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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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
*
* http://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.
*
*=========================================================================*/
/**
* This tests that kernel transforms are initialized correctly when they are loaded
* A transform is created, written to a file, loaded, and the result of the transform
* are compared to the expected results.
*/
#include "itkTransformFileWriter.h"
#include "itkTransformFileReader.h"
#include "itkElasticBodySplineKernelTransform.h"
#include "itkElasticBodyReciprocalSplineKernelTransform.h"
#include "itkThinPlateSplineKernelTransform.h"
#include "itkThinPlateR2LogRSplineKernelTransform.h"
#include "itkVolumeSplineKernelTransform.h"
#include "itksys/SystemTools.hxx"
#include "itkTestingMacros.h"
#include "itkHDF5TransformIOFactory.h"
#include "itkHDF5TransformIO.h"
#include <itkTransformFactory.h>
template<typename TransformType>
static int ReadWriteTest(const char * const fileName)
{
const double epsilon = 1e-12;
typedef typename TransformType::ScalarType ParametersValueType;
// Create transform
typename TransformType::Pointer transform = TransformType::New();
typedef typename TransformType::InputPointType PointType;
typedef typename TransformType::PointsIterator PointsIteratorType;
typedef typename TransformType::PointSetType PointSetType;
PointType sourcePoint;
PointType targetPoint;
PointType mappedPoint;
// Reserve memory for the number of points
typename PointSetType::Pointer sourceLandmarks = PointSetType::New();
typename PointSetType::Pointer targetLandmarks = PointSetType::New();
sourceLandmarks->GetPoints()->Reserve( 4 );
targetLandmarks->GetPoints()->Reserve( 4 );
// Create landmark sets
PointsIteratorType sourceit = sourceLandmarks->GetPoints()->Begin();
PointsIteratorType targetit = targetLandmarks->GetPoints()->Begin();
PointsIteratorType sourceend = sourceLandmarks->GetPoints()->End();
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 2; j++)
{
sourcePoint[0] = j;
sourcePoint[1] = i;
sourceit.Value() = sourcePoint;
targetPoint[0] = 3*j;
targetPoint[1] = 3*i;
targetit.Value() = targetPoint;
sourceit++;
targetit++;
}
}
transform->SetSourceLandmarks( sourceLandmarks );
transform->SetTargetLandmarks( targetLandmarks );
transform->ComputeWMatrix();
sourceit = sourceLandmarks->GetPoints()->Begin();
targetit = targetLandmarks->GetPoints()->Begin();
sourceend = sourceLandmarks->GetPoints()->End();
while( sourceit != sourceend )
{
sourcePoint = sourceit.Value();
targetPoint = targetit.Value();
mappedPoint = transform->TransformPoint(sourcePoint);
std::cout << sourcePoint << " : " << targetPoint;
std::cout << " warps to: " << mappedPoint << std::endl;
if( mappedPoint.EuclideanDistanceTo( targetPoint ) > epsilon )
{
return EXIT_FAILURE;
}
++sourceit;
++targetit;
}
// Write transform to file
typedef typename itk::TransformFileWriterTemplate<ParametersValueType> TransformWriterType;
typename TransformWriterType::Pointer transformWriter = TransformWriterType::New();
transformWriter->SetFileName( fileName );
transformWriter->AddTransform( transform );
TRY_EXPECT_NO_EXCEPTION( transformWriter->Update() );
// Read transform file
typedef typename itk::TransformFileReaderTemplate<ParametersValueType> TransformReaderType;
typename TransformReaderType::Pointer transformReader = TransformReaderType::New();
transformReader->SetFileName(fileName);
TRY_EXPECT_NO_EXCEPTION( transformReader->Update() );
// Compare read transform results with expected results
const typename TransformReaderType::TransformListType * list = transformReader->GetTransformList();
if ( list->size() != 1 )
{
std::cerr << "Failure: There should be only one transform in the file!" << std::endl;
return EXIT_FAILURE;
}
TransformType* readTransform = static_cast<TransformType*>(list->front().GetPointer());
sourceit = sourceLandmarks->GetPoints()->Begin();
targetit = targetLandmarks->GetPoints()->Begin();
sourceend = sourceLandmarks->GetPoints()->End();
while( sourceit != sourceend )
{
sourcePoint = sourceit.Value();
targetPoint = targetit.Value();
mappedPoint = readTransform->TransformPoint(sourcePoint);
std::cout << sourcePoint << " : " << targetPoint;
std::cout << " warps to: " << mappedPoint << std::endl;
if( mappedPoint.EuclideanDistanceTo( targetPoint ) > epsilon )
{
return EXIT_FAILURE;
}
++sourceit;
++targetit;
}
return EXIT_SUCCESS;
}
int itkThinPlateTransformWriteReadTest( int argc, char *argv[] )
{
if( argc != 2 )
{
std::cerr << "Usage: " << argv[0] << " outputDirectory" << std::endl;
return EXIT_FAILURE;
}
itksys::SystemTools::ChangeDirectory(argv[1]);
typedef itk::ElasticBodySplineKernelTransform<double, 2> EBSTransform2DType;
typedef itk::ElasticBodyReciprocalSplineKernelTransform<double, 2> EBRSTransform2DType;
typedef itk::ThinPlateSplineKernelTransform<double, 2> TPSTransform2DType;
typedef itk::ThinPlateR2LogRSplineKernelTransform<double, 2> TPR2LRSTransform2DType;
typedef itk::VolumeSplineKernelTransform<double, 2> VSTransform2DType;
// Registers all transforms that are tested
itk::TransformFactory<EBSTransform2DType>::RegisterTransform();
itk::TransformFactory<EBRSTransform2DType>::RegisterTransform();
itk::TransformFactory<TPSTransform2DType>::RegisterTransform();
itk::TransformFactory<TPR2LRSTransform2DType>::RegisterTransform();
itk::TransformFactory<VSTransform2DType>::RegisterTransform();
// Register transform IO used to save the transforms
itk::ObjectFactoryBase::RegisterFactory(itk::HDF5TransformIOFactory::New() );
// Run tests
int resultEBS = ReadWriteTest<EBSTransform2DType>("ElasticBodySplineKernelTransform_double_2.h5");
int resultEBRS = ReadWriteTest<EBRSTransform2DType>("ElasticBodyReciprocalSplineKernelTransform_double_2.h5");
int resultTPS = ReadWriteTest<TPSTransform2DType>("ThinPlateSplineKernelTransform_double_2.h5");
int resultTPR2 = ReadWriteTest<TPR2LRSTransform2DType>("ThinPlateR2LogRSplineKernelTransform_double_2.h5");
int resultVS = ReadWriteTest<VSTransform2DType>("VolumeSplineKernelTransform_double_2.h5");
// Check results
if( resultEBS != EXIT_SUCCESS
|| resultEBRS != EXIT_SUCCESS
|| resultTPS != EXIT_SUCCESS
|| resultTPR2 != EXIT_SUCCESS
|| resultVS != EXIT_SUCCESS
)
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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