(int argc, char * argv[])
{
if (argc < 3)
{
std::cerr << "Missing Parameters " << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " landmarksFile outputImage" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 2;
using VectorComponentType = float;
using VectorType = itk::Vector<VectorComponentType, Dimension>;
using DisplacementFieldType = itk::Image<VectorType, Dimension>;
using FilterType = itk::LandmarkDisplacementFieldSource<DisplacementFieldType>;
auto filter = FilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(filter, LandmarkDisplacementFieldSource, ImageSource);
itk::SimpleFilterWatcher watcher(filter);
DisplacementFieldType::SpacingType spacing;
spacing.Fill(1.0);
DisplacementFieldType::PointType origin;
origin.Fill(0.0);
DisplacementFieldType::RegionType region;
DisplacementFieldType::SizeType size;
DisplacementFieldType::IndexType start;
size[0] = 128;
size[1] = 128;
start[0] = 0;
start[1] = 0;
region.SetSize(size);
region.SetIndex(start);
DisplacementFieldType::DirectionType direction;
direction.SetIdentity();
auto kernelTransform = itk::ThinPlateSplineKernelTransform<double, FilterType::ImageDimension>::New();
filter->SetKernelTransform(kernelTransform);
ITK_TEST_SET_GET_VALUE(kernelTransform, filter->GetKernelTransform());
filter->SetOutputSpacing(spacing);
ITK_TEST_SET_GET_VALUE(spacing, filter->GetOutputSpacing());
filter->SetOutputOrigin(origin);
ITK_TEST_SET_GET_VALUE(origin, filter->GetOutputOrigin());
filter->SetOutputRegion(region);
ITK_TEST_SET_GET_VALUE(region, filter->GetOutputRegion());
filter->SetOutputDirection(direction);
ITK_TEST_SET_GET_VALUE(direction, filter->GetOutputDirection());
// Create source and target landmarks.
//
using LandmarkContainerType = FilterType::LandmarkContainer;
using LandmarkPointType = FilterType::LandmarkPointType;
auto sourceLandmarks = LandmarkContainerType::New();
auto targetLandmarks = LandmarkContainerType::New();
LandmarkPointType sourcePoint;
LandmarkPointType targetPoint;
std::ifstream pointsFile;
pointsFile.open(argv[1]);
unsigned int pointId = 0;
pointsFile >> sourcePoint;
pointsFile >> targetPoint;
while (!pointsFile.fail())
{
sourceLandmarks->InsertElement(pointId, sourcePoint);
targetLandmarks->InsertElement(pointId, targetPoint);
pointId++;
std::cout << sourcePoint << " -->> " << targetPoint << std::endl;
pointsFile >> sourcePoint;
pointsFile >> targetPoint;
}
pointsFile.close();
filter->SetSourceLandmarks(sourceLandmarks);
filter->SetTargetLandmarks(targetLandmarks);
try
{
filter->UpdateLargestPossibleRegion();
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
}
// Write an image for regression testing
using WriterType = itk::ImageFileWriter<DisplacementFieldType>;
auto writer = WriterType::New();
writer->SetInput(filter->GetOutput());
writer->SetFileName(argv[2]);
try
{
writer->Update();
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << "Exception thrown by writer" << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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