A smooth symmetric peak function that resembles the Gaussian bell curve. More...

#include <Fuzzy.h>

Inheritance diagram for FuzzyBell< T >:

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Collaboration diagram for FuzzyBell< T >:

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Public Member Functions
	FuzzyBell (double location=0.0, double width=1.0, double scale=1.0, double bias=0.0)

	FuzzyBell (const FuzzyBell &f)

void	set (double location=0.0, double width=1.0, double scale=1.0, double bias=0.0)

void	set (const UniTuple< double, 2 > &range, double scale=1.0, double bias=0.0)

virtual void	updateBean () const override
	Called after setParameters()

virtual double	operator() (double x) const

Public Member Functions inherited from Fuzzifier< T >
	Fuzzifier (const std::string &name, const std::string &description="", double scale=1.0, double bias=0.0)

bool	isInversed ()
	Updates internal variables. Should be called after modifying public members.

Public Member Functions inherited from UnaryFunctor
	UnaryFunctor (const std::string &name, const std::string &description="", double scale=1.0, double bias=0.0)

Public Member Functions inherited from Functor
void	setScale (double scale, double bias=0.0)

Public Member Functions inherited from BeanLike
	BeanLike (const BeanLike &b)

	BeanLike (const std::string &name, const std::string &description="")

virtual const std::string &	getName () const
	Return the name of an instance.

virtual const std::string &	getDescription () const
	Return a brief description.

bool	hasParameters () const

template<class F >
F	getParameter (const std::string &p) const
	Gets a single parameter.

const map_t &	getParameters () const

map_t &	getParameters ()

template<class F >
void	setParametersFromEntries (const F &args)

void	setParameters (std::initializer_list< Variable::init_pair_t > args)
	Grants access to (if above hidden)

virtual void	setParameters (const std::string &p, char assignmentSymbol='=', char separatorSymbol=0)
	Sets comma-separated parameters in a predetermined order "a,b,c" or by specifing them "b=2".

template<class T >
void	setParameters (const std::map< std::string, T > &args)
	Set parameters.

template<class T >
void	setParameters (const SmartMap< T > &args)
	Set parameters.

void	setParameter (const std::string &p, const Castable &value)
	Sets a single parameter.

template<class T >
void	setParameter (const std::string &p, const VariableT< T > &value)

template<class F >
void	setParameter (const std::string &p, const F &value)
	Sets a single parameter.

template<class F >
void	setParameter (const std::string &p, std::initializer_list< F > value)
	Sets a single parameter.

BeanLike &	operator= (const BeanLike &b)

virtual std::ostream &	toStream (std::ostream &ostr, bool compact=true) const

Public Attributes
double	location = 0.0

double	width = 1.0

Protected Attributes
double	widthInv = 1.0

Protected Attributes inherited from Fuzzifier< T >
bool	INVERSE

Protected Attributes inherited from Functor
double	scale
	Relative scale, typically 1. Optional.

double	bias
	"Relative" bias, typically 0. Optional.

double	scaleFinal
	Scaling factor after encodings of src and dst images are known.

double	biasFinal
	Scaling factor after encodings of src and dst images are known.

Protected Attributes inherited from BeanLike
const std::string	name

const std::string	description

map_t	parameters

Additional Inherited Members
Public Types inherited from BeanLike
typedef ReferenceMap	map_t

Protected Member Functions inherited from Fuzzifier< T >
virtual void	updateScale () const

Protected Member Functions inherited from Functor
	Functor (const std::string &name, const std::string &description="", double scale=1.0, double bias=0.0)

	Functor (const Functor &fct)

Protected Member Functions inherited from BeanLike
virtual void	storeLastArguments (const std::string &p)
	Called after setParameters()

Detailed Description

template<class T>
class drain::FuzzyBell< T >

A smooth symmetric peak function that resembles the Gaussian bell curve.

Template Parameters

T	- input type (typically double)
T2	- output type (typically double)

Parameters

location	- center of the peak
width	- half-width of the peak; if negative, the peak will be upside down
scale	- multiplication in scaling (scale*x + bias); default=1.0
bias	- offset in scaling (scale*x + bias); default=0.0

The approximation applies

drainage image-gray.png        --iFuzzyBell 128,16   -o fuzzyBell.png
drainage image-gray.png -R 0:1 --iFuzzyBell 0.5,0.2  -o fuzzyBell-phys.png
drainage image-gray.png -T S   --iFuzzyBell 128,16   -o fuzzyBell-16bit.png