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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSegmentationLevelSetFunction.txx,v $
Language: C++
Date: $Date: 2008-03-03 13:58:53 $
Version: $Revision: 1.13 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkSegmentationLevelSetFunction_txx_
#define __itkSegmentationLevelSetFunction_txx_
#include "itkSegmentationLevelSetFunction.h"
namespace itk {
template <class TImageType, class TFeatureImageType>
void SegmentationLevelSetFunction<TImageType, TFeatureImageType>
::SetSpeedImage( ImageType *s )
{
m_SpeedImage = s;
m_Interpolator->SetInputImage(m_SpeedImage);
}
template <class TImageType, class TFeatureImageType>
void SegmentationLevelSetFunction<TImageType, TFeatureImageType>
::SetAdvectionImage( VectorImageType *s )
{
m_AdvectionImage = s;
m_VectorInterpolator->SetInputImage(m_AdvectionImage);
}
template <class TImageType, class TFeatureImageType>
void SegmentationLevelSetFunction<TImageType, TFeatureImageType>
::ReverseExpansionDirection()
{
this->SetPropagationWeight( -1.0 * this->GetPropagationWeight() );
this->SetAdvectionWeight( -1.0 * this->GetAdvectionWeight() );
}
template <class TImageType, class TFeatureImageType>
void SegmentationLevelSetFunction<TImageType, TFeatureImageType>
::Initialize(const RadiusType &r)
{
Superclass::Initialize(r);
}
template <class TImageType, class 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 <class TImageType, class 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 <class TImageType, class TFeatureImageType>
typename SegmentationLevelSetFunction<TImageType, TFeatureImageType>::ScalarValueType
SegmentationLevelSetFunction<TImageType, TFeatureImageType>
::PropagationSpeed(const NeighborhoodType &neighborhood,
const FloatOffsetType &offset, GlobalDataStruct *) const
{
IndexType idx = neighborhood.GetIndex();
ContinuousIndexType cdx;
for (unsigned 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 <class TImageType, class TFeatureImageType>
typename SegmentationLevelSetFunction<TImageType, TFeatureImageType>::VectorType
SegmentationLevelSetFunction<TImageType, TFeatureImageType>
::AdvectionField(const NeighborhoodType &neighborhood,
const FloatOffsetType &offset, GlobalDataStruct *) const
{
IndexType idx = neighborhood.GetIndex();
ContinuousIndexType cdx;
for (unsigned i = 0; i < ImageDimension; ++i)
{
cdx[i] = static_cast<double>(idx[i]) - offset[i];
}
if ( m_VectorInterpolator->IsInsideBuffer(cdx) )
{
return ( m_VectorCast(m_VectorInterpolator->EvaluateAtContinuousIndex(cdx)));
}
//Just return the default else
return ( m_AdvectionImage->GetPixel(idx) );
}
} // end namespace itk
#endif
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