linefit.h

barcode readers [ from Image]

//
// Fit a line to a vector of data. Uses method from section 15.2 of
//   "Numerical Recipes in C : The Art of Scientific Computing"
//   by William H. Press, Brian P. Flannery, Saul A. Teukolsky, William T. Vetterling.
//   Cambridge University Press; 2 edition (October 30, 1992).
//   The original source of this code was the fit function from
//   Section 15.2 of the book. See http://library.lanl.gov/numerical/bookcpdf.html
//   for a complete PDF of the book.
//
// Copyright (C) 2006 by Jon A. Webb (Contact via GMail; username is jonawebb)
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library 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
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//

#ifndef LineFit_h
#define LineFit_h

#include <e32cons.h>
#include <e32math.h>

namespace Algorithm
{

	class CLineFit: public CBase
    {
        // Lifecycle
    public:
        IMPORT_C static CLineFit* NewL();
        ~CLineFit(void);

    private:
        CLineFit();

        // Operations
    public:
        // FitExact
        //  Input:
        //    pPoints: array of points
        //  Output:
        //
        IMPORT_C bool FitExact(CArrayFix<TPoint>* pPoints, TReal *a, TReal *b, TReal *siga, TReal *sigb, TReal *chi2);

		IMPORT_C bool FitNoisy(CArrayFix<TPoint>* pPoints, TReal *a, TReal *b, TReal maxChi2);

    private:
    };

};

#endif // LineFit_h