lti::probabilityMap2D Class Reference

Probability Map based on 2D non-parametric (color) models. More...

#include <ltiProbabilityMap2D.h>

Inheritance diagram for lti::probabilityMap2D:

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Collaboration diagram for lti::probabilityMap2D:

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List of all members.

Classes
class	parameters
	the parameters for the class probabilityMap2D More...
Public Member Functions
	probabilityMap2D ()
	probabilityMap2D (const parameters &theParams)
	probabilityMap2D (const probabilityMap2D &other)
virtual	~probabilityMap2D ()
virtual const char *	getTypeName () const
virtual bool	apply (const channel8 &src1, const channel8 &src2, channel &dest) const
virtual float	apply (const ubyte &value1, const ubyte &value2, ivector &theBin) const
virtual float	apply (const ubyte &value1, const ubyte &value2) const
probabilityMap2D &	copy (const probabilityMap2D &other)
probabilityMap2D &	operator= (const probabilityMap2D &other)
virtual functor *	clone () const
const parameters &	getParameters () const
virtual bool	read (ioHandler &handler, const bool complete=true)
bool	computeMap (const channel8 &src1, const channel8 &src2, channel &aPrioriDest) const

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Detailed Description

Probability Map based on 2D non-parametric (color) models.

Creates a probability map given two chromacity histogram, one modelling the object color and the other modeling the non-object colors.

The probability of a specified color rgb is calculated according to the Bayes formula:

where p(obj) is the overall objectProbability, p(nonobj) := 1 - p(obj).

and are read from the given object and non-object models.

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Constructor & Destructor Documentation

lti::probabilityMap2D::probabilityMap2D

(

)

default constructor

lti::probabilityMap2D::probabilityMap2D

(

const parameters &

theParams

)

constructor

Parameters:

theParams

the parameters to be used

lti::probabilityMap2D::probabilityMap2D

(

const probabilityMap2D &

other

)

copy constructor

Parameters:

other

the object to be copied

virtual lti::probabilityMap2D::~probabilityMap2D

(

)

[virtual]

destructor

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Member Function Documentation

virtual float lti::probabilityMap2D::apply	(	const ubyte &	value1,
		const ubyte &	value2
	)			const [virtual]

returns the object probability for a chromacity value (values range from 0.0 to 1.0).

This method is thread safe, but much slower than the other one.

Parameters:

	value1	pixel' value int the first chromacity band.
	value2	pixel' value int the second chromacity band.

Returns:

the object probability

virtual float lti::probabilityMap2D::apply	(	const ubyte &	value1,
		const ubyte &	value2,
		ivector &	theBin
	)			const [virtual]

returns the object probability for a chromacity color value (values range from 0.0 to 1.0).

This method uses the given vector to compute the index of the histogram. It MUST be preinitialized with a size of 2, or the method will crash.

The idea is to externally provide an ivector in order to spare some creation time.

Parameters:

	value1	pixel' value int the first chromacity band.
	value2	pixel' value int the second chromacity band.
	theBin	index vector computed by the method to the histogram entry.

Returns:

the object probability

virtual bool lti::probabilityMap2D::apply	(	const channel8 &	src1,
		const channel8 &	src2,
		channel &	dest
	)			const [virtual]

creates a object probability channel of an image (values range from 0.0 to 1.0).

Parameters:

	src1	channel with the first chromacity band.
	src2	channel with the second chromacity band.
	dest	channel where the result will be left.

Returns:

true is successful, false otherwise

virtual functor* lti::probabilityMap2D::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Implements lti::probabilityMapBase.

bool lti::probabilityMap2D::computeMap	(	const channel8 &	src1,
		const channel8 &	src2,
		channel &	aPrioriDest
	)			const

compute the second and up iterations of a probability map using the given aPriori probabilites per pixel.

probabilityMap2D& lti::probabilityMap2D::copy

(

const probabilityMap2D &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::probabilityMapBase.

const parameters& lti::probabilityMap2D::getParameters

(

)

const

returns used parameters

Reimplemented from lti::probabilityMapBase.

virtual const char* lti::probabilityMap2D::getTypeName

(

)

const [virtual]

returns the name of this type ("probabilityMap2D")

Reimplemented from lti::probabilityMapBase.

probabilityMap2D& lti::probabilityMap2D::operator=

(

const probabilityMap2D &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::probabilityMapBase.

virtual bool lti::probabilityMap2D::read	(	ioHandler &	handler,
		const bool	complete = true
	)			[virtual]

Read the functor from the given ioHandler.

The default implementation is to read just the parameters object.

Since this virtual method needs to know the exact type of the parameters to call the proper read method, it will just assume that the current functor instance has a valid parameter set. If this is not the case, you need to reimplement the read method to set first a dummy parameter object.

Parameters:

	handler	the ioHandler to be used
	complete	if true (the default) the enclosing begin/end will be also written, otherwise only the data block will be written.

Returns:

true if write was successful

Implements lti::probabilityMapBase.

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The documentation for this class was generated from the following file:

• ltiProbabilityMap2D.h