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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 itkLabelMapToAttributeImageFilter_hxx
#define itkLabelMapToAttributeImageFilter_hxx
#include "itkNumericTraits.h"
#include "itkProgressReporter.h"
#include "itkImageRegionConstIteratorWithIndex.h"
namespace itk
{
template <typename TInputImage, typename TOutputImage, typename TAttributeAccessor>
LabelMapToAttributeImageFilter<TInputImage, TOutputImage, TAttributeAccessor>::LabelMapToAttributeImageFilter()
{
m_BackgroundValue = NumericTraits<OutputImagePixelType>::NonpositiveMin();
}
template <typename TInputImage, typename TOutputImage, typename TAttributeAccessor>
void
LabelMapToAttributeImageFilter<TInputImage, TOutputImage, TAttributeAccessor>::GenerateInputRequestedRegion()
{
// call the superclass' implementation of this method
Superclass::GenerateInputRequestedRegion();
// We need all the input.
InputImagePointer input = const_cast<InputImageType *>(this->GetInput());
if (!input)
{
return;
}
input->SetRequestedRegion(input->GetLargestPossibleRegion());
}
template <typename TInputImage, typename TOutputImage, typename TAttributeAccessor>
void
LabelMapToAttributeImageFilter<TInputImage, TOutputImage, TAttributeAccessor>::EnlargeOutputRequestedRegion(
DataObject *)
{
this->GetOutput()->SetRequestedRegion(this->GetOutput()->GetLargestPossibleRegion());
}
template <typename TInputImage, typename TOutputImage, typename TAttributeAccessor>
void
LabelMapToAttributeImageFilter<TInputImage, TOutputImage, TAttributeAccessor>::GenerateData()
{
// Allocate the output
this->AllocateOutputs();
OutputImageType * output = this->GetOutput();
const InputImageType * input = this->GetInput();
ProgressReporter progress(this, 0, output->GetRequestedRegion().GetNumberOfPixels());
AttributeAccessorType accessor;
output->FillBuffer(m_BackgroundValue);
for (typename InputImageType::ConstIterator loit(input); !loit.IsAtEnd(); ++loit)
{
using LabelObjectType = typename InputImageType::LabelObjectType;
const LabelObjectType * labelObject = loit.GetLabelObject();
const AttributeValueType & attribute = accessor(labelObject);
typename LabelObjectType::ConstIndexIterator it(labelObject);
while (!it.IsAtEnd())
{
const IndexType idx = it.GetIndex();
output->SetPixel(idx, static_cast<OutputImagePixelType>(attribute));
++it;
progress.CompletedPixel();
}
}
}
template <typename TInputImage, typename TOutputImage, typename TAttributeAccessor>
void
LabelMapToAttributeImageFilter<TInputImage, TOutputImage, TAttributeAccessor>::PrintSelf(std::ostream & os,
Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent
<< "BackgroundValue: " << static_cast<typename NumericTraits<OutputImagePixelType>::PrintType>(m_BackgroundValue)
<< std::endl;
}
} // end namespace itk
#endif
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