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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkThinPlateR2LogRSplineKernelTransform.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:48 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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DEF |
#ifndef _itkThinPlateR2LogRSplineKernelTransform_txx |
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DEF |
#define _itkThinPlateR2LogRSplineKernelTransform_txx |
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#include "itkThinPlateR2LogRSplineKernelTransform.h" |
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namespace itk |
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{ |
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template <class TScalarType, unsigned int NDimensions> |
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const typename ThinPlateR2LogRSplineKernelTransform<TScalarType, NDimensions>::GMatrixType & |
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ThinPlateR2LogRSplineKernelTransform<TScalarType, NDimensions>:: |
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ComputeG(const InputVectorType & x) const |
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{ |
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const TScalarType r = x.GetNorm(); |
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this->m_GMatrix.fill( NumericTraits< TScalarType >::Zero ); |
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const TScalarType R2logR = |
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****( r > 1e-8 )? r * r * log( r ) : NumericTraits<TScalarType>::Zero; |
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this->m_GMatrix.fill_diagonal( R2logR ); |
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return this->m_GMatrix; |
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} |
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template <class TScalarType, unsigned int NDimensions> |
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void |
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ThinPlateR2LogRSplineKernelTransform<TScalarType, NDimensions>:: |
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ComputeDeformationContribution( const InputPointType & thisPoint, |
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OutputPointType & result ) const |
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{ |
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unsigned long numberOfLandmarks = this->m_SourceLandmarks->GetNumberOfPoints(); |
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PointsIterator sp = this->m_SourceLandmarks->GetPoints()->Begin(); |
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for(unsigned int lnd=0; lnd < numberOfLandmarks; lnd++ ) |
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{ |
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InputVectorType position = thisPoint - sp->Value(); |
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const TScalarType r = position.GetNorm(); |
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const TScalarType R2logR = |
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******( r > 1e-8 )? r * r * log( r ) : NumericTraits<TScalarType>::Zero; |
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for(unsigned int odim=0; odim < NDimensions; odim++ ) |
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{ |
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result[ odim ] += R2logR * this->m_DMatrix(odim,lnd); |
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} |
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++sp; |
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} |
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} |
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} // namespace itk |
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#endif |
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