cxLandmarkTranslationRegistration.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/
#include "cxLandmarkTranslationRegistration.h"
 
/*=========================================================================
 
 Program:   Insight Segmentation & Registration Toolkit
 Module:    $RCSfile: IterativeClosestPoint1.cxx,v $
 Language:  C++
 Date:      $Date: 2009-12-04 03:25:22 $
 Version:   $Revision: 1.7 $
 
 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.
 
 =========================================================================*/
#ifdef _MSC_VER
#pragma warning ( disable : 4786 )
#endif
 
// Software Guide : BeginLatex
//
// This example illustrates how to perform Iterative Closest Point (ICP)
// registration in ITK. The main class featured in this section is the
// \doxygen{EuclideanDistancePointMetric}.
//
// Software Guide : EndLatex
 
// Software Guide : BeginCodeSnippet
#include "itkTranslationTransform.h"
#include "itkEuclideanDistancePointMetric.h"
#include "itkLevenbergMarquardtOptimizer.h"
#include "itkPointSet.h"
#include "itkPointSetToPointSetRegistrationMethod.h"
// Software Guide : EndCodeSnippet
 
#include <iostream>
#include <fstream>
 
class CommandIterationUpdate: public itk::Command
{
public:
        typedef CommandIterationUpdate Self;
        typedef itk::Command Superclass;
        typedef itk::SmartPointer<Self> Pointer;
        itkNewMacro( Self );
 
protected:
        CommandIterationUpdate() {}
 
public:
        typedef itk::LevenbergMarquardtOptimizer OptimizerType;
        typedef const OptimizerType * OptimizerPointer;
 
        void Execute(itk::Object *caller, const itk::EventObject & event)
        {
                Execute((const itk::Object *) caller, event);
        }
 
        void Execute(const itk::Object * object, const itk::EventObject & event)
        {
                OptimizerPointer optimizer = dynamic_cast<OptimizerPointer>(object);
 
                if (!itk::IterationEvent().CheckEvent(&event))
                {
                        return;
                }
 
                std::cout << "iteration Value = " << optimizer->GetCachedValue() << std::endl;
                std::cout << "iteration Position = " << optimizer->GetCachedCurrentPosition();
                std::cout << std::endl << std::endl;
 
        }
 
};
 
class LandmarkTranslation
{
public:
        static const unsigned int Dimension = 3;
 
        typedef itk::PointSet<float, Dimension> PointSetType;
 
//  PointSetType::Pointer fixedPointSet  = PointSetType::New();
//  PointSetType::Pointer movingPointSet = PointSetType::New();
 
        typedef PointSetType::PointType PointType;
        typedef PointSetType::PointsContainer PointsContainer;
 
        //-----------------------------------------------------------
        // Set up  the Metric
        //-----------------------------------------------------------
        typedef itk::EuclideanDistancePointMetric<PointSetType, PointSetType> MetricType;
 
        typedef MetricType::TransformType TransformBaseType;
        typedef TransformBaseType::ParametersType ParametersType;
        typedef TransformBaseType::JacobianType JacobianType;
 
        //-----------------------------------------------------------
        // Set up a Transform
        //-----------------------------------------------------------
 
        typedef itk::TranslationTransform<double, Dimension> TransformType;
 
        // Optimizer Type
        typedef itk::LevenbergMarquardtOptimizer OptimizerType;
 
        // Registration Method
        typedef itk::PointSetToPointSetRegistrationMethod<PointSetType, PointSetType> RegistrationType;
 
        // methods:
        cx::Transform3D mResult; 
 
        bool registerPoints(std::vector<cx::Vector3D> ref, std::vector<cx::Vector3D> target);
        bool registerPoints(PointSetType::Pointer fixedPointSet, PointSetType::Pointer movingPointSet);
        PointSetType::Pointer toItk(std::vector<cx::Vector3D> input);
        int test();
 
};
 
LandmarkTranslation::PointSetType::Pointer LandmarkTranslation::toItk(std::vector<cx::Vector3D> input)
{
        PointSetType::Pointer pointSet = PointSetType::New();
        PointsContainer::Pointer pointContainer = PointsContainer::New();
        PointType point;
 
        for (unsigned i = 0; i < input.size(); ++i)
        {
                point[0] = input[i][0];
                point[1] = input[i][1];
                point[2] = input[i][2];
                pointContainer->InsertElement(i, point);
        }
        pointSet->SetPoints(pointContainer);
        return pointSet;
}
 
bool LandmarkTranslation::registerPoints(std::vector<cx::Vector3D> ref, std::vector<cx::Vector3D> target)
{
        return registerPoints(toItk(ref), toItk(target));
}
 
bool LandmarkTranslation::registerPoints(PointSetType::Pointer fixedPointSet, PointSetType::Pointer movingPointSet)
{
 
//-----------------------------------------------------------
// Set up  the Metric
//-----------------------------------------------------------
        MetricType::Pointer metric = MetricType::New();
 
//-----------------------------------------------------------
// Set up a Transform
//-----------------------------------------------------------
 
        TransformType::Pointer transform = TransformType::New();
 
        // Optimizer Type
        OptimizerType::Pointer optimizer = OptimizerType::New();
        optimizer->SetUseCostFunctionGradient(false);
 
        // Registration Method
        RegistrationType::Pointer registration = RegistrationType::New();
 
        // Scale the translation components of the Transform in the Optimizer
        OptimizerType::ScalesType scales(transform->GetNumberOfParameters());
        std::cout << "transform->GetNumberOfParameters() " << transform->GetNumberOfParameters() << std::endl;
        scales.Fill(0.01);
 
        unsigned long numberOfIterations = 100;
        double gradientTolerance = 1e-5; // convergence criterion
        double valueTolerance = 1e-5; // convergence criterion
        double epsilonFunction = 1e-6; // convergence criterion
 
        optimizer->SetScales(scales);
        optimizer->SetNumberOfIterations(numberOfIterations);
        optimizer->SetValueTolerance(valueTolerance);
        optimizer->SetGradientTolerance(gradientTolerance);
        optimizer->SetEpsilonFunction(epsilonFunction);
 
        // Start from an Identity transform (in a normal case, the user
        // can probably provide a better guess than the identity...
        transform->SetIdentity();
 
        registration->SetInitialTransformParameters(transform->GetParameters());
 
        //------------------------------------------------------
        // Connect all the components required for Registration
        //------------------------------------------------------
        registration->SetMetric(metric);
        registration->SetOptimizer(optimizer);
        registration->SetTransform(transform);
        registration->SetFixedPointSet(fixedPointSet);
        registration->SetMovingPointSet(movingPointSet);
 
//  // Connect an observer
//  CommandIterationUpdate::Pointer observer = CommandIterationUpdate::New();
//  optimizer->AddObserver( itk::IterationEvent(), observer );
 
        try
        {
//              registration->StartRegistration();
                registration->Update();
        } catch (itk::ExceptionObject & e)
        {
                std::cout << e << std::endl;
                return false;
        }
 
        mResult = cx::Transform3D::Identity();
        for (unsigned i = 0; i < transform->GetNumberOfParameters(); ++i)
                mResult(i, 3) = transform->GetParameters()[i];
 
        //std::cout << "Solution = " << transform->GetParameters() << "\n" << mResult << std::endl;
        //std::cout << "Solution = " << registration->GetLastTransformParameters() << std::endl;
 
        return true;
 
}
 
namespace cx
{
 
Transform3D LandmarkTranslationRegistration::registerPoints(std::vector<Vector3D> ref,
                                std::vector<Vector3D> target, bool* ok)
{
        if (ref.size() != target.size() || ref.empty())
        {
                std::cout << "Different sizes in ref and target: aborting registration." << std::endl;
                *ok = false;
                return Transform3D::Identity();
        }
 
        // ad-hoc solution for one and two points: itk doesn't handle this for some reason.
        if (ref.size() == 1)
        {
                Vector3D t = ref[0] - target[0];
                *ok = true;
                return createTransformTranslate(t);
        }
        if (ref.size() == 2)
        {
                Vector3D rr = (ref[0] + ref[1]) / 2.0;
                Vector3D tt = (target[0] + target[1]) / 2.0;
                Vector3D t = rr - tt;
                *ok = true;
                return createTransformTranslate(t);
        }
 
        LandmarkTranslation registrator;
        *ok = registrator.registerPoints(ref, target);
        return registrator.mResult;
}
 
} // namespace cx