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itkDenseFiniteDifferenceImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkDenseFiniteDifferenceImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2003/09/10 14:29:05 $
00007   Version:   $Revision: 1.15 $
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 __itkDenseFiniteDifferenceImageFilter_h_
00018 #define __itkDenseFiniteDifferenceImageFilter_h_
00019 
00020 #include "itkFiniteDifferenceImageFilter.h"
00021 #include "itkMultiThreader.h"
00022 
00023 namespace itk {
00024 
00065 template <class TInputImage, class TOutputImage>
00066 class ITK_EXPORT DenseFiniteDifferenceImageFilter  
00067   : public FiniteDifferenceImageFilter<TInputImage, TOutputImage>
00068 {
00069 public:
00071   typedef DenseFiniteDifferenceImageFilter Self;
00072   typedef FiniteDifferenceImageFilter<TInputImage, TOutputImage> Superclass;
00073   typedef SmartPointer<Self>  Pointer;
00074   typedef SmartPointer<const Self>  ConstPointer;
00075   
00077   itkTypeMacro(DenseFiniteDifferenceImageFilter, ImageToImageFilter );
00078   
00080   typedef typename Superclass::InputImageType  InputImageType;
00081   typedef typename Superclass::OutputImageType OutputImageType;
00082   typedef typename Superclass::FiniteDifferenceFunctionType
00083    FiniteDifferenceFunctionType;
00084   
00087   itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension);
00088 
00091   typedef typename Superclass::PixelType PixelType;
00092 
00094   typedef typename Superclass::TimeStepType TimeStepType;
00095 
00097   typedef OutputImageType UpdateBufferType;
00098   
00099 protected:
00100   DenseFiniteDifferenceImageFilter()
00101     { m_UpdateBuffer = UpdateBufferType::New(); }
00102   ~DenseFiniteDifferenceImageFilter() {}
00103   void PrintSelf(std::ostream& os, Indent indent) const;
00104 
00108   virtual void CopyInputToOutput();
00109   
00110 private:
00111   DenseFiniteDifferenceImageFilter(const Self&); //purposely not implemented
00112   void operator=(const Self&); //purposely not implemented
00113 
00116   struct DenseFDThreadStruct
00117   {
00118     DenseFiniteDifferenceImageFilter *Filter;
00119     TimeStepType TimeStep;
00120     TimeStepType *TimeStepList;
00121     bool *ValidTimeStepList;
00122   };
00123   
00125   typedef typename UpdateBufferType::RegionType ThreadRegionType;
00126 
00129   virtual void AllocateUpdateBuffer();
00130   
00134   virtual void ApplyUpdate(TimeStepType dt);
00135 
00138   static ITK_THREAD_RETURN_TYPE ApplyUpdateThreaderCallback( void *arg );
00139   
00143   virtual TimeStepType CalculateChange();
00144 
00147   static ITK_THREAD_RETURN_TYPE CalculateChangeThreaderCallback( void *arg );
00148   
00155   //  virtual
00156   //  int SplitUpdateContainer(int i, int num, ThreadRegionType& splitRegion);
00157 
00162   virtual
00163   void ThreadedApplyUpdate(TimeStepType dt,
00164                            const ThreadRegionType &regionToProcess,
00165                            int threadId);
00166   // FOR ALL: iterator(output, splitRegion), iterator(update, splitRegion)
00167 
00172   virtual
00173   TimeStepType ThreadedCalculateChange(const ThreadRegionType &regionToProcess,
00174                                        int threadId);
00175   // FOR ALL : iterator(input, splitRegion), iterator(update, splitRegion)
00176 
00178   typename UpdateBufferType::Pointer m_UpdateBuffer;
00179 };
00180   
00181 
00182 }// end namespace itk
00183 
00184 #ifndef ITK_MANUAL_INSTANTIATION
00185 #include "itkDenseFiniteDifferenceImageFilter.txx"
00186 #endif
00187 
00188 #endif

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