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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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 _itkErodeMaskImageFilter_hxx
#define _itkErodeMaskImageFilter_hxx
#include "itkErodeMaskImageFilter.h"
#include "itkParabolicErodeImageFilter.h"
//#include "itkThresholdImageFilter.h"
namespace itk
{
/**
* ************* GenerateData *******************
*/
template <class TImage>
void
ErodeMaskImageFilter<TImage>::GenerateData()
{
/** Typedefs. */
// typedef itk::ThresholdImageFilter<InputImageType> ThresholdFilterType;
using ErodeFilterType = itk::ParabolicErodeImageFilter<InputImageType, OutputImageType>;
using RadiusType = typename ErodeFilterType::RadiusType;
using ScalarRealType = typename ErodeFilterType::ScalarRealType;
/** Get the correct radius. */
RadiusType radiusarray;
ScalarRealType radius = 0.0;
ScalarRealType schedule = 0.0;
for (unsigned int i = 0; i < InputImageDimension; ++i)
{
schedule = static_cast<ScalarRealType>(this->GetSchedule()[this->GetResolutionLevel()][i]);
if (!this->GetIsMovingMask())
{
radius = schedule + 1.0;
}
else
{
radius = 2.0 * schedule + 1.0;
}
// Very specific computation for the parabolic erosion filter:
radius = radius * radius / 2.0 + 1.0;
radiusarray.SetElement(i, radius);
}
/** Threshold the data first. Every voxel with intensity >= 1 is used.
// Not needed since IsInside of a mask checks for != 0.
auto threshold = ThresholdFilterType::New();
threshold->ThresholdAbove( itk::NumericTraits<InputPixelType>::OneValue() );
threshold->SetOutsideValue( itk::NumericTraits<InputPixelType>::OneValue() );
threshold->SetInput( this->GetInput() ); */
/** Create and run the erosion filter. */
auto erosion = ErodeFilterType::New();
erosion->SetUseImageSpacing(false);
erosion->SetScale(radiusarray);
// erosion->SetInput( threshold->GetOutput() );
erosion->SetInput(this->GetInput());
erosion->Update();
/** Graft the output of the mini-pipeline back onto the filter's output.
* this copies back the region ivars and meta-data.
*/
this->GraftOutput(erosion->GetOutput());
} // end GenerateData()
} // end namespace itk
#endif
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