PCA.hh

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//=============================================================================
//
//  CLASS PCA
//
//=============================================================================


#ifndef PCA_HH
#define PCA_HH

//== INCLUDES =================================================================

#include <gmm/gmm.h>

//== FORWARDDECLARATIONS ======================================================

//== NAMESPACES ===============================================================

namespace Pca {
 
//== CLASS DEFINITION =========================================================
              
template < typename VectorT >
class PCA
{
  typedef gmm::dense_matrix<double>  Matrix;
  typedef std::vector< double >      Vector;

public:
   
  PCA() {}
  
  PCA( std::vector< VectorT >& _points, VectorT& _first , VectorT& _second , VectorT& _third);
 
  ~PCA();
  
  inline VectorT center_of_gravity(const std::vector< VectorT >& _points );
  
  void pca(std::vector< VectorT >& _points , VectorT& _first , VectorT& _second , VectorT& _third);


  std::vector<double>& getLastEigenValues();

  bool SymRightEigenproblem( Matrix &_mat_A, Matrix & _mat_VR,
                             std::vector< double > & _vec_EV );
private:

  std::vector<double> lastEigenValues_;

};


//=============================================================================
} //namespace Pca
//=============================================================================
#if defined(INCLUDE_TEMPLATES) && !defined(PCA_C)
#define PCA_TEMPLATES
#include "PCA.cc"
#endif
//=============================================================================
#endif // PCA_HH defined
//=============================================================================