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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSymmetricForcesDemonsRegistrationFilter.txx,v $
Language: C++
Date: $Date: 2004-11-04 20:40:37 $
Version: $Revision: 1.6 $
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.
=========================================================================*/
#ifndef _itkSymmetricForcesDemonsRegistrationFilter_txx
#define _itkSymmetricForcesDemonsRegistrationFilter_txx
#include "itkSymmetricForcesDemonsRegistrationFilter.h"
namespace itk {
/*
* Default constructor
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::SymmetricForcesDemonsRegistrationFilter()
{
typename DemonsRegistrationFunctionType::Pointer drfp;
drfp = DemonsRegistrationFunctionType::New();
this->SetDifferenceFunction( static_cast<FiniteDifferenceFunctionType *>(
drfp.GetPointer() ) );
}
/*
* Set the function state values before each iteration
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
void
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::InitializeIteration()
{
// update variables in the equation object
DemonsRegistrationFunctionType *f =
dynamic_cast<DemonsRegistrationFunctionType *>
(this->GetDifferenceFunction().GetPointer());
if ( !f )
{
itkExceptionMacro(<<"FiniteDifferenceFunction not of type DemonsRegistrationFunctionType");
}
f->SetDeformationField( this->GetDeformationField() );
// call the superclass implementation
Superclass::InitializeIteration();
/*
* Smooth the deformation field
*/
if ( this->GetSmoothDeformationField() )
{
this->SmoothDeformationField();
}
}
/*
* Get the metric value from the difference function
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
double
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::GetMetric() const
{
DemonsRegistrationFunctionType *drfp =
dynamic_cast<DemonsRegistrationFunctionType *>
(this->GetDifferenceFunction().GetPointer());
if( !drfp )
{
itkExceptionMacro( <<
"Could not cast difference function to SymmetricForcesDemonsRegistrationFunction" );
}
return drfp->GetMetric();
}
/*
*
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
double
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::GetIntensityDifferenceThreshold() const
{
DemonsRegistrationFunctionType *drfp =
dynamic_cast<DemonsRegistrationFunctionType *>
(this->GetDifferenceFunction().GetPointer());
if( !drfp )
{
itkExceptionMacro( <<
"Could not cast difference function to DemonsRegistrationFunction" );
}
return drfp->GetIntensityDifferenceThreshold();
}
/*
*
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
void
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::SetIntensityDifferenceThreshold(double threshold)
{
DemonsRegistrationFunctionType *drfp =
dynamic_cast<DemonsRegistrationFunctionType *>
(this->GetDifferenceFunction().GetPointer());
if( !drfp )
{
itkExceptionMacro( <<
"Could not cast difference function to SymmetricDemonsRegistrationFunction" );
}
drfp->SetIntensityDifferenceThreshold(threshold);
}
/*
* Get the metric value from the difference function
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
const double &
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::GetRMSChange() const
{
DemonsRegistrationFunctionType *drfp =
dynamic_cast<DemonsRegistrationFunctionType *>
(this->GetDifferenceFunction().GetPointer());
if( !drfp )
{
itkExceptionMacro( <<
"Could not cast difference function to SymmetricForcesDemonsRegistrationFunction" );
}
return drfp->GetRMSChange();
}
/*
* Get the metric value from the difference function
*/
template <class TFixedImage, class TMovingImage, class TDeformationField>
void
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::ApplyUpdate(TimeStepType dt)
{
// If we smooth the update buffer before applying it, then the are
// approximating a viscuous problem as opposed to an elastic problem
if ( this->GetSmoothUpdateField() )
{
this->SmoothUpdateField();
}
this->Superclass::ApplyUpdate(dt);
DemonsRegistrationFunctionType *drfp =
dynamic_cast<DemonsRegistrationFunctionType *>
(this->GetDifferenceFunction().GetPointer());
if( !drfp )
{
itkExceptionMacro( <<
"Could not cast difference function to DemonsRegistrationFunction" );
}
this->SetRMSChange( drfp->GetRMSChange() );
}
template <class TFixedImage, class TMovingImage, class TDeformationField>
void
SymmetricForcesDemonsRegistrationFilter<TFixedImage,TMovingImage,TDeformationField>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf( os, indent );
os << indent << "Intensity difference threshold: " <<
this->GetIntensityDifferenceThreshold() << std::endl;
}
} // end namespace itk
#endif
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