/* -*- mode: c++ -*-
*/
/*
GIFT, a flexible content based image retrieval system.
Copyright (C) 1998, 1999, 2000 CUI, University of Geneva
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _CCUTOFFFUNCTION
#define _CCUTOFFFUNCTION
#include <functional>
template<class content_type>
class CCutoffFunction:public unary_function<bool,content_type>{
protected:
///
double mUpperCutoff;
///
double mLowerCutoff;
public:
///
virtual bool isOnePass(){
return true;
}
///
virtual void startFirstPass(){
assert(!"should never be called");
}
///
virtual void adjustInnerState(const content_type&){
assert(!"should never be called");
}
///
virtual bool operator()(const content_type& i)const{
return (i.getProbability()>mUpperCutoff)
||
(i.getProbability()<=mLowerCutoff);
};
///
inline void setUpperCutoff(double inUC){
mUpperCutoff=inUC;
}
///
inline void setLowerCutoff(double inLC){
mLowerCutoff=inLC;
}
///
virtual CCutoffFunction* clone()const{
assert(!"should never be called");
};
};
template<class content_type>
class CCFAbsolute:public CCutoffFunction<content_type>{
protected:
public:
CCFAbsolute(double inMin=0){
};
///
virtual bool isOnePass(){
return true;
}
///
virtual void startFirstPass(){
assert(0);
}
///
virtual void adjustInnerState(const content_type&){
assert(0);
}
///
virtual bool operator()(const content_type& i)const{
/* cout << "[" << i.getProbability() */
/* << "-" << mUpperCutoff */
/* << "+" << mLowerCutoff << "]"; */
return (i.getProbability()>mUpperCutoff)
||
(i.getProbability()<=mLowerCutoff);
};
///
virtual CCutoffFunction<content_type>* clone()const{
return new CCFAbsolute(*this);
};
};
#endif
Documentation generated by muellerw@pc7170 on Son Okt 8 16:04:40 CEST 2000