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celeste/GaborFilter.h

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/* Import from Gabor API

Copyright (c) 2002-3 Adriaan Tijsseling


                             All Rights Reserved

    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/

/*
        Description:    Class definition for a single Gabor Filter
        Author:         Adriaan Tijsseling (AGT)
        Copyright:      (c) Copyright 2002-3 Adriaan Tijsseling. All rights reserved.
*/


#ifndef __GABORFILTER__
#define __GABORFILTER__

#include "GaborGlobal.h"
#include "PGMImage.h"

class GaborFilter
{
public:

        GaborFilter();
        ~GaborFilter();
        
        void    Initialize( int radius, float a, float f, float s, float p = 0 );
        void    Save( char* file, int angle, int freq );

        inline float    GetReal( int x, int y ) { return mReal[x][y]; }
        inline float    GetImaginary( int x, int y ) { return mImaginary[x][y]; }
        
protected:

        int                     mXYO;                   // origin
        int                     mRadius;                // radius of filter
        float           mSigma;                 // curve of gaussian (sually set to PI)
        float           mAngle;                 // orientation of filter (theta)
        float           mPhase;                 // phase of filter (rho)
        float           mFrequency;             // wavelengths of filter (omega)
        float**         mReal;                  // real part of filter
        float**         mImaginary;             // imaginary part of filter
};

#endif

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