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itkDeformableMesh3DFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkDeformableMesh3DFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2004/08/07 17:20:40 $
00007   Version:   $Revision: 1.26 $
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 __itkDeformableMesh3DFilter_h
00018 #define __itkDeformableMesh3DFilter_h
00019 
00020 #include "itkMeshToMeshFilter.h"
00021 #include "vnl/vnl_matrix_fixed.h"
00022 #include "vnl/vnl_math.h"
00023 #include "itkMesh.h"
00024 #include "itkVector.h"
00025 #include "itkTriangleCell.h"
00026 #include "itkImage.h"
00027 #include "itkImageRegionIterator.h"
00028 #include <itkCovariantVector.h>
00029 
00030 namespace itk
00031 {
00032 
00050 template <class TInputMesh, class TOutputMesh>
00051 class ITK_EXPORT DeformableMesh3DFilter : public MeshToMeshFilter<TInputMesh, TOutputMesh>
00052 {
00053 public:
00055   typedef DeformableMesh3DFilter  Self;
00056 
00058   typedef MeshToMeshFilter<TInputMesh, TOutputMesh> Superclass;
00059 
00061   typedef SmartPointer<Self>  Pointer;
00062   typedef SmartPointer<const Self>  ConstPointer;
00063 
00065   itkNewMacro(Self);
00066 
00068   itkTypeMacro(DeformableMesh3DFilter,MeshToMeshFilter);
00069 
00071   typedef TInputMesh InputMeshType;
00072   typedef TOutputMesh OutputMeshType;
00073   typedef typename InputMeshType::PointsContainerPointer
00074   InputPointsContainerPointer;
00075   typedef typename InputMeshType::PointsContainer::Iterator
00076   InputPointsContainerIterator;
00077   typedef typename InputMeshType::PointDataContainerPointer
00078   InputPointDataContainerPointer;
00079   typedef typename InputMeshType::PointDataContainer::Iterator
00080   InputPointDataContainerIterator;
00081   typedef typename InputMeshType::CellsContainerPointer
00082   InputCellsContainerPointer;
00083   typedef typename InputMeshType::CellsContainer::Iterator
00084   InputCellsContainerIterator;
00085   typedef typename InputMeshType::CellDataContainerPointer
00086   InputCellDataContainerPointer;
00087   typedef typename InputMeshType::CellDataContainer::Iterator
00088   InputCellDataContainerIterator;
00089   typedef typename OutputMeshType::PointsContainerPointer
00090   OutputPointsContainerPointer;
00091   typedef typename OutputMeshType::CellsContainer
00092   OutputCellsContainer;
00093   typedef typename OutputMeshType::CellsContainerPointer
00094   OutputCellsContainerPointer;
00095   typedef typename OutputMeshType::PointsContainer::Iterator
00096   OutputPointsContainerIterator;
00097 
00099   typedef typename InputMeshType::CellType          CellType;
00100   typedef typename InputMeshType::CellTraits        CellTraits;
00101   typedef typename InputMeshType::PointType         InputPointType;
00102   typedef typename InputMeshType::PixelType         PixelType;
00103 
00105   typedef Image<unsigned char, 3>                      PotentialImageType;
00106   typedef ImageRegionIterator<PotentialImageType>      PotentialIterator;
00107   typedef CovariantVector<PixelType, 3>                GradientType;
00108   typedef Image<GradientType, 3>                       GradientImageType;
00109   typedef ImageRegionIterator<GradientImageType>       GradientIterator;
00110   typedef typename GradientImageType::SizeType         ImageSizeType;
00111   typedef typename GradientImageType::IndexType        ImageIndexType;
00112 
00113   typedef itk::CellInterface<PixelType, CellTraits>     TCellInterface;
00114   typedef itk::TriangleCell<TCellInterface>          TriCell;
00115 
00116   typedef CovariantVector<int, 3>                      int3DVector;
00117   typedef CovariantVector<double, 2>                   double2DVector;
00118   typedef CovariantVector<double, 3>                   double3DVector;
00119 
00120   /* Mesh pointer definition. */
00121   typedef typename InputMeshType::Pointer     InputMeshPointer;
00122   typedef typename OutputMeshType::Pointer    OutputMeshPointer;
00123   typedef typename GradientImageType::Pointer GradientImagePointer;
00124 
00125   /* Stiffness Matrix Type definition */
00126   typedef vnl_matrix_fixed<double, 4, 4>  StiffnessMatrixType;
00127   typedef StiffnessMatrixType * StiffnessMatrixRawPointer; 
00128 
00130   void SetStiffnessMatrix( StiffnessMatrixType *stiff, int i );
00131 
00133   itkSetMacro(Gradient, GradientImagePointer);
00134   itkGetMacro(Gradient, GradientImagePointer);
00136 
00137   itkSetMacro(StepThreshold, int);
00138   itkGetMacro(StepThreshold, int);
00139 
00140   itkSetMacro(Stiffness, double2DVector);
00141   itkGetMacro(Stiffness, double2DVector);
00142 
00143   itkSetMacro(TimeStep, double);
00144   itkGetMacro(TimeStep, double);
00145 
00146   itkSetMacro(Scale, double3DVector);
00147 
00148   itkSetMacro(PotentialMagnitude, PixelType);
00149   itkSetMacro(GradientMagnitude, PixelType);
00150   itkSetMacro(PotentialOn, unsigned short);
00151   itkSetMacro(ObjectLabel, unsigned char);
00152 
00153   itkGetMacro(Normals, InputMeshPointer);
00154 
00155 protected:
00156   DeformableMesh3DFilter();
00157   ~DeformableMesh3DFilter();
00158   DeformableMesh3DFilter(const Self&) {}
00159   void operator=(const Self&) {}
00160   void PrintSelf(std::ostream& os, Indent indent) const;
00161 
00162   virtual void GenerateData();
00163 
00164 private:
00166   InputMeshPointer  m_Forces; 
00167   InputMeshPointer  m_Normals;
00168   InputMeshPointer  m_Displacements;
00169   InputMeshPointer  m_Derives;
00170   InputMeshPointer  m_Locations;
00171 
00172   void Initialize();
00173   void SetDefaultStiffnessMatrix();
00174   void SetMeshStiffness();
00175   void Advance();     // update data for next iteration
00176   void ComputeDt();   // compute point positions
00177   void ComputeOutput();
00178   void GradientFit(); // fit the model with gradient information
00179   void ComputeNormals();
00180   void PotentialFit();
00181 
00183   StiffnessMatrixType         m_StiffnessMatrix[10];
00184   StiffnessMatrixRawPointer  *m_K;
00185 
00187   double2DVector    m_Stiffness;
00188 
00190   double3DVector    m_Scale;
00191 
00193   int       m_NumberOfNodes;
00194   int       m_NumberOfCells;
00195 
00197   int       m_ImageHeight;
00198   int       m_ImageDepth;
00199 
00201   unsigned short m_ModelXUpLimit;
00202   unsigned short m_ModelXDownLimit;
00203   unsigned short m_ModelYUpLimit;
00204   unsigned short m_ModelYDownLimit;
00205   unsigned short m_ModelZUpLimit;
00206   unsigned short m_ModelZDownLimit;
00207   unsigned short m_PotentialOn;
00208   unsigned char  m_ObjectLabel;
00209   PixelType      m_GradientMagnitude;
00210   PixelType      m_PotentialMagnitude;
00211 
00213   GradientImagePointer  m_Gradient; 
00214   PotentialImageType::Pointer m_Potential;  
00215 };
00216 
00217 } // end namespace itk
00218 
00219 #ifndef ITK_MANUAL_INSTANTIATION
00220 #include "itkDeformableMesh3DFilter.txx"
00221 #endif
00222 
00223 #endif
00224 

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