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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.
*
*=========================================================================*/
#include "itkImageFileReader.h"
#include "itkTranslationTransform.h"
#include "itkNearestNeighborInterpolateImageFunction.h"
#include "itkMattesMutualInformationImageToImageMetric.h"
int itkOptMattesMutualInformationImageToImageMetricThreadsTest1( int argc, char* argv[] )
{
if( argc < 3 )
{
std::cerr << "Missing arguments" << std::endl;
std::cerr << "Usage " << std::endl;
std::cerr << argv[0] << " fixedImage movingImage [verbose(1/0)] [numberOfSamples]" << std::endl;
return EXIT_FAILURE;
}
std::cout << "OPTIMIZED ON" << std::endl;
const unsigned int maximumNumberOfThreads = itk::MultiThreader::GetGlobalMaximumNumberOfThreads();
const unsigned int defaultNumberOfThreads = itk::MultiThreader::GetGlobalDefaultNumberOfThreads();
std::cout << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" << std::endl;
std::cout << " Global Maximum Number of Threads " << maximumNumberOfThreads << std::endl;
std::cout << " Global Default Number of Threads " << defaultNumberOfThreads << std::endl;
std::cout << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" << std::endl;
std::cout << std::endl;
typedef unsigned char PixelType;
const unsigned int Dimension = 2;
typedef itk::Image< PixelType > ImageType;
typedef itk::ImageFileReader< ImageType > ImageReaderType;
ImageReaderType::Pointer fixedImageReader = ImageReaderType::New();
ImageReaderType::Pointer movingImageReader = ImageReaderType::New();
fixedImageReader->SetFileName( argv[1] );
movingImageReader->SetFileName( argv[2] );
bool verbose = false;
if( argc > 3 )
{
verbose = atoi( argv[3] );
}
try
{
fixedImageReader->Update();
movingImageReader->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
typedef itk::NearestNeighborInterpolateImageFunction< ImageType > InterpolatorType;
InterpolatorType::Pointer interpolator = InterpolatorType::New();
typedef itk::MattesMutualInformationImageToImageMetric< ImageType, ImageType > MetricType;
MetricType::Pointer metric = MetricType::New();
typedef itk::TranslationTransform< double, Dimension > TranformType;
TranformType::Pointer transform = TranformType::New();
unsigned int numberOfSamples = 100;
if( argc > 4 )
{
numberOfSamples = atoi( argv[4] );
}
metric->SetNumberOfFixedImageSamples( numberOfSamples );
metric->SetTransform( transform );
metric->SetInterpolator( interpolator );
metric->SetFixedImage( fixedImageReader->GetOutput() );
metric->SetMovingImage( movingImageReader->GetOutput() );
metric->SetFixedImageRegion( fixedImageReader->GetOutput()->GetBufferedRegion() );
MetricType::TransformParametersType displacement( Dimension );
displacement[0] = 17;
displacement[1] = 19;
typedef MetricType::MeasureType MeasureType;
typedef MetricType::DerivativeType DerivativeType;
MeasureType value_combined;
DerivativeType derivative_combined;
MeasureType value_separate;
DerivativeType derivative_separate;
std::vector< MeasureType > values;
std::vector< DerivativeType > derivatives;
// By now restrict the number of threads to test to the range 1 to 4.
const unsigned int maximumNumberOfThreadsToTest = defaultNumberOfThreads;
for( unsigned int numberOfThreads = 1; numberOfThreads < maximumNumberOfThreadsToTest; numberOfThreads++ )
{
try
{
metric->SetNumberOfThreads( numberOfThreads );
metric->ReinitializeSeed( 76926294 );
metric->Initialize();
value_separate = metric->GetValue( displacement );
metric->GetDerivative( displacement, derivative_separate );
metric->GetValueAndDerivative( displacement, value_combined, derivative_combined );
}
catch( itk::ExceptionObject & excep )
{
std::cerr << excep << std::endl;
return EXIT_FAILURE;
}
values.push_back( value_combined );
derivatives.push_back( derivative_combined );
if( verbose )
{
std::cout << numberOfThreads;
std::cout << " : " << value_combined;
std::cout << " : " << value_separate;
std::cout << " : " << derivative_combined;
std::cout << " : " << derivative_separate << std::endl;
std::cout << std::endl << std::endl;
}
}
bool testFailed = false;
const double tolerance = 1e-7;
for( unsigned int i = 0; i < values.size(); i++ )
{
for( unsigned int j = i; j < values.size(); j++ )
{
const double difference = values[i] - values[j];
if( itk::Math::abs( difference ) > tolerance )
{
if( verbose )
{
std::cerr << i+1 << "thread vs. " << j+1;
std::cerr << " thread differ by " << difference;
std::cerr << " from " << values[i];
std::cerr << " to " << values[j];
std::cerr << " ## Derivatives " << derivatives[i] << " vs. " << derivatives[j];
std::cerr << std::endl;
}
testFailed = true;
}
}
}
if( testFailed )
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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