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itkGaussianGoodnessOfFitComponent.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkGaussianGoodnessOfFitComponent.h,v $
00005   Language:  C++
00006   Date:      $Date: 2003/09/10 14:29:45 $
00007   Version:   $Revision: 1.8 $
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 __itkGaussianGoodnessOfFitComponent_h
00018 #define __itkGaussianGoodnessOfFitComponent_h
00019 
00020 #include "itkGoodnessOfFitComponentBase.h"
00021 #include "itkGaussianDensityFunction.h"
00022 #include "itkFunctionBase.h"
00023 #include "itkWeightedCovarianceCalculator.h"
00024 #include "itkSymmetricEigenSystem.h"
00025 
00026 namespace itk{ 
00027 namespace Statistics{
00028 
00044 template< class TInputSample >
00045 class GaussianGoodnessOfFitComponent 
00046   : public GoodnessOfFitComponentBase< TInputSample > 
00047 {
00048 public:
00050   typedef GaussianGoodnessOfFitComponent Self;
00051   typedef GoodnessOfFitComponentBase< TInputSample > Superclass;
00052   typedef SmartPointer< Self > Pointer;
00053   typedef SmartPointer< const Self > ConstPointer;
00054   
00056   itkTypeMacro(GaussianGoodnessOfFitComponent, 
00057                GoodnessOfFitComponentBase) ;
00058   
00060   itkNewMacro(Self) ;
00061 
00063   itkStaticConstMacro(MeasurementVectorSize, unsigned int,
00064                       TInputSample::MeasurementVectorSize) ;
00065   typedef typename TInputSample::MeasurementType MeasurementType ;
00066   typedef typename TInputSample::MeasurementVectorType MeasurementVectorType ;
00067 
00069   typedef typename Superclass::CenterType CenterType ;
00070   typedef typename Superclass::RadiusType RadiusType ;
00071   typedef typename Superclass::MeanType MeanType ;
00072   typedef typename Superclass::StandardDeviationType StandardDeviationType ;
00073   typedef typename Superclass::ResampledSampleType ResampledSampleType ;
00074   typedef typename Superclass::ProjectionAxisArrayType ProjectionAxisArrayType;
00075   typedef Array< double > ParametersType ;
00076 
00079   typedef GaussianDensityFunction< MeasurementVectorType > 
00080   ProbabilityDensityFunctionType ;
00081 
00082   typedef typename ProbabilityDensityFunctionType::CovarianceType CovarianceType ;
00083 
00087   typedef WeightedCovarianceCalculator< ResampledSampleType > 
00088   CovarianceCalculatorType ;
00089 
00091   typedef SymmetricEigenSystem< double, 
00092                                 itkGetStaticConstMacro(MeasurementVectorSize) >
00093   ProjectionAxisCalculatorType ;
00094 
00097   unsigned int GetNumberOfParameters() const
00098   { return (unsigned int)(itkGetStaticConstMacro(MeasurementVectorSize) + 1) ; }
00099 
00101   void SetParameters(const ParametersType &parameter) ;
00102 
00104   CenterType* GetCenter() ;
00105 
00107   RadiusType* GetRadius() ;
00108   
00110   MeanType* GetMean() ;
00111 
00113   StandardDeviationType* GetStandardDeviation() ;
00114 
00116   double GetCumulativeProbability(double x) const ;
00117 
00119   double GetProbabilityDensity(MeasurementVectorType &measurements) const ;
00120 
00122   void PrintParameters(std::ostream &os) const ;
00123 
00126   ParametersType GetFullParameters() const ;
00127 
00128 protected:
00129   GaussianGoodnessOfFitComponent() ;
00130   virtual ~GaussianGoodnessOfFitComponent() ;
00131   virtual void PrintSelf(std::ostream& os, Indent indent) const ;
00132 
00134   virtual void CalculateProjectionAxes() ;
00135 
00136 private:
00137   typename ProbabilityDensityFunctionType::Pointer 
00138   m_ProbabilityDensityFunction ;
00139   typename CovarianceCalculatorType::Pointer m_CovarianceCalculator ;
00140   typename ProjectionAxisCalculatorType::Pointer m_ProjectionAxisCalculator ;
00141 
00142   MeanType m_Mean ;
00143   CenterType m_Center ;
00144   RadiusType m_Radius ;
00145   StandardDeviationType m_StandardDeviation ;
00146   CovarianceType m_Covariance ;
00147 
00148   unsigned int m_NumberOfParameters ;
00149 
00150   int m_LongestAxisIndex ;
00151   double m_LargestEigenValue ;
00152 } ; // end of class
00153 
00154 } // end of namespace Statistics 
00155 } // end of namespace itk
00156 
00157 #ifndef ITK_MANUAL_INSTANTIATION
00158 #include "itkGaussianGoodnessOfFitComponent.txx"
00159 #endif
00160 
00161 #endif
00162 

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