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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: 2008-01-18 20:07:32 $
00007   Version:   $Revision: 1.18 $
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   { m_TimeStep = t; }
00173   const TimeStepType &GetTimeStep() const
00174   { return m_TimeStep; }
00176 
00178   void SetConductanceParameter(const double &c)
00179   { m_ConductanceParameter = c; }
00180   const double &GetConductanceParameter() const
00181   { return m_ConductanceParameter; }
00183 
00185   const double &GetAverageGradientMagnitudeSquared() const
00186   { return m_AverageGradientMagnitudeSquared;  }
00187   void SetAverageGradientMagnitudeSquared(const double &c)
00188   { m_AverageGradientMagnitudeSquared = c; }
00190 
00193   virtual TimeStepType ComputeGlobalTimeStep(void *itkNotUsed(GlobalData)) const
00194   { return this->GetTimeStep(); }
00195 
00198   virtual void *GetGlobalDataPointer() const
00199   {  return 0; }
00200 
00202   virtual void ReleaseGlobalDataPointer(void *itkNotUsed(GlobalData)) const
00203   { /* do nothing */ }
00204 
00205 protected:
00206   AnisotropicDiffusionFunction()
00207   {
00208     m_AverageGradientMagnitudeSquared = 0.0;
00209     m_ConductanceParameter     = 1.0;     // default value
00210     m_TimeStep                 = 0.125f;  // default value
00211   }
00212   ~AnisotropicDiffusionFunction() {}
00213 
00214   void PrintSelf(std::ostream& os, Indent indent) const
00215   {
00216     Superclass::PrintSelf(os,indent);
00217     os << indent << "TimeStep: " << m_TimeStep << std::endl;
00218     os << indent << "ConductanceParameter: " << m_ConductanceParameter <<
00219       std::endl;
00220   }
00221 
00222 private:
00223   AnisotropicDiffusionFunction(const Self&); //purposely not implemented
00224   void operator=(const Self&); //purposely not implemented
00225 
00226   double m_AverageGradientMagnitudeSquared;
00227   double m_ConductanceParameter;
00228   TimeStepType    m_TimeStep;
00229 };
00230 
00231 }// end namespace itk
00232 
00233 #endif
00234 

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