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itkAnisotropicDiffusionFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkAnisotropicDiffusionFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2008-10-07 14:49:29 $
00007   Version:   $Revision: 1.19 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkAnisotropicDiffusionFunction_h
00018 #define __itkAnisotropicDiffusionFunction_h
00019 
00020 
00021 #include "itkFiniteDifferenceFunction.h"
00022 
00023 namespace itk {
00024 
00134 template <class TImage>
00135 class ITK_EXPORT AnisotropicDiffusionFunction :
00136     public FiniteDifferenceFunction<TImage>
00137 {
00138 public:
00139 
00141   typedef AnisotropicDiffusionFunction     Self;
00142   typedef FiniteDifferenceFunction<TImage> Superclass;
00143   typedef SmartPointer<Self>               Pointer;
00144   typedef SmartPointer<const Self>         ConstPointer;
00145 
00147   itkTypeMacro( AnisotropicDiffusionFunction, FiniteDifferenceFunction );
00148 
00150   typedef typename Superclass::ImageType        ImageType;
00151   typedef typename Superclass::PixelType        PixelType;
00152   typedef typename Superclass::PixelRealType    PixelrealType;
00153   typedef typename Superclass::RadiusType       RadiusType;
00154   typedef typename Superclass::NeighborhoodType NeighborhoodType;
00155   typedef typename Superclass::TimeStepType     TimeStepType;
00156   typedef typename Superclass::FloatOffsetType  FloatOffsetType;
00157 
00159   itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension);
00160 
00166   virtual void CalculateAverageGradientMagnitudeSquared(ImageType *) = 0;
00167 
00171   void SetTimeStep(const TimeStepType &t)
00172     {
00173     m_TimeStep = t;
00174     }
00175   const TimeStepType &GetTimeStep() const
00176     {
00177     return m_TimeStep;
00178     }
00180 
00182   void SetConductanceParameter(const double &c)
00183     {
00184     m_ConductanceParameter = c;
00185     }
00186   const double &GetConductanceParameter() const
00187     {
00188     return m_ConductanceParameter;
00189     }
00191 
00193   const double &GetAverageGradientMagnitudeSquared() const
00194     {
00195     return m_AverageGradientMagnitudeSquared;
00196     }
00197   void SetAverageGradientMagnitudeSquared(const double &c)
00198     {
00199     m_AverageGradientMagnitudeSquared = c;
00200     }
00202 
00205   virtual TimeStepType ComputeGlobalTimeStep(void *itkNotUsed(GlobalData)) const
00206     {
00207     return this->GetTimeStep();
00208     }
00209 
00212   virtual void *GetGlobalDataPointer() const
00213     {
00214     return 0;
00215     }
00216 
00218   virtual void ReleaseGlobalDataPointer(void *itkNotUsed(GlobalData)) const
00219     {
00220     /* do nothing */
00221     }
00222 
00223 protected:
00224   AnisotropicDiffusionFunction()
00225     {
00226     m_AverageGradientMagnitudeSquared = 0.0;
00227     m_ConductanceParameter     = 1.0;     // default value
00228     m_TimeStep                 = 0.125f;  // default value
00229     }
00230   ~AnisotropicDiffusionFunction() {}
00231 
00232   void PrintSelf(std::ostream& os, Indent indent) const
00233     {
00234     Superclass::PrintSelf(os,indent);
00235     os << indent << "TimeStep: " << m_TimeStep << std::endl;
00236     os << indent << "ConductanceParameter: " << m_ConductanceParameter <<
00237       std::endl;
00238     }
00239 
00240 private:
00241   AnisotropicDiffusionFunction(const Self&); //purposely not implemented
00242   void operator=(const Self&); //purposely not implemented
00243 
00244   double          m_AverageGradientMagnitudeSquared;
00245   double          m_ConductanceParameter;
00246   TimeStepType    m_TimeStep;
00247 };
00248 
00249 }// end namespace itk
00250 
00251 #endif
00252 

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