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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.
*
*=========================================================================*/
/*=========================================================================
*
* Portions of this file are subject to the VTK Toolkit Version 3 copyright.
*
* Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
*
* For complete copyright, license and disclaimer of warranty information
* please refer to the NOTICE file at the top of the ITK source tree.
*
*=========================================================================*/
#ifndef itkInPlaceLabelMapFilter_hxx
#define itkInPlaceLabelMapFilter_hxx
namespace itk
{
template <typename 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 <typename 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 = 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->GetNumberOfIndexedOutputs(); ++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();
itkAssertInDebugAndIgnoreInReleaseMacro(input != nullptr);
itkAssertInDebugAndIgnoreInReleaseMacro(output != nullptr);
output->SetBackgroundValue(input->GetBackgroundValue());
typename TInputImage::ConstIterator it(input);
while (!it.IsAtEnd())
{
const LabelObjectType * labelObject = it.GetLabelObject();
itkAssertInDebugAndIgnoreInReleaseMacro(labelObject != nullptr);
itkAssertInDebugAndIgnoreInReleaseMacro(labelObject->GetLabel() == it.GetLabel());
auto newLabelObject = LabelObjectType::New();
newLabelObject->template CopyAllFrom<LabelObjectType>(labelObject);
output->AddLabelObject(newLabelObject);
++it;
}
}
}
} // end namespace itk
#endif
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