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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkForwardDifferenceOperator.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:35 $ |
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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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#ifndef __itkForwardDifferenceOperator_h |
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#define __itkForwardDifferenceOperator_h |
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#include "itkNeighborhoodOperator.h" |
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#include "itkExceptionObject.h" |
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namespace itk { |
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/** |
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* \class ForwardDifferenceOperator |
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* \brief Operator whose inner product with a neighborhood returns |
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* a "half" derivative at the center of the neighborhood. |
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* |
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* ForwardDifferenceOperator uses forward differences |
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* i.e. F(x+1) - F(x) to calculate a "half" derivative useful, among |
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* other things, in solving differential equations. It is a directional |
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* NeighborhoodOperator that should be applied to a Neighborhood using the |
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* inner product. |
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* |
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* \ingroup Operators |
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*/ |
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template<class TPixel, unsigned int VDimension=2, |
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class TAllocator = NeighborhoodAllocator<TPixel> > |
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class ITK_EXPORT ForwardDifferenceOperator |
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**: public NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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{ |
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public: |
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/** Standard class typedefs. */ |
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typedef ForwardDifferenceOperator Self; |
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TDA |
typedef NeighborhoodOperator<TPixel, VDimension, TAllocator> Superclass; |
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typedef typename Superclass::PixelType PixelType; |
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/** Constructor. */ |
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ForwardDifferenceOperator() {} |
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/** Copy constructor */ |
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ForwardDifferenceOperator(const Self& other) |
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****: NeighborhoodOperator<TPixel, VDimension, TAllocator>(other) |
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**{ } |
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/** Assignment operator */ |
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Self &operator=(const Self& other) |
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**{ |
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Superclass::operator=(other); |
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return *this; |
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**} |
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protected: |
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/** Necessary to work around VC++ compiler bug. */ |
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typedef typename Superclass::CoefficientVector CoefficientVector; |
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/** Calculates operator coefficients. */ |
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CoefficientVector GenerateCoefficients(); |
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/** Arranges coefficients spatially in the memory buffer. */ |
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void Fill(const CoefficientVector &coeff) |
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{ this->FillCenteredDirectional(coeff); } |
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}; |
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} // namespace itk |
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#ifndef ITK_MANUAL_INSTANTIATION |
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#include "itkForwardDifferenceOperator.txx" |
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#endif |
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#endif |
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EOF |
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EOF,EML |
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