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itkWeightedMeanCalculator.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkWeightedMeanCalculator.h,v $
00005   Language:  C++
00006   Date:      $Date: 2002/09/21 05:44:26 $
00007   Version:   $Revision: 1.4 $
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 
00018 #ifndef __itkWeightedMeanCalculator_h
00019 #define __itkWeightedMeanCalculator_h
00020 
00021 #include <vnl/vnl_vector.h>
00022 #include <vnl/vnl_matrix.h>
00023 
00024 #include "itkArray.h"
00025 #include "itkVector.h"
00026 #include "itkFunctionBase.h"
00027 #include "itkSampleAlgorithmBase.h"
00028 
00029 namespace itk{ 
00030 namespace Statistics{
00031   
00043 template< class TSample >
00044 class WeightedMeanCalculator :
00045     public SampleAlgorithmBase< TSample >
00046 {
00047 public:
00049   typedef WeightedMeanCalculator Self;
00050   typedef SampleAlgorithmBase< TSample > Superclass ;
00051   typedef SmartPointer<Self> Pointer;
00052 
00054   itkTypeMacro(WeightedMeanCalculator, SampleAlgorithmBase);
00055   itkNewMacro(Self) ;
00056   
00057   itkStaticConstMacro(MeasurementVectorSize, unsigned int,
00058                       TSample::MeasurementVectorSize);
00059 
00060   typedef typename TSample::MeasurementVectorType MeasurementVectorType ;
00061 
00063   typedef Vector< double, itkGetStaticConstMacro(MeasurementVectorSize) > OutputType ;
00064   
00066   typedef Array< double > WeightArrayType ;
00067 
00069   void SetWeights(WeightArrayType* array) ;
00070   
00072   WeightArrayType* GetWeights() ;
00073 
00075   typedef FunctionBase< MeasurementVectorType, double > WeightFunctionType ;
00076 
00080   void SetWeightFunction(WeightFunctionType* func) ;
00081 
00083   WeightFunctionType* GetWeightFunction() ;
00084 
00086   OutputType* GetOutput() ;
00087 
00088 protected:
00089   WeightedMeanCalculator() ;
00090   virtual ~WeightedMeanCalculator() {}
00091   void PrintSelf(std::ostream& os, Indent indent) const;
00092 
00094   void GenerateData() ;
00095 
00096 private:
00097   WeightArrayType* m_Weights ;
00098   WeightFunctionType* m_WeightFunction ;
00099   OutputType m_Output ;
00100 } ; // end of class
00101     
00102 } // end of namespace Statistics 
00103 } // end of namespace itk 
00104 
00105 #ifndef ITK_MANUAL_INSTANTIATION
00106 #include "itkWeightedMeanCalculator.txx"
00107 #endif
00108 
00109 #endif
00110 

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