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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 itkSegmentationLevelSetFunction_hxx
#define itkSegmentationLevelSetFunction_hxx
namespace itk
{
template <typename TImageType, typename TFeatureImageType>
void
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::SetSpeedImage(ImageType * s)
{
m_SpeedImage = s;
m_Interpolator->SetInputImage(m_SpeedImage);
}
template <typename TImageType, typename TFeatureImageType>
void
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::SetAdvectionImage(VectorImageType * s)
{
m_AdvectionImage = s;
m_VectorInterpolator->SetInputImage(m_AdvectionImage);
}
template <typename TImageType, typename TFeatureImageType>
void
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::ReverseExpansionDirection()
{
this->SetPropagationWeight(-1.0 * this->GetPropagationWeight());
this->SetAdvectionWeight(-1.0 * this->GetAdvectionWeight());
}
template <typename TImageType, typename TFeatureImageType>
void
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::Initialize(const RadiusType & r)
{
Superclass::Initialize(r);
}
template <typename TImageType, typename TFeatureImageType>
void
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::AllocateSpeedImage()
{
m_SpeedImage->SetRequestedRegion(m_FeatureImage->GetRequestedRegion());
m_SpeedImage->SetBufferedRegion(m_FeatureImage->GetBufferedRegion());
m_SpeedImage->SetLargestPossibleRegion(m_FeatureImage->GetLargestPossibleRegion());
m_SpeedImage->Allocate();
m_Interpolator->SetInputImage(m_SpeedImage);
}
template <typename TImageType, typename TFeatureImageType>
void
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::AllocateAdvectionImage()
{
m_AdvectionImage->SetRequestedRegion(m_FeatureImage->GetRequestedRegion());
m_AdvectionImage->SetBufferedRegion(m_FeatureImage->GetBufferedRegion());
m_AdvectionImage->SetLargestPossibleRegion(m_FeatureImage->GetLargestPossibleRegion());
m_AdvectionImage->Allocate();
m_VectorInterpolator->SetInputImage(m_AdvectionImage);
}
template <typename TImageType, typename TFeatureImageType>
auto
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::PropagationSpeed(const NeighborhoodType & neighborhood,
const FloatOffsetType & offset,
GlobalDataStruct *) const
-> ScalarValueType
{
IndexType idx = neighborhood.GetIndex();
ContinuousIndexType cdx;
for (unsigned int i = 0; i < ImageDimension; ++i)
{
cdx[i] = static_cast<double>(idx[i]) - offset[i];
}
if (m_Interpolator->IsInsideBuffer(cdx))
{
return (static_cast<ScalarValueType>(m_Interpolator->EvaluateAtContinuousIndex(cdx)));
}
else
{
return (static_cast<ScalarValueType>(m_SpeedImage->GetPixel(idx)));
}
}
template <typename TImageType, typename TFeatureImageType>
auto
SegmentationLevelSetFunction<TImageType, TFeatureImageType>::AdvectionField(const NeighborhoodType & neighborhood,
const FloatOffsetType & offset,
GlobalDataStruct *) const -> VectorType
{
IndexType idx = neighborhood.GetIndex();
ContinuousIndexType cdx;
for (unsigned int i = 0; i < ImageDimension; ++i)
{
cdx[i] = static_cast<double>(idx[i]) - offset[i];
}
if (m_VectorInterpolator->IsInsideBuffer(cdx))
{
return (static_cast<VectorType>(m_VectorInterpolator->EvaluateAtContinuousIndex(cdx)));
}
// Just return the default else
return (m_AdvectionImage->GetPixel(idx));
}
} // end namespace itk
#endif
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