www.pudn.com > faces.rar > compare.c

/*** 
 **     libface - Library of face recognition and supporting algorithms 
        Copyright (c) 2003 Stefan Farthofer 
 
	This file is part of libface, which 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, write to the Free Software 
        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 
	For further information seek us at http://sourceforge.net/projects/openbio/ 
**	or write an email to dimitri.pissarenko@gmx.net or farthofer@chello.at. 
***/ 
 
#include  
#include "frbase.h" 
#include "fr.h" 
#include "recoalgo.h" 
 
int frCmp(FRrecognitionParameters* gParms, FRimageTrait* traits1, FRimageTrait* traits2, float* match) { 
	float temp; 
	unsigned int i; 
	int err=FR_OK; 
	FRrecoAlgo* algo; 
 
	/* we calculate the arithmetic mean, initialize with zero */ 
	*match=0.0f; 
 
	/* get results */ 
	for (i=0; err == FR_OK && i < gParms->nrAlgorithms; i++) { 
		algo = frGetRecoAlgoById(gParms->algorithms[i].algorithmType); 
		err = algo->compareTraits(gParms, gParms->algorithms[i].data, traits1[i].data, traits2[i].data, &temp); 
		*match = *match + temp; /* add */ 
	} 
 
	/* and divide */ 
	*match = *match / (float)gParms->nrAlgorithms; 
	return err; 
}