#include <visp3/core/vpCircle.h>

Inheritance diagram for vpCircle:

Public Types
enum	vpForwardProjectionDeallocatorType { user, vpDisplayForwardProjection }

Public Member Functions
void	init ()

	vpCircle ()

	vpCircle (const vpColVector &oP)

	vpCircle (const double A, const double B, const double C, const double X0, const double Y0, const double Z0, const double R)

virtual	~vpCircle ()

void	setWorldCoordinates (const vpColVector &oP)

void	setWorldCoordinates (const double A, const double B, const double C, const double X0, const double Y0, const double Z0, const double R)

double	getA () const

double	getB () const

double	getC () const

double	getX () const

double	getY () const

double	getZ () const

double	getR () const

void	projection ()

void	projection (const vpColVector &cP, vpColVector &p)

void	changeFrame (const vpHomogeneousMatrix &cMo, vpColVector &cP)

void	changeFrame (const vpHomogeneousMatrix &cMo)

void	display (const vpImage< unsigned char > &I, const vpCameraParameters &cam, const vpColor &color=vpColor::green, const unsigned int thickness=1)

void	display (const vpImage< unsigned char > &I, const vpHomogeneousMatrix &cMo, const vpCameraParameters &cam, const vpColor &color=vpColor::green, const unsigned int thickness=1)

vpCircle *	duplicate () const

void	project ()

void	project (const vpHomogeneousMatrix &cMo)

void	track (const vpHomogeneousMatrix &cMo)

virtual void	print () const

void	setDeallocate (vpForwardProjectionDeallocatorType d)

vpForwardProjectionDeallocatorType	getDeallocate ()

Static Public Member Functions
static void	computeIntersectionPoint (const vpCircle &circle, const vpCameraParameters &cam, const double &rho, const double &theta, double &i, double &j)

Public Attributes
vpColVector	oP

vpColVector	p

vpColVector	cP

bool	cPAvailable

Detailed Description

Class that defines what is a circle.

Examples:: manGeometricFeatures.cpp, servoSimuCircle2DCamVelocity.cpp, servoSimuCircle2DCamVelocityDisplay.cpp, simulateCircle2DCamVelocity.cpp, and testPoseFeatures.cpp.

Definition at line 57 of file vpCircle.h.

Member Enumeration Documentation

enum vpForwardProjection::vpForwardProjectionDeallocatorType

inherited

Used for memory issue especially in the vpServo class.

Enumerator
user
vpDisplayForwardProjection

Definition at line 215 of file vpForwardProjection.h.

Constructor & Destructor Documentation

vpCircle::vpCircle ( )

Definition at line 95 of file vpCircle.cpp.

References init().

Referenced by duplicate().

vpCircle::vpCircle ( const vpColVector & oP_ )

Construct the circle from the intersection of a plane and a sphere.

Parameters

oP_	: oP[0], oP[1], oP[2] correspond to A, B, C from the plane equation Ax + By + Cz = 0. oP[3], oP[4], oP[5] correspond to X, Y, Z the coordinates of the center of the sphere. oP[6] corresponds to the radius of the sphere.

See also: setWorldCoordinates()

Definition at line 109 of file vpCircle.cpp.

References init(), and setWorldCoordinates().

vpCircle::vpCircle	(	const double	A,
		const double	B,
		const double	C,
		const double	X0,
		const double	Y0,
		const double	Z0,
		const double	R
	)

Construct the circle from the intersection of a plane and a sphere.

Parameters

A	: A from the plane equation Ax + By + Cz = 0.
B	: B from the plane equation Ax + By + Cz = 0.
C	: C from the plane equation Ax + By + Cz = 0.
X0	: X Coordinate of the center of the sphere.
Y0	: Y Coordinate of the center of the sphere.
Z0	: Z Coordinate of the center of the sphere.
R	: Radius of the sphere.

See also: setWorldCoordinates()

Definition at line 128 of file vpCircle.cpp.

References init(), and setWorldCoordinates().

vpCircle::~vpCircle ( )

virtual

Definition at line 140 of file vpCircle.cpp.

Member Function Documentation

void vpCircle::changeFrame	(	const vpHomogeneousMatrix &	cMo,
		vpColVector &	cP
	)

virtual

perspective projection of the circle

Implements vpForwardProjection.

Definition at line 269 of file vpCircle.cpp.

References vpForwardProjection::oP.

Referenced by vpMbtDistanceCircle::computeInteractionMatrixError(), vpMbtDistanceCylinder::computeInteractionMatrixError(), display(), vpMbtDistanceCircle::display(), vpMbtDistanceKltCylinder::display(), vpMbtDistanceCylinder::display(), vpMbtDistanceCircle::initMovingEdge(), vpMbtDistanceCylinder::initMovingEdge(), vpMbtDistanceCircle::updateMovingEdge(), and vpMbtDistanceCylinder::updateMovingEdge().

void vpCircle::changeFrame ( const vpHomogeneousMatrix & cMo )

virtual

perspective projection of the circle

Implements vpForwardProjection.

Definition at line 299 of file vpCircle.cpp.

References vpTracker::cP, and vpForwardProjection::oP.

void vpCircle::computeIntersectionPoint	(	const vpCircle &	circle,
		const vpCameraParameters &	cam,
		const double &	rho,
		const double &	theta,
		double &	i,
		double &	j
	)

static

Computes the coordinates of the point corresponding to the intersection between a circle and a line.

Warning: This functions assumes changeFrame() and projection() have already been called.

See also: changeFrame(), projection()

Parameters

circle	: Circle to consider for the intersection.
cam	: Camera parameters that have to be used for the intersection computation.
rho	: The rho parameter of the line.
theta	: The theta parameter of the line.
i	: resulting i-coordinate of the intersection point.
j	: resulting j-coordinate of the intersection point.

Definition at line 373 of file vpCircle.cpp.

References vpCameraParameters::get_px(), vpCameraParameters::get_py(), vpCameraParameters::get_u0(), vpCameraParameters::get_v0(), vpTracker::p, and vpMath::sqr().

Referenced by vpMbtDistanceKltCylinder::display(), vpMbtDistanceCylinder::display(), vpMbtDistanceCylinder::initMovingEdge(), and vpMbtDistanceCylinder::updateMovingEdge().

void vpCircle::display	(	const vpImage< unsigned char > &	I,
		const vpCameraParameters &	cam,
		const vpColor &	color = `vpColor::green`,
		const unsigned int	thickness = `1`
	)

virtual

Displays the feature in the image I thanks to the 2D feature parameters in the image plane (vpTracker::p) and the camera parameters which enable to convert the features from meter to pixel.

Parameters

I	: The image where the feature must be displayed in overlay.
cam	: The camera parameters to enable the conversion from meter to pixel.
color	: The desired color to display the line in the image.
thickness	: Thickness of the feature representation.

Implements vpForwardProjection.

Examples:: manGeometricFeatures.cpp.

Definition at line 327 of file vpCircle.cpp.

References vpFeatureDisplay::displayEllipse(), and vpTracker::p.

void vpCircle::display	(	const vpImage< unsigned char > &	I,
		const vpHomogeneousMatrix &	cMo,
		const vpCameraParameters &	cam,
		const vpColor &	color = `vpColor::green`,
		const unsigned int	thickness = `1`
	)

virtual

Displays the feature in the image I thanks to the features in the object frame (vpForwardProjection::oP), the homogeneous matrix relative to the pose between the object frame and the camera frame and the camera parameters which enable to convert the features from meter to pixel.

Parameters

I	: The image where the line must be displayed in overlay.
cMo	: The homogeneous matrix corresponding to the pose between the camera frame and the object frame.
cam	: The camera parameters to enable the conversion from meter to pixel.
color	: The desired color to display the line in the image.
thickness	: Thickness of the feature representation.

Implements vpForwardProjection.

Definition at line 337 of file vpCircle.cpp.

References changeFrame(), vpFeatureDisplay::displayEllipse(), and projection().

vpCircle * vpCircle::duplicate ( ) const

virtual

for memory issue (used by the vpServo class only)

Implements vpForwardProjection.

Definition at line 351 of file vpCircle.cpp.

References vpCircle().

double vpCircle::getA ( ) const

inline

Definition at line 79 of file vpCircle.h.

double vpCircle::getB ( ) const

inline

Definition at line 80 of file vpCircle.h.

double vpCircle::getC ( ) const

inline

Definition at line 81 of file vpCircle.h.

vpForwardProjectionDeallocatorType vpForwardProjection::getDeallocate ( )

inlineinherited

Definition at line 227 of file vpForwardProjection.h.

double vpCircle::getR ( ) const

inline

Definition at line 87 of file vpCircle.h.

double vpCircle::getX ( ) const

inline

Definition at line 83 of file vpCircle.h.

double vpCircle::getY ( ) const

inline

Definition at line 84 of file vpCircle.h.

double vpCircle::getZ ( ) const

inline

Definition at line 85 of file vpCircle.h.

void vpCircle::init ( )

virtual

Default initialisation of the feature parameters:

in the object frame: oP
in the camera frame: cP
in the image plane: p.

Implements vpForwardProjection.

Definition at line 44 of file vpCircle.cpp.

References vpTracker::cP, vpForwardProjection::oP, vpTracker::p, and vpColVector::resize().

Referenced by vpCircle().

void vpForwardProjection::print ( ) const

virtualinherited

Print to stdout the feature parameters in:

the object frame
the camera frame
the image plane.

Examples:: servoSimuCircle2DCamVelocityDisplay.cpp, servoSimuLine2DCamVelocityDisplay.cpp, and servoSimuSquareLine2DCamVelocityDisplay.cpp.

Definition at line 59 of file vpForwardProjection.cpp.

References vpTracker::cP, vpForwardProjection::oP, vpTracker::p, and vpColVector::t().

void vpForwardProjection::project ( )

inherited

Compute the feature parameters in the image plane (vpTracker::p) from the parameters in the camera frame (vpTracker::cP).

Warning: Be careful to update vpTracker::p and vpTracker::cP public attributes before the call of this method.

Examples:: homographyHartleyDLT2DObject.cpp, homographyHLM2DObject.cpp, homographyHLM3DObject.cpp, manGeometricFeatures.cpp, manServo4PointsDisplay.cpp, manSimu4Points.cpp, servoAfma62DhalfCamVelocity.cpp, servoAfma6Cylinder2DCamVelocity.cpp, servoAfma6Cylinder2DCamVelocitySecondaryTask.cpp, servoAfma6Line2DCamVelocity.cpp, servoAfma6SquareLines2DCamVelocity.cpp, servoAfma6TwoLines2DCamVelocity.cpp, servoPioneerPanSegment3D.cpp, simulateFourPoints2DPolarCamVelocity.cpp, testFeatureSegment.cpp, testFindMatch.cpp, testPose.cpp, and testPoseFeatures.cpp.

Definition at line 75 of file vpForwardProjection.cpp.

References vpTracker::cP, vpTracker::p, and vpForwardProjection::projection().

Referenced by vpMbtDistanceKltCylinder::computeInteractionMatrixAndResidu(), vpMbTracker::getPolygonFaces(), vpKeyPoint::matchPointAndDetect(), and vpForwardProjection::track().

void vpForwardProjection::project ( const vpHomogeneousMatrix & cMo )

inherited

Compute the feature parameters in the camera frame (vpTracker::cP) and than compute the projection of these parameters in the image plane (vpTracker::p).

Warning: The feature parameters in the object frame (vpForwardProjection:oP) need to be set prior the use of this method. To initialize these parameters see setWorldCoordinates().

Parameters

cMo	: The homogeneous matrix corresponding to the pose between the camera frame and the object frame.

Definition at line 95 of file vpForwardProjection.cpp.

References vpForwardProjection::changeFrame(), vpForwardProjection::projection(), and vpERROR_TRACE.

void vpCircle::projection ( )

virtual

Perspective projection of the circle.

From the 3D parameters of the circle in the camera frame available in cP, computes the 2D parameters of the ellipse resulting from the perspective projection in the image plane. Those 2D parameters are available in p vector.

See vpCircle::projection(const vpColVector &, vpColVector &) for a more detailed description of the parameters.

Implements vpForwardProjection.

Definition at line 155 of file vpCircle.cpp.

References vpTracker::cP, and vpTracker::p.

Referenced by vpMbtDistanceCircle::computeInteractionMatrixError(), vpMbtDistanceCylinder::computeInteractionMatrixError(), display(), vpMbtDistanceCircle::display(), vpMbtDistanceKltCylinder::display(), vpMbtDistanceCylinder::display(), vpMbtDistanceCircle::initMovingEdge(), vpMbtDistanceCylinder::initMovingEdge(), vpMbtDistanceCircle::updateMovingEdge(), and vpMbtDistanceCylinder::updateMovingEdge().

void vpCircle::projection	(	const vpColVector &	cP_,
		vpColVector &	p_
	)

virtual

Perspective projection of the circle.

Parameters

cP_	3D cercle input parameters. This vector is of dimension 7. It contains the following parameters: A, B, C, X0, Y0, Z0, r where A,B,C are the parameters of the plane with equation Ax+By+Cz+D=0 containing the circle X0,Y0,Z0 are the 3D coordinates of the cercle in the camera frame r is the circle radius.
p_	2D circle output parameters. This is a 5 dimension vector. It contains the following parameters: xc, yc, m20, m11, m02 where: xc,yc are the normalized coordinates of the center of the ellipse (ie the perspective projection of a 3D circle becomes a 2D ellipse in the image) in the image plane. mu20,mu11,mu02 are the second order centered moments of the ellipse.

Implements vpForwardProjection.

Definition at line 173 of file vpCircle.cpp.

References vpException::divideByZeroError, vpMath::sqr(), and vpERROR_TRACE.

void vpForwardProjection::setDeallocate ( vpForwardProjectionDeallocatorType d )

inlineinherited

Definition at line 226 of file vpForwardProjection.h.

void vpCircle::setWorldCoordinates ( const vpColVector & oP_ )

virtual

Set the world coordinates of the circle from the intersection of a plane and a sphere. We mean here the coordinates of the circle in the object frame

Parameters

oP_	: oP[0], oP[1], oP[2] correspond to A, B, C from the plane equation Ax + By + Cz = 0. oP[3], oP[4], oP[5] correspond to X, Y, Z the coordinates of the center of the sphere. oP[6] corresponds to the radius of the sphere.

Implements vpForwardProjection.

Examples:: manGeometricFeatures.cpp, servoSimuCircle2DCamVelocity.cpp, servoSimuCircle2DCamVelocityDisplay.cpp, simulateCircle2DCamVelocity.cpp, and testPoseFeatures.cpp.

Definition at line 62 of file vpCircle.cpp.

References vpForwardProjection::oP.

Referenced by vpMbtDistanceCircle::buildFrom(), vpMbtDistanceKltCylinder::buildFrom(), vpMbtDistanceCylinder::buildFrom(), and vpCircle().

void vpCircle::setWorldCoordinates	(	const double	A,
		const double	B,
		const double	C,
		const double	X0,
		const double	Y0,
		const double	Z0,
		const double	R
	)

Set the world coordinates of the circle from the intersection of a plane and a sphere. We mean here the coordinates of the circle in the object frame

Parameters

A	: A from the plane equation Ax + By + Cz = 0.
B	: B from the plane equation Ax + By + Cz = 0.
C	: C from the plane equation Ax + By + Cz = 0.
X0	: X Coordinate of the center of the sphere.
Y0	: Y Coordinate of the center of the sphere.
Z0	: Z Coordinate of the center of the sphere.
R	: Radius of the sphere.

Definition at line 80 of file vpCircle.cpp.

References vpForwardProjection::oP.

void vpForwardProjection::track ( const vpHomogeneousMatrix & cMo )

inherited

Track the feature parameters in the camera frame (vpTracker::cP) and than compute the projection of these parameters in the image plane (vpTracker::p).

This method is similar to project(const vpHomogeneousMatrix &).

Warning: The feature parameters in the object frame (vpForwardProjection:oP) need to be set prior the use of this method. To initialize these parameters see setWorldCoordinates().

Parameters