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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 itkAttributeRelabelLabelMapFilter_hxx
#define itkAttributeRelabelLabelMapFilter_hxx
#include "itkAttributeRelabelLabelMapFilter.h"
#include "itkProgressReporter.h"
namespace itk {
template <typename TImage, typename TAttributeAccessor>
AttributeRelabelLabelMapFilter<TImage, TAttributeAccessor>
::AttributeRelabelLabelMapFilter()
{
m_ReverseOrdering = false;
}
template <typename TImage, typename TAttributeAccessor>
void
AttributeRelabelLabelMapFilter<TImage, TAttributeAccessor>
::GenerateData()
{
// Allocate the output
this->AllocateOutputs();
ImageType * output = this->GetOutput();
typedef typename std::vector< typename LabelObjectType::Pointer > VectorType;
ProgressReporter progress( this, 0, 2 * output->GetNumberOfLabelObjects() );
// get the label objects in a vector, so they can be sorted
VectorType labelObjects;
labelObjects.reserve( output->GetNumberOfLabelObjects() );
for( typename ImageType::Iterator it( output );
! it.IsAtEnd();
++it )
{
labelObjects.push_back( it.GetLabelObject() );
progress.CompletedPixel();
}
// instantiate the comparator and sort the vector
if( m_ReverseOrdering )
{
ReverseComparator comparator;
std::sort( labelObjects.begin(), labelObjects.end(), comparator );
}
else
{
Comparator comparator;
std::sort( labelObjects.begin(), labelObjects.end(), comparator );
}
// progress.CompletedPixel();
// and put back the objects in the map
output->ClearLabels();
unsigned int label = 0;
for( typename VectorType::const_iterator it = labelObjects.begin();
it != labelObjects.end();
it++ )
{
// avoid the background label if it is used
if( label == output->GetBackgroundValue() )
{
label++;
}
(*it)->SetLabel( label );
output->AddLabelObject( *it );
// go to the nex label
label++;
progress.CompletedPixel();
}
}
template <typename TImage, typename TAttributeAccessor>
void
AttributeRelabelLabelMapFilter<TImage, TAttributeAccessor>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "ReverseOrdering: " << m_ReverseOrdering << std::endl;
}
}// end namespace itk
#endif
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