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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkAttributeOpeningLabelMapFilter_hxx
#define itkAttributeOpeningLabelMapFilter_hxx
#include "itkProgressReporter.h"
namespace itk
{
template <typename TImage, typename TAttributeAccessor>
AttributeOpeningLabelMapFilter<TImage, TAttributeAccessor>::AttributeOpeningLabelMapFilter()
{
m_Lambda = AttributeValueType{};
m_ReverseOrdering = false;
// create the output image for the removed objects
this->SetNumberOfRequiredOutputs(2);
this->SetNthOutput(1, static_cast<TImage *>(this->MakeOutput(1).GetPointer()));
}
template <typename TImage, typename TAttributeAccessor>
void
AttributeOpeningLabelMapFilter<TImage, TAttributeAccessor>::GenerateData()
{
// Allocate the output
this->AllocateOutputs();
ImageType * output = this->GetOutput();
ImageType * output2 = this->GetOutput(1);
// set the background value for the second output - this is not done in the superclasses
output2->SetBackgroundValue(output->GetBackgroundValue());
AttributeAccessorType accessor;
ProgressReporter progress(this, 0, output->GetNumberOfLabelObjects());
typename ImageType::Iterator it(output);
while (!it.IsAtEnd())
{
typename LabelObjectType::LabelType label = it.GetLabel();
LabelObjectType * labelObject = it.GetLabelObject();
if ((!m_ReverseOrdering && accessor(labelObject) < m_Lambda) ||
(m_ReverseOrdering && accessor(labelObject) > m_Lambda))
{
// must increment the iterator before removing the object to avoid invalidating the iterator
++it;
output2->AddLabelObject(labelObject);
output->RemoveLabel(label);
}
else
{
++it;
}
progress.CompletedPixel();
}
}
template <typename TImage, typename TAttributeAccessor>
void
AttributeOpeningLabelMapFilter<TImage, TAttributeAccessor>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "ReverseOrdering: " << m_ReverseOrdering << std::endl;
os << indent << "Lambda: " << static_cast<typename NumericTraits<AttributeValueType>::PrintType>(m_Lambda)
<< std::endl;
}
} // end namespace itk
#endif
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