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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkOptMattesMutualInformationImageToImageMetricThreadsTest1.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.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;
}
#ifdef ITK_USE_OPTIMIZED_REGISTRATION_METHODS
std::cout << "OPTIMIZED ON" << std::endl;
#else
std::cout << "OPTIMIZED OFF" << std::endl;
#endif
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();
#ifdef ITK_USE_OPTIMIZED_REGISTRATION_METHODS
unsigned int numberOfSamples = 100;
if( argc > 4 )
{
numberOfSamples = atoi( argv[4] );
}
metric->SetNumberOfFixedImageSamples( numberOfSamples );
#endif
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;
DerivativeType derivative;
MeasureType value1;
DerivativeType derivative1;
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 = 5;
for( unsigned int numberOfThreads = 1; numberOfThreads < maximumNumberOfThreadsToTest; numberOfThreads++ )
{
try
{
#ifdef ITK_USE_OPTIMIZED_REGISTRATION_METHODS
metric->SetNumberOfThreads( numberOfThreads );
#endif
metric->ReinitializeSeed( 76926294 );
metric->Initialize();
metric->GetValueAndDerivative( displacement, value, derivative );
value1 = metric->GetValue( displacement );
metric->GetDerivative( displacement, derivative1 );
}
catch( itk::ExceptionObject & excep )
{
std::cerr << excep << std::endl;
return EXIT_FAILURE;
}
values.push_back( value );
derivatives.push_back( derivative );
if( verbose )
{
std::cout << numberOfThreads;
std::cout << " : " << value;
std::cout << " : " << value1;
std::cout << " : " << derivative;
std::cout << " : " << derivative1 << 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( vnl_math_abs( difference ) > tolerance )
{
if( verbose )
{
std::cerr << i << " : " << j;
std::cerr << " Differ by " << difference;
std::cerr << " from " << values[i];
std::cerr << " to " << values[j];
std::cerr << std::endl;
}
testFailed = true;
}
}
}
if( testFailed )
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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