/usr/include/ITK-4.5/itkLevelSetEvolutionUpdateLevelSetsThreader.hxx is in libinsighttoolkit4-dev 4.5.0-3.
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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
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*
*=========================================================================*/
#ifndef __itkLevelSetEvolutionUpdateLevelSetsThreader_hxx
#define __itkLevelSetEvolutionUpdateLevelSetsThreader_hxx
#include "itkLevelSetEvolutionUpdateLevelSetsThreader.h"
#include "itkImageRegionIterator.h"
namespace itk
{
template< typename TImage, typename TLevelSetEvolution >
LevelSetEvolutionUpdateLevelSetsThreader< LevelSetDenseImage< TImage >, ThreadedImageRegionPartitioner< TImage::ImageDimension >, TLevelSetEvolution >
::LevelSetEvolutionUpdateLevelSetsThreader()
{
}
template< typename TImage, typename TLevelSetEvolution >
void
LevelSetEvolutionUpdateLevelSetsThreader< LevelSetDenseImage< TImage >, ThreadedImageRegionPartitioner< TImage::ImageDimension >, TLevelSetEvolution >
::BeforeThreadedExecution()
{
this->m_RMSChangeAccumulatorPerThread.resize( this->GetNumberOfThreadsUsed() );
for( ThreadIdType ii = 0; ii < this->GetNumberOfThreadsUsed(); ++ii )
{
this->m_RMSChangeAccumulatorPerThread[ii].ResetToZero();
}
}
template< typename TImage, typename TLevelSetEvolution >
void
LevelSetEvolutionUpdateLevelSetsThreader< LevelSetDenseImage< TImage >, ThreadedImageRegionPartitioner< TImage::ImageDimension >, TLevelSetEvolution >
::ThreadedExecution( const DomainType & imageSubRegion,
const ThreadIdType threadId )
{
typename LevelSetContainerType::Iterator levelSetContainerIt = this->m_Associate->m_LevelSetContainerIteratorToProcessWhenThreading;
typename LevelSetContainerType::ConstIterator levelSetUpdateContainerIt = this->m_Associate->m_LevelSetUpdateContainerIteratorToProcessWhenThreading;
// This is for single level set analysis, so we only process the first level
// set.
typename LevelSetType::Pointer levelSet = levelSetContainerIt->GetLevelSet();
typename LevelSetType::Pointer levelSetUpdate = levelSetUpdateContainerIt->GetLevelSet();
typename LevelSetImageType::Pointer levelSetImage = levelSet->GetModifiableImage();
typename LevelSetImageType::ConstPointer levelSetUpdateImage = levelSetUpdate->GetImage();
ImageRegionIterator< LevelSetImageType > levelSetImageIt( levelSetImage, imageSubRegion );
ImageRegionConstIterator< LevelSetImageType > levelSetUpdateImageIt( levelSetUpdateImage, imageSubRegion );
levelSetImageIt.GoToBegin();
levelSetUpdateImageIt.GoToBegin();
LevelSetOutputRealType p;
while( !levelSetImageIt.IsAtEnd() )
{
p = this->m_Associate->m_Dt * levelSetUpdateImageIt.Get();
levelSetImageIt.Set( levelSetImageIt.Get() + p );
this->m_RMSChangeAccumulatorPerThread[threadId] += p*p;
++levelSetImageIt;
++levelSetUpdateImageIt;
}
}
template< typename TImage, typename TLevelSetEvolution >
void
LevelSetEvolutionUpdateLevelSetsThreader< LevelSetDenseImage< TImage >, ThreadedImageRegionPartitioner< TImage::ImageDimension >, TLevelSetEvolution >
::AfterThreadedExecution()
{
for( ThreadIdType ii = 0; ii < this->GetNumberOfThreadsUsed(); ++ii )
{
this->m_Associate->m_RMSChangeAccumulator += this->m_RMSChangeAccumulatorPerThread[ii].GetSum();
}
}
} // end namespace itk
#endif
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