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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 itkLabelMapToBinaryImageFilter_hxx
#define itkLabelMapToBinaryImageFilter_hxx
#include "itkNumericTraits.h"
#include "itkProgressReporter.h"
#include "itkImageRegionIterator.h"
#include "itkProgressTransformer.h"
namespace itk
{
template <typename TInputImage, typename TOutputImage>
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::LabelMapToBinaryImageFilter()
{
this->m_BackgroundValue = NumericTraits<OutputImagePixelType>::NonpositiveMin();
this->m_ForegroundValue = NumericTraits<OutputImagePixelType>::max();
this->DynamicMultiThreadingOn();
}
template <typename TInputImage, typename TOutputImage>
void
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::GenerateInputRequestedRegion()
{
// call the superclass' implementation of this method
Superclass::GenerateInputRequestedRegion();
// We need all the input.
InputImagePointer input = const_cast<InputImageType *>(this->GetInput());
if (input)
{
input->SetRequestedRegion(input->GetLargestPossibleRegion());
}
}
template <typename TInputImage, typename TOutputImage>
void
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::EnlargeOutputRequestedRegion(DataObject *)
{
this->GetOutput()->SetRequestedRegion(this->GetOutput()->GetLargestPossibleRegion());
}
template <typename TInputImage, typename TOutputImage>
void
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::GenerateData()
{
this->UpdateProgress(0.0f);
this->AllocateOutputs();
this->BeforeThreadedGenerateData();
this->UpdateProgress(0.05f);
ProgressTransformer pt(0.05f, 0.5f, this);
this->GetMultiThreader()->SetNumberOfWorkUnits(this->GetNumberOfWorkUnits());
this->GetMultiThreader()->template ParallelizeImageRegion<OutputImageDimension>(
this->GetOutput()->GetRequestedRegion(),
[this](const OutputImageRegionType & outputRegionForThread) {
this->DynamicThreadedGenerateData(outputRegionForThread);
},
pt.GetProcessObject());
ProgressTransformer pt2(0.5f, 0.99f, this);
// delegate to the superclass implementation to use the thread support for the label objects
this->GetMultiThreader()->template ParallelizeImageRegion<OutputImageDimension>(
this->GetOutput()->GetRequestedRegion(),
[this](const OutputImageRegionType & outputRegionForThread) { this->SuperclassDynamicTGD(outputRegionForThread); },
pt2.GetProcessObject());
this->AfterThreadedGenerateData();
this->UpdateProgress(1.0f);
}
template <typename TInputImage, typename TOutputImage>
void
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::DynamicThreadedGenerateData(
const OutputImageRegionType & outputRegionForThread)
{
OutputImageType * output = this->GetOutput();
// fill the output with background value - they will be overridden with the
// foreground value later, if there is some objects
if (this->GetNumberOfIndexedInputs() == 2)
{
// fill the background with the background values from the background image
ImageRegionConstIterator<OutputImageType> bgIt(this->GetBackgroundImage(), outputRegionForThread);
ImageRegionIterator<OutputImageType> oIt(output, outputRegionForThread);
bgIt.GoToBegin();
oIt.GoToBegin();
while (!oIt.IsAtEnd())
{
const OutputImagePixelType & bg = bgIt.Get();
if (bg != this->m_ForegroundValue)
{
oIt.Set(bg);
}
else
{
oIt.Set(this->m_BackgroundValue);
}
++oIt;
++bgIt;
}
}
else
{
// fill the background with the background value
ImageRegionIterator<OutputImageType> oIt(output, outputRegionForThread);
oIt.GoToBegin();
while (!oIt.IsAtEnd())
{
oIt.Set(this->m_BackgroundValue);
++oIt;
}
}
}
template <typename TInputImage, typename TOutputImage>
void
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::ThreadedProcessLabelObject(LabelObjectType * labelObject)
{
OutputImageType * output = this->GetOutput();
typename LabelObjectType::ConstIndexIterator it(labelObject);
while (!it.IsAtEnd())
{
output->SetPixel(it.GetIndex(), this->m_ForegroundValue);
++it;
}
}
template <typename TInputImage, typename TOutputImage>
void
LabelMapToBinaryImageFilter<TInputImage, TOutputImage>::PrintSelf(std::ostream & os, Indent indent) const
{
this->Superclass::PrintSelf(os, indent);
os << indent << "ForegroundValue: "
<< static_cast<typename NumericTraits<OutputImagePixelType>::PrintType>(this->m_ForegroundValue) << std::endl;
os << indent << "BackgroundValue: "
<< static_cast<typename NumericTraits<OutputImagePixelType>::PrintType>(this->m_BackgroundValue) << std::endl;
}
} // end namespace itk
#endif
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