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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.
*
*=========================================================================*/
#ifndef itkSymmetricForcesDemonsRegistrationFilter_hxx
#define itkSymmetricForcesDemonsRegistrationFilter_hxx
#include "itkSymmetricForcesDemonsRegistrationFilter.h"
namespace itk
{
/**
* Default constructor
*/
template< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::SymmetricForcesDemonsRegistrationFilter()
{
typename DemonsRegistrationFunctionType::Pointer drfp;
drfp = DemonsRegistrationFunctionType::New();
this->SetDifferenceFunction( static_cast< FiniteDifferenceFunctionType * >(
drfp.GetPointer() ) );
}
/*
* Set the function state values before each iteration
*/
template< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
void
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::InitializeIteration()
{
// update variables in the equation object
DemonsRegistrationFunctionType *f =
dynamic_cast< DemonsRegistrationFunctionType * >
( this->GetDifferenceFunction().GetPointer() );
if ( !f )
{
itkExceptionMacro(<< "FiniteDifferenceFunction not of type DemonsRegistrationFunctionType");
}
f->SetDisplacementField( this->GetDisplacementField() );
// call the superclass implementation
Superclass::InitializeIteration();
/*
* Smooth the deformation field
*/
if ( this->GetSmoothDisplacementField() )
{
this->SmoothDisplacementField();
}
}
/**
* Get the metric value from the difference function
*/
template< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
double
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::GetMetric() const
{
DemonsRegistrationFunctionType *drfp =
dynamic_cast< DemonsRegistrationFunctionType * >
( this->GetDifferenceFunction().GetPointer() );
if ( !drfp )
{
itkExceptionMacro(
<< "Could not cast difference function to SymmetricForcesDemonsRegistrationFunction");
}
return drfp->GetMetric();
}
/*
*
*/
template< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
double
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::GetIntensityDifferenceThreshold() const
{
DemonsRegistrationFunctionType *drfp =
dynamic_cast< DemonsRegistrationFunctionType * >
( this->GetDifferenceFunction().GetPointer() );
if ( !drfp )
{
itkExceptionMacro(
<< "Could not cast difference function to DemonsRegistrationFunction");
}
return drfp->GetIntensityDifferenceThreshold();
}
/*
*
*/
template< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
void
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::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< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
const double &
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::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< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
void
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::ApplyUpdate(const 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< typename TFixedImage, typename TMovingImage, typename TDisplacementField >
void
SymmetricForcesDemonsRegistrationFilter< TFixedImage, TMovingImage, TDisplacementField >
::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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