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itkCurvatureNDAnisotropicDiffusionFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkCurvatureNDAnisotropicDiffusionFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2008-10-13 18:54:28 $
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 __itkCurvatureNDAnisotropicDiffusionFunction_h
00018 #define __itkCurvatureNDAnisotropicDiffusionFunction_h
00019 
00020 #include "itkScalarAnisotropicDiffusionFunction.h"
00021 #include "itkNeighborhoodAlgorithm.h"
00022 #include "itkNeighborhoodInnerProduct.h"
00023 #include "itkDerivativeOperator.h"
00024 
00025 namespace itk {
00026 
00071 template <class TImage>
00072 class ITK_EXPORT CurvatureNDAnisotropicDiffusionFunction :
00073     public ScalarAnisotropicDiffusionFunction<TImage>
00074 {
00075 public:
00076 
00078   typedef CurvatureNDAnisotropicDiffusionFunction    Self;
00079   typedef ScalarAnisotropicDiffusionFunction<TImage> Superclass;
00080   typedef SmartPointer<Self>                         Pointer;
00081   typedef SmartPointer<const Self>                   ConstPointer;
00082 
00084   itkNewMacro(Self);
00085 
00087   itkTypeMacro( CurvatureNDAnisotropicDiffusionFunction,
00088                 ScalarAnisotropicDiffusionFunction );
00089 
00091   typedef typename Superclass::ImageType        ImageType;
00092   typedef typename Superclass::PixelType        PixelType;
00093   typedef typename Superclass::TimeStepType     TimeStepType;
00094   typedef typename Superclass::RadiusType       RadiusType;
00095   typedef typename Superclass::NeighborhoodType NeighborhoodType;
00096   typedef typename Superclass::FloatOffsetType  FloatOffsetType;
00097 
00099   itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension);
00100 
00102   virtual PixelType ComputeUpdate(const NeighborhoodType &neighborhood,
00103                                   void *globalData,
00104                                   const FloatOffsetType& offset = FloatOffsetType(0.0)
00105     );
00106 
00108   virtual void InitializeIteration()
00109     {
00110     m_K = static_cast<PixelType>(this->GetAverageGradientMagnitudeSquared() *
00111                                  this->GetConductanceParameter() *
00112                                  this->GetConductanceParameter() * -2.0f);
00113     }
00114 
00115 protected:
00116   CurvatureNDAnisotropicDiffusionFunction();
00117   ~CurvatureNDAnisotropicDiffusionFunction() {}
00118   
00119 private:
00120   CurvatureNDAnisotropicDiffusionFunction(const Self&); //purposely not implemented
00121   void operator=(const Self&); //purposely not implemented
00122 
00124   NeighborhoodInnerProduct<ImageType> m_InnerProduct;
00125 
00127   std::slice  x_slice[ImageDimension];
00128   std::slice xa_slice[ImageDimension][ImageDimension];
00129   std::slice xd_slice[ImageDimension][ImageDimension];
00130 
00132   DerivativeOperator<PixelType, itkGetStaticConstMacro(ImageDimension)> dx_op;
00133 
00135   PixelType m_K;
00136 
00138   static double m_MIN_NORM;
00139 
00140   unsigned long m_Center;
00141   unsigned long m_Stride[ImageDimension];
00142 
00143 };
00144 
00145 
00146   
00147 }// end namespace itk
00148 
00149 #ifndef ITK_MANUAL_INSTANTIATION
00150 #include "itkCurvatureNDAnisotropicDiffusionFunction.txx"
00151 #endif
00152 
00153 #endif
00154 

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