linefithough.h

来自「barcode readers [ from Image]」· C头文件 代码 · 共 65 行

//
// Fit a line to a vector of data using the Hough transform
//   (slope-intercept form).
//
// 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 LineFitHough_h
#define LineFitHough_h

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

namespace Algorithm
{

	class CLineFitHough: public CBase
    {
        // Lifecycle
    public:
        IMPORT_C static CLineFitHough* NewL(int nMinY, int nMaxY, TReal fMinSlope, TReal fMaxSlope, int nSteps);
        ~CLineFitHough(void);

    private:
        CLineFitHough(int nMinY, int nMaxY, TReal fMinSlope, TReal fMaxSlope, int nSteps);

		void ConstructL();

        // Operations
    public:
        // FitExact
        //  Input:
        //    pPoints: array of points
        //  Output:
        //
        IMPORT_C void DoIt(CArrayFix<TPoint>* pPoints, int& nY, TReal& slope, int& nPoints);
    private:
		int* iAccumulator;		// the Hough accumulator array
		TReal ifMaxSlope;		// maximum slope
		TReal ifMinSlope;		// minimum slope
		TInt inMaxY;			// max Y intercept
		TInt inMinY;			// min Y intercept
		TInt inSlopeSteps;		// number of slope intervals
		TInt inYSteps;			// number of Y steps (= inMaxY - inMinY)

    };

};

#endif // LineFitHough_h