lti::geometricFeatureGroup0 Class Reference
[Geometry Data Structures]

Description of the simpliest geometric features given by the rectangle surrounding the object, the object's area and the center of gravity. More...

#include <ltiGeometricFeatureGroup.h>

Inheritance diagram for lti::geometricFeatureGroup0:

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Collaboration diagram for lti::geometricFeatureGroup0:

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List of all members.

Public Member Functions
	geometricFeatureGroup0 ()
	geometricFeatureGroup0 (const point &initMinX, const point &initMaxX, const point &initMinY, const point &initMaxY, const int initArea, const tpoint< float > &initCog)
	geometricFeatureGroup0 (const geometricFeatureGroup0 &other)
Duplication
geometricFeatureGroup0 &	copy (const geometricFeatureGroup0 &other)
geometricFeatureGroup0 &	operator= (const geometricFeatureGroup0 &other)
Computation of the geometric features.
bool	addObjectPoint (int x, int y)
bool	addObjectPoint (point p)
bool	completeComputation ()
bool	operator+= (const geometricFeatureGroup0 &other)
Comparison
bool	operator== (const geometricFeatureGroup0 &other) const
bool	operator!= (const geometricFeatureGroup0 &other) const
bool	isClose (const geometricFeatureGroup0 &other, const point &dist) const
Input and Output
bool	read (ioHandler &handler, const bool complete=true)
bool	write (ioHandler &handler, const bool complete=true)
Public Attributes
point	minX
point	maxX
point	minY
point	maxY
int	area
tpoint< float >	cog

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Detailed Description

Description of the simpliest geometric features given by the rectangle surrounding the object, the object's area and the center of gravity.

Other geometric feature classes can be derived.

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Constructor & Destructor Documentation

lti::geometricFeatureGroup0::geometricFeatureGroup0

(

)

default constructor

lti::geometricFeatureGroup0::geometricFeatureGroup0	(	const point &	initMinX,
		const point &	initMaxX,
		const point &	initMinY,
		const point &	initMaxY,
		const int	initArea,
		const tpoint< float > &	initCog
	)

constructor

lti::geometricFeatureGroup0::geometricFeatureGroup0

(

const geometricFeatureGroup0 &

other

)

copy constructor

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Member Function Documentation

bool lti::geometricFeatureGroup0::addObjectPoint

(

point

p

)

Partially recomputes the geometric feature vector considering the new point.

This method assumes, that the center of gravity contains the sum of all added points' coordinates so far. To compute the center of gravity from the sum you must call completeComputation(). Use with care. Calls addObjectPoint(int x, int y).

bool lti::geometricFeatureGroup0::addObjectPoint	(	int	x,
		int	y
	)

Partially recomputes the geometric feature vector considering the new point.

This method assumes, that the center of gravity contains the sum of all added points' coordinates so far. To compute the center of gravity from the sum you must call completeComputation(). Use with care.

bool lti::geometricFeatureGroup0::completeComputation

(

)

Completes the computation of the geometric features, i.e.

sum attributes contain intermediate results during the computation process, which are replaced by the proper attributes value on call of this method. Use with care.

geometricFeatureGroup0& lti::geometricFeatureGroup0::copy

(

const geometricFeatureGroup0 &

other

)

copy member

Reimplemented from lti::ioObject.

bool lti::geometricFeatureGroup0::isClose	(	const geometricFeatureGroup0 &	other,
		const point &	dist
	)			const

Check whether this feature group is close to the given feature group, i.e.

if the two circumscribing rectangles overlap if one is extended by the given distance.

Parameters:

	other	the geometric features to be tested with
	dist	the allowed distance between close rectangles

Returns:

true if the two feature groups are close

bool lti::geometricFeatureGroup0::operator!=

(

const geometricFeatureGroup0 &

other

)

const

test for inequality

bool lti::geometricFeatureGroup0::operator+=

(

const geometricFeatureGroup0 &

other

)

Recomputes the geometric feature vector by adding a second geometric feature vector.

Here both feature vectors are considered complete, i.e. both center of gravities are weighted according to their area.

geometricFeatureGroup0& lti::geometricFeatureGroup0::operator=

(

const geometricFeatureGroup0 &

other

)

alias for copy

Reimplemented from lti::ioObject.

bool lti::geometricFeatureGroup0::operator==

(

const geometricFeatureGroup0 &

other

)

const

test for equality

bool lti::geometricFeatureGroup0::read	(	ioHandler &	handler,
		const bool	complete = true
	)			[virtual]

read the geometricFeatureGroup from the given ioHandler.

The complete flag indicates if the enclosing begin and end should be also be readed

Reimplemented from lti::ioObject.

bool lti::geometricFeatureGroup0::write	(	ioHandler &	handler,
		const bool	complete = true
	)

write the geometricFeatureGroup0 in the given ioHandler.

The complete flag indicates if the enclosing begin and end should be also be written or not

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Member Data Documentation

int lti::geometricFeatureGroup0::area

number of pixels covered by the object

tpoint<float> lti::geometricFeatureGroup0::cog

center of gravity

point lti::geometricFeatureGroup0::maxX

the point on the object's contour with the biggest x-coordinate

point lti::geometricFeatureGroup0::maxY

the point on the object's contour with the biggest y-coordinate

point lti::geometricFeatureGroup0::minX

the point on the object's contour with the smallest x-coordinate

point lti::geometricFeatureGroup0::minY

the point on the object's contour with the smallest y-coordinate

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

• ltiGeometricFeatureGroup.h