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itkMixtureModelComponentBase.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkMixtureModelComponentBase.h,v $
00005   Language:  C++
00006   Date:      $Date: 2002/09/23 10:25:22 $
00007   Version:   $Revision: 1.5 $
00008 
00009   Copyright (c) 2002 Insight 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 __itkMixtureModelComponentBase_h
00018 #define __itkMixtureModelComponentBase_h
00019 
00020 #include <vnl/vnl_vector.h>
00021 #include <vnl/vnl_matrix.h>
00022 
00023 #include "itkArray.h"
00024 #include "itkObject.h"
00025 #include "itkMembershipFunctionBase.h"
00026 
00027 namespace itk{ 
00028 namespace Statistics{
00029   
00052 template< class TSample >
00053 class MixtureModelComponentBase :
00054     public Object
00055 {
00056 public:
00058   typedef MixtureModelComponentBase Self;
00059   typedef Object Superclass ;
00060   typedef SmartPointer<Self> Pointer;
00061 
00063   itkTypeMacro(MixtureModelComponentBase, Object);
00064   itkNewMacro(Self) ;
00065   
00066   typedef typename TSample::MeasurementVectorType MeasurementVectorType ;
00067 
00069   typedef MembershipFunctionBase< MeasurementVectorType >
00070   MembershipFunctionType ;
00071 
00073   typedef Array< double > WeightArrayType ;
00074 
00075   typedef Array< double > ParametersType ;
00076 
00078   virtual void SetSample(TSample* sample) ;
00079   
00081   TSample* GetSample() ;
00082 
00087   MembershipFunctionType* GetMembershipFunction() ;
00088 
00089   void SetMinimalParametersChange(double change)
00090   { m_MinimalParametersChange = change ; }
00091 
00092   double GetMinimalParametersChange()
00093   { return m_MinimalParametersChange ; }
00094 
00095   virtual void SetParameters(const ParametersType &parameters) ;
00096 
00097   virtual ParametersType GetFullParameters()
00098   { return m_Parameters ; }
00099 
00100 
00103   void AreParametersModified(bool flag) ;
00104 
00106   bool AreParametersModified() ;
00107 
00109   void SetWeight(int index, double value) ;
00110   
00112   double GetWeight(int index) ;
00113 
00115   double Evaluate(MeasurementVectorType& measurements) ;
00116 
00118   WeightArrayType* GetWeights() ;
00119 
00120   virtual void Update() ;
00121 
00122 protected:
00123   MixtureModelComponentBase() ;
00124   virtual ~MixtureModelComponentBase() ;
00125   void PrintSelf(std::ostream& os, Indent indent) const;
00126 
00128   void CreateWeightArray() ;
00130   void DeleteWeightArray() ;
00134   void SetMembershipFunction(MembershipFunctionType* function) ;
00135 
00136   virtual void GenerateData() ;
00137 
00138 private:
00140   TSample* m_Sample ;
00141 
00142   double m_MinimalParametersChange ;
00143 
00144   ParametersType m_Parameters ;
00146   MembershipFunctionType* m_MembershipFunction ;
00148   WeightArrayType* m_Weights ;
00150   bool m_ParametersModified ;
00151   
00152 } ; // end of class
00153     
00154 } // end of namespace Statistics 
00155 } // end of namespace itk 
00156 
00157 #ifndef ITK_MANUAL_INSTANTIATION
00158 #include "itkMixtureModelComponentBase.txx"
00159 #endif
00160 
00161 #endif
00162 

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