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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkInPlaceLabelMapFilter.txx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
Portions of this code are covered under the VTK copyright.
See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 __itkInPlaceLabelMapFilter_txx
#define __itkInPlaceLabelMapFilter_txx
#include "itkInPlaceLabelMapFilter.h"
namespace itk
{
/**
*
*/
template <class TInputImage>
InPlaceLabelMapFilter<TInputImage>
::InPlaceLabelMapFilter() : m_InPlace(true)
{
}
/**
*
*/
template <class TInputImage>
InPlaceLabelMapFilter<TInputImage>
::~InPlaceLabelMapFilter()
{
}
template<class TInputImage>
void
InPlaceLabelMapFilter<TInputImage>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "InPlace: " << (this->m_InPlace ? "On" : "Off") << std::endl;
if ( this->CanRunInPlace())
{
os << indent << "The input and output to this filter are the same type. The filter can be run in place." << std::endl;
}
else
{
os << indent << "The input and output to this filter are different types. The filter cannot be run in place." << std::endl;
}
}
template<class TInputImage>
void
InPlaceLabelMapFilter<TInputImage>
::AllocateOutputs()
{
// if told to run in place and the types support it,
if( this->m_InPlace && this->CanRunInPlace() )
{
// Graft this first input to the output. Later, we'll need to
// remove the input's hold on the bulk data.
//
OutputImagePointer inputAsOutput = dynamic_cast<TOutputImage *>(const_cast<TInputImage *>(this->GetInput()));
if( inputAsOutput )
{
// save the largest possible region to restore it after the graft output.
// the largest possible region is not that important with LabelMap and
// can be managed by the filter, even when running inplace
RegionType region = this->GetOutput()->GetLargestPossibleRegion();
this->GraftOutput( inputAsOutput );
this->GetOutput()->SetRegions( region );
}
// If there are more than one outputs, allocate the remaining outputs
for (unsigned int i=1; i < this->GetNumberOfOutputs(); i++)
{
OutputImagePointer outputPtr;
outputPtr = this->GetOutput(i);
outputPtr->SetBufferedRegion(outputPtr->GetRequestedRegion());
outputPtr->Allocate();
}
}
else
{
Superclass::AllocateOutputs();
// copy the content of the input image to the output image
const TInputImage * input = this->GetInput();
TOutputImage * output = this->GetOutput();
assert( input != NULL );
assert( output != NULL );
output->SetBackgroundValue( input->GetBackgroundValue() );
const LabelObjectContainerType & labelObjectContainer = input->GetLabelObjectContainer();
LabelObjectContainerConstIterator it = labelObjectContainer.begin();
while( it != labelObjectContainer.end() )
{
const LabelObjectType * labeObject = it->second;
assert( labeObject != NULL );
assert( labeObject->GetLabel() == it->first );
typename LabelObjectType::Pointer newLabelObject = LabelObjectType::New();
newLabelObject->CopyAllFrom( labeObject );
output->AddLabelObject( newLabelObject );
it++;
}
}
}
template<class TInputImage>
void
InPlaceLabelMapFilter<TInputImage>
::ReleaseInputs()
{
// if told to run in place and the types support it,
if( this->m_InPlace && (typeid(TInputImage) == typeid(TOutputImage)) )
{
// Release any input where the ReleaseData flag has been set
ProcessObject::ReleaseInputs();
// Release input 0 by default since we overwrote it
TInputImage * ptr = const_cast<TInputImage*>( this->GetInput() );
if( ptr )
{
ptr->ReleaseData();
}
}
else
{
Superclass::ReleaseInputs();
}
}
} // end namespace itk
#endif
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