lti::gHoughTransform Class Reference

The Generalized-Hough-Transform. More...

#include <ltiGHoughTransform.h>

Inheritance diagram for lti::gHoughTransform:

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Collaboration diagram for lti::gHoughTransform:

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List of all members.

Classes
class	parameters
	the parameters for the class houghTransform More...
Public Member Functions
	gHoughTransform ()
	gHoughTransform (const gHoughTransform &other)
virtual	~gHoughTransform ()
virtual const char *	getTypeName () const
bool	use (const channel &src)
bool	use (const tpointList< int > &src)
bool	apply (const channel &src, std::list< vector< float > > &dest)
bool	apply (const channel &sample, const channel &src, std::list< vector< float > > &dest)
bool	apply (const tpointList< int > &contour, const channel &src, std::list< vector< float > > &dest)
bool	draw (const std::list< vector< float > > &src, image &dest, const rgbPixel &color=rgbPixel(255, 0, 0))
gHoughTransform &	copy (const gHoughTransform &other)
virtual functor *	clone () const
const parameters &	getParameters () const

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Detailed Description

The Generalized-Hough-Transform.

The Generalized-Hough-Transform detects arbitrary shapes, which have to be specified before (by use()). It transforms the channel into a four dimensional parameter space (discretisation can be set in parameters). Therefore it requires a lot of storage and extensive computation. Peaks in parameter-space are searched and returned as result. The found object can be drawn back into the image by draw().

See also:

lti::orientedHLTransform

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Constructor & Destructor Documentation

lti::gHoughTransform::gHoughTransform

(

)

default constructor

lti::gHoughTransform::gHoughTransform

(

const gHoughTransform &

other

)

copy constructor

Parameters:

other

the object to be copied

virtual lti::gHoughTransform::~gHoughTransform

(

)

[virtual]

destructor

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Member Function Documentation

bool lti::gHoughTransform::apply	(	const tpointList< int > &	contour,
		const channel &	src,
		std::list< vector< float > > &	dest
	)

Apply.

Parameters:

	contour,:	tpointList of object which is to be found later on
	src,:	find object specified by contour in channel src
	dest,:	list containing vectors, that each represent a found object by five entries: shift_x, shift_y,size factor,rotation,relevance

bool lti::gHoughTransform::apply	(	const channel &	sample,
		const channel &	src,
		std::list< vector< float > > &	dest
	)

Apply.

Parameters:

	sample,:	channel of object which is to be found later on
	src,:	find object specified by sample in channel src
	dest,:	list containing vectors, that each represent a found object by five entries: shift_x, shift_y,size factor,rotation,relevance

bool lti::gHoughTransform::apply	(	const channel &	src,
		std::list< vector< float > > &	dest
	)

Apply.

Parameters:

	src,:	find object specified by use in channel src
	dest,:	list containing vectors, that each represent a found object by five entries: shift_x, shift_y,size factor,rotation,relevance

virtual functor* lti::gHoughTransform::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Implements lti::functor.

gHoughTransform& lti::gHoughTransform::copy

(

const gHoughTransform &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

bool lti::gHoughTransform::draw	(	const std::list< vector< float > > &	src,
		image &	dest,
		const rgbPixel &	color = rgbPixel(255, 0, 0)
	)

Draw.

Parameters:

	src,:	list containing vectors, that each represent a found object by five entries: shift_x, shift_y,size factor,rotation,relevance and is computed by apply-method
	dest,:	draw into this image
	color,:	use this color for drawing

const parameters& lti::gHoughTransform::getParameters

(

)

const

returns used parameters

Reimplemented from lti::modifier.

virtual const char* lti::gHoughTransform::getTypeName

(

)

const [virtual]

returns the name of this type ("houghTransform")

Reimplemented from lti::modifier.

bool lti::gHoughTransform::use

(

const tpointList< int > &

src

)

Parameters:

src

tpointList of object which is to be found later on

bool lti::gHoughTransform::use

(

const channel &

src

)

Parameters:

src

channel of object which is to be found later on

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

• ltiGHoughTransform.h