Utility class for the parable-based chromaticity segmentation. More...

#include <Parable.h>

Public Member Functions
	Parable ()
	create an empty parable (a=b=c=0)
	Parable (float a, float b, float c)
	create a parable with given parameters a,b and c
	Parable (utils::Point32f p1, utils::Point32f p2, utils::Point32f p3)
	create a parable with given 3 points
float	operator() (float x) const
	Evaluate this parable at a given location x.
void	show () const
	shows this parable to std::out
Public Attributes
float	a
float	b
float	c

Detailed Description

Utility class for the parable-based chromaticity segmentation.

A parabolic function is defined by 3 parameters a,b and c:

$f(x) = ax^2 + bx + c$

Parables can be created by given parameters a,b and c or by 3 given points.

Constructor & Destructor Documentation

icl::core::Parable::Parable ( ) [inline]

create an empty parable (a=b=c=0)

icl::core::Parable::Parable	(	float	a,
		float	b,
		float	c
	)		`[inline]`

create a parable with given parameters a,b and c

icl::core::Parable::Parable	(	utils::Point32f	p1,
		utils::Point32f	p2,
		utils::Point32f	p3
	)		`[inline]`

create a parable with given 3 points

To avoid numerical problems, the x coordinates of the given points are increased by a small value (0.00000001 - 0.00000003). This is harmless, as the Parable struct is used for the ChromaWidget, where given input point are defined by relative widget coordination which much less resolution