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itkCovarianceCalculator.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkCovarianceCalculator.h,v $
00005   Language:  C++
00006   Date:      $Date: 2005/07/26 15:54:54 $
00007   Version:   $Revision: 1.13 $
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 
00018 #ifndef __itkCovarianceCalculator_h
00019 #define __itkCovarianceCalculator_h
00020 
00021 #include "itkSampleAlgorithmBase.h"
00022 
00023 #include "itkArray.h"
00024 #include "itkVariableSizeMatrix.h"
00025 
00026 namespace itk{ 
00027 namespace Statistics{
00028   
00052 template< class TSample >
00053 class CovarianceCalculator :
00054     public SampleAlgorithmBase< TSample >
00055 {
00056 public:
00058   typedef CovarianceCalculator Self;
00059   typedef SampleAlgorithmBase< TSample > Superclass ;
00060   typedef SmartPointer<Self> Pointer;
00061   typedef SmartPointer<const Self> ConstPointer;
00062 
00064   itkTypeMacro(CovarianceCalculator, SampleAlgorithmBase);
00065   itkNewMacro(Self) ;
00067 
00069   typedef typename Superclass::MeasurementVectorSizeType MeasurementVectorSizeType;
00070 
00072   typedef typename Superclass::MeasurementVectorType MeasurementVectorType;
00073 
00075   typedef Array< double >                            MeanType;
00076 
00078   typedef VariableSizeMatrix< double >               OutputType;
00079 
00081   void SetMean(MeanType* mean) ;
00082 
00084   MeanType* GetMean() ;
00085 
00087   const OutputType * GetOutput() const;
00088 
00089 protected:
00090   CovarianceCalculator() ;
00091   virtual ~CovarianceCalculator() ;
00092   void PrintSelf(std::ostream& os, Indent indent) const;
00093 
00098   void GenerateData() ;
00099 
00101   void ComputeCovarianceWithGivenMean() ;
00102 
00104   void ComputeCovarianceWithoutGivenMean() ;
00105 
00106 private:
00107   MeanType* m_Mean ;
00108   MeanType* m_InternalMean ;
00109   OutputType m_Output ;
00110 } ; // end of class
00111     
00112 } // end of namespace Statistics 
00113 } // end of namespace itk 
00114 
00115 #ifndef ITK_MANUAL_INSTANTIATION
00116 #include "itkCovarianceCalculator.txx"
00117 #endif
00118 
00119 #endif
00120 
00121 

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