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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 elxGradientDifferenceMetric_hxx
#define elxGradientDifferenceMetric_hxx
#include "elxGradientDifferenceMetric.h"
#include "itkTimeProbe.h"
namespace elastix
{
/**
* ******************* Initialize ***********************
*/
template <class TElastix>
void
GradientDifferenceMetric<TElastix>::Initialize()
{
itk::TimeProbe timer;
timer.Start();
this->Superclass1::Initialize();
timer.Stop();
log::info(std::ostringstream{} << "Initialization of GradientDifference metric took: "
<< static_cast<long>(timer.GetMean() * 1000) << " ms.");
} // end Initialize()
/**
* ***************** BeforeRegistration ***********************
*/
template <class TElastix>
void
GradientDifferenceMetric<TElastix>::BeforeRegistration()
{
if constexpr (TElastix::FixedDimension != 3)
{
itkExceptionMacro("FixedImage must be 3D");
}
if constexpr (TElastix::FixedDimension == 3)
{
if (this->m_Elastix->GetFixedImage()->GetLargestPossibleRegion().GetSize()[2] != 1)
{
itkExceptionMacro("Metric can only be used for 2D-3D registration. FixedImageSize[2] must be 1");
}
}
} // end BeforeRegistration()
/**
* ***************** BeforeEachResolution ***********************
*/
template <class TElastix>
void
GradientDifferenceMetric<TElastix>::BeforeEachResolution()
{
this->SetScales(this->m_Elastix->GetElxOptimizerBase()->GetAsITKBaseType()->GetScales());
} // end BeforeEachResolution()
} // end namespace elastix
#endif // end #ifndef elxGradientDifferenceMetric_hxx
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