cmtkQRDecomposition.h

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/*
//
//  Copyright 1997-2009 Torsten Rohlfing
//
//  Copyright 2004-2010 SRI International
//
//  This file is part of the Computational Morphometry Toolkit.
//
//  http://www.nitrc.org/projects/cmtk/
//
//  The Computational Morphometry Toolkit is free software: you can
//  redistribute it and/or modify it under the terms of the GNU General Public
//  License as published by the Free Software Foundation, either version 3 of
//  the License, or (at your option) any later version.
//
//  The Computational Morphometry Toolkit is distributed in the hope that it
//  will be useful, but WITHOUT ANY WARRANTY; without even the implied
//  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License along
//  with the Computational Morphometry Toolkit.  If not, see
//  <http://www.gnu.org/licenses/>.
//
//  $Revision: 2676 $
//
//  $LastChangedDate: 2010-12-15 14:50:13 -0800 (Wed, 15 Dec 2010) $
//
//  $LastChangedBy: torstenrohlfing $
//
*/

#ifndef __cmtkQRDecomposition_h_included_
#define __cmtkQRDecomposition_h_included_

#include <cmtkconfig.h>

#include <Base/cmtkMatrix.h>
#include "Numerics/ap.h"

namespace
cmtk
{


template<class TFloat>
class QRDecomposition
{
public:
  typedef Matrix2D<TFloat> matrix2D;

  typedef SmartPointer< matrix2D > matrixPtr;

  QRDecomposition( const Matrix2D<TFloat>& matrix );

  matrix2D& GetQ();
  
  matrix2D& GetR(); 

protected:
  ap::real_2d_array compactQR;

  ap::real_1d_array tau;

  matrixPtr Q;
  
  matrixPtr R;

private:
   
  int m; 
  int n;
  bool extractedQ; 
  bool extractedR;

};


} // namespace cmtk

#include "cmtkQRDecomposition.txx"

#endif // #ifndef __cmtkQRDecomposition_h_included_