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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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 elxTranslationTransform_hxx
#define elxTranslationTransform_hxx
#include "elxTranslationTransform.h"
namespace elastix
{
/**
* ********************* Constructor ****************************
*/
template <class TElastix>
TranslationTransformElastix<TElastix>::TranslationTransformElastix()
{
this->SetCurrentTransform(this->m_TranslationTransform);
} // end Constructor
/*
* ******************* BeforeRegistration ***********************
*/
template <class TElastix>
void
TranslationTransformElastix<TElastix>::BeforeRegistration()
{
/** Give initial parameters to this->m_Registration.*/
this->InitializeTransform();
} // end BeforeRegistration()
/**
* ************************* InitializeTransform *********************
*/
template <class TElastix>
void
TranslationTransformElastix<TElastix>::InitializeTransform()
{
/** Set all parameters to zero (no translation). */
this->m_TranslationTransform->SetIdentity();
/** Check if user wants automatic transform initialization; false by default. */
bool automaticTransformInitialization = false;
bool tmpBool = false;
this->m_Configuration->ReadParameter(tmpBool, "AutomaticTransformInitialization", 0);
if (tmpBool && this->Superclass1::GetInitialTransform() == nullptr)
{
automaticTransformInitialization = true;
}
/**
* Run the itkTransformInitializer if:
* the user asked for AutomaticTransformInitialization
*/
if (automaticTransformInitialization)
{
/** Use the TransformInitializer to determine an initial translation */
TransformInitializerPointer transformInitializer = TransformInitializerType::New();
transformInitializer->SetFixedImage(this->m_Registration->GetAsITKBaseType()->GetFixedImage());
transformInitializer->SetMovingImage(this->m_Registration->GetAsITKBaseType()->GetMovingImage());
transformInitializer->SetFixedMask(this->GetElastix()->GetFixedMask());
transformInitializer->SetMovingMask(this->GetElastix()->GetMovingMask());
transformInitializer->SetTransform(this->m_TranslationTransform);
/** Select the method of initialization. Default: "GeometricalCenter". */
transformInitializer->GeometryOn();
std::string method = "GeometricalCenter";
this->m_Configuration->ReadParameter(method, "AutomaticTransformInitializationMethod", 0);
if (method == "CenterOfGravity")
{
transformInitializer->MomentsOn();
}
transformInitializer->InitializeTransform();
}
/** Set the initial parameters in this->m_Registration.*/
this->m_Registration->GetAsITKBaseType()->SetInitialTransformParameters(this->GetParameters());
/** Give feedback. */
// \todo: should perhaps also print fixed parameters
log::info(std::ostringstream{} << "Transform parameters are initialized as: " << this->GetParameters());
} // end InitializeTransform()
/**
* ************************* CustomizeTransformParameterMap ************************
*/
template <class TElastix>
auto
TranslationTransformElastix<TElastix>::CreateDerivedTransformParameterMap() const -> ParameterMapType
{
// This transform type has no specific extra parameters.
return {};
} // end CustomizeTransformParameterMap()
} // end namespace elastix
#endif // end #ifndef elxTranslationTransform_hxx
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