RGBColorModel.h

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// ****************************************************************************
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// ****************************************************************************
// ****************************************************************************
// Filename:  RGBColorModel.h
// Author:    Pedram Azad
// Date:      2005
// ****************************************************************************

#ifndef __RGB_COLOR_MODEL_H__
#define __RGB_COLOR_MODEL_H__


// ****************************************************************************
// Necessary includes
// ****************************************************************************

#include "Math/Math3d.h"



// ****************************************************************************
// CRGBColorModel
// ****************************************************************************

class CRGBColorModel
{
public:
        // constructor
        CRGBColorModel();

        // destructor
        ~CRGBColorModel();


        // public methods
        void Reset(int nMaxNumberOfTriplets);
        bool AddRGBTriplet(int r, int g, int b);
        void CalculateColorModel();
        
        // saving/loading color models
        bool LoadFromFile(const char *pFileName);
        bool SaveToFile(const char *pFileName);

        // member access
        void SetFactor(float fFactor) { m_fFactor = fFactor; }
        void SetMean(const Vec3d &mean);
        void SetInverseCovariance(const Mat3d &inverse_covariance);

        // others
        // rgb is a vector containing an RGB triplet
        float CalculateColorProbability(const Vec3d &rgb);
        float CalculateColorDistanceSquared(int r, int g, int b);


private:
        // private attributes
        Vec3d rgb_mean;
        Mat3d inverse_rgb_covariance;
        
        Vec3d *m_pTriplets;
        int m_nMaxNumberOfTriplets;
        int m_nCurrentPosition;
        float m_fFactor;
};



#endif /* __RGB_COLOR_MODEL_H__ */