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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkDeformationFieldJacobianDeterminantFilter.txx
Language: C++
Date: $Date$
Version: $Revision$
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 __itkDeformationFieldJacobianDeterminantFilter_txx
#define __itkDeformationFieldJacobianDeterminantFilter_txx
#include "itkDeformationFieldJacobianDeterminantFilter.h"
#include "itkNeighborhoodAlgorithm.h"
#include "itkImageRegionIterator.h"
#include "itkZeroFluxNeumannBoundaryCondition.h"
#include "itkProgressReporter.h"
#include "itkVectorCastImageFilter.h"
#include "vnl/vnl_math.h"
namespace itk
{
template <typename TInputImage, typename TRealType, typename TOutputImage>
DeformationFieldJacobianDeterminantFilter<TInputImage, TRealType, TOutputImage>
::DeformationFieldJacobianDeterminantFilter()
{
}
template <typename TInputImage, typename TRealType, typename TOutputImage>
TRealType
DeformationFieldJacobianDeterminantFilter< TInputImage, TRealType, TOutputImage >
::EvaluateAtNeighborhood(const ConstNeighborhoodIteratorType &it) const
{
vnl_matrix_fixed<TRealType,ImageDimension,VectorDimension> J;
for (unsigned int i = 0; i < ImageDimension; ++i)
{
for (unsigned int j = 0; j < VectorDimension; ++j)
{
J[i][j] = this->m_HalfDerivativeWeights[i] * (it.GetNext(i)[j] - it.GetPrevious(i)[j]);
}
}
return vnl_det(J);
}
template <typename TInputImage, typename TRealType, typename TOutputImage>
void
DeformationFieldJacobianDeterminantFilter< TInputImage, TRealType, TOutputImage >
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
}
} // end namespace itk
#endif
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