RVL::RVLScalarLogistic< Scalar > Class Template Reference

This BFO implements the scalar version of the logistic function $f(x) = x (1 + s^2 x^2)^{-1/2} + m$ , where $s=2/(f_{\rm max} - f_{\rm min})$ and $m=(f_{\rm max} + f_{\rm min})/2$ . More...

#include <logistic.hh>

Inheritance diagram for RVL::RVLScalarLogistic< Scalar >:

List of all members.


Public Member Functions
	RVLScalarLogistic (Scalar fmin=ScalarFieldTraits< Scalar >::Zero(), Scalar fmax=ScalarFieldTraits< Scalar >::One())
	~RVLScalarLogistic ()
void	operator() (LocalDataContainer< Scalar > &x, LocalDataContainer< Scalar > const &y)
string	getName () const

Detailed Description

template<class Scalar>
class RVL::RVLScalarLogistic< Scalar >

This BFO implements the scalar version of the logistic function $f(x) = x (1 + s^2 x^2)^{-1/2} + m$ , where $s=2/(f_{\rm max} - f_{\rm min})$ and $m=(f_{\rm max} + f_{\rm min})/2$ .

This function has the properties

$f(x) \rightarrow f_{\rm max},\,\,x \rightarrow \infty$
$f(x) \rightarrow f_{\rm min},\,\,x \rightarrow -\infty$
$f(0) = m,\,\, f'(0)=1$

The function is applied to each component of the input LDC, value written to the corresponding component of the output LDC. Input and output must have the same length.

Definition at line 57 of file logistic.hh.

Constructor & Destructor Documentation

template<class Scalar>

RVL::RVLScalarLogistic< Scalar >::RVLScalarLogistic	(	Scalar	fmin = `ScalarFieldTraits<Scalar>::Zero()`,
		Scalar	fmax = `ScalarFieldTraits<Scalar>::One()`
	)