vpMomentArea Class Reference

#include <vpMomentArea.h>

Inheritance diagram for vpMomentArea:

Public Member Functions
	vpMomentArea ()
void	compute ()
const char *	name ()
vpMomentObject &	getObject () const
std::vector< double > &	get ()
void	linkTo (vpMomentDatabase &moments)
void	update (vpMomentObject &object)

Protected Member Functions
vpMomentDatabase &	getMoments ()

Protected Attributes
std::vector< double >	values

Friends
VISP_EXPORT std::ostream &	operator<< (std::ostream &os, const vpMomentArea &m)

Detailed Description

Class handling the surface moment.

Definition at line 57 of file vpMomentArea.h.

Constructor & Destructor Documentation

vpMomentArea::vpMomentArea

(

)

Default constructor.

Definition at line 70 of file vpMomentArea.cpp.

References vpMoment::values.

Member Function Documentation

void vpMomentArea::compute ( )

virtual

Has the area . Gets the value of m00 from vpMomentCentered.

Implements vpMoment.

Definition at line 51 of file vpMomentArea.cpp.

References vpMomentObject::DISCRETE, vpMomentCentered::get(), vpMomentDatabase::get(), vpMomentObject::get(), vpMoment::getMoments(), vpMoment::getObject(), vpException::notInitialized, and vpMoment::values.

Referenced by vpMomentCommon::updateAll().

std::vector<double>& vpMoment::get ( )

inlineinherited

Returns all values computed by the moment.

Returns

vector of values

Definition at line 125 of file vpMoment.h.

Referenced by vpMomentGravityCenterNormalized::compute(), vpFeatureMomentArea::compute_interaction(), vpFeatureMomentAreaNormalized::compute_interaction(), vpFeatureMomentGravityCenterNormalized::compute_interaction(), vpMomentCentered::get(), vpFeatureMoment::init(), and vpFeatureMoment::update().

vpMomentDatabase& vpMoment::getMoments ( )

inlineprotectedinherited

Returns the linked moment database.

Returns

the moment database

Definition at line 115 of file vpMoment.h.

Referenced by compute(), vpMomentGravityCenterNormalized::compute(), vpMomentCentered::compute(), vpMomentAreaNormalized::compute(), vpMomentCInvariant::compute(), and vpMomentAlpha::compute().

vpMomentObject& vpMoment::getObject ( ) const

inlineinherited

Definition at line 119 of file vpMoment.h.

Referenced by compute(), vpMomentCentered::compute(), vpMomentGravityCenter::compute(), vpMomentAreaNormalized::compute(), vpMomentCInvariant::compute(), vpFeatureMomentArea::compute_interaction(), vpFeatureMomentBasic::compute_interaction(), vpFeatureMomentCentered::compute_interaction(), vpFeatureMomentAlpha::compute_interaction(), vpFeatureMomentAreaNormalized::compute_interaction(), vpFeatureMomentCInvariant::compute_interaction(), vpFeatureMomentGravityCenter::compute_interaction(), vpFeatureMomentGravityCenterNormalized::compute_interaction(), vpMomentBasic::get(), vpMomentCentered::get(), vpFeatureMomentBasic::interaction(), and vpFeatureMomentCentered::interaction().

void vpMoment::linkTo ( vpMomentDatabase &  moments )

inherited

Links the moment to a database of moment primitives. If the moment depends on other moments, these moments must be linked to the same database.

Attention

Two moments of the same class cannot be stored in the same database

#include <visp/vpMomentObject.h>
#include <visp/vpPoint.h>
#include <visp/vpMomentGravityCenter.h>
#include <visp/vpMomentDatabase.h>
#include <visp/vpMomentCentered.h>

int main()
{
  vpPoint p;
  std::vector<vpPoint> vec_p;

  p.set_x(1); p.set_y(1); // coordinates in meters in the image plane (vertex 1)
  vec_p.push_back(p);
  p.set_x(2); p.set_y(2); // coordinates in meters in the image plane (vertex 2)

  vpMomentObject obj(2);
  obj.setType(vpMomentObject::DISCRETE); // Discrete mode.
  obj.fromVector(vec_p); // Init the dense object with the polygon

  vpMomentDatabase db;
  vpMomentGravityCenter G; // declaration of gravity center
  vpMomentCentered mc; // mc containts centered moments

  G.linkTo(db); //add gravity center to database
  mc.linkTo(db); //centered moments depend on gravity, add them to the
                 //database to grant access

  G.update(obj); // specify the object for gravity center
  mc.update(obj); // and for centered moments

  G.compute(); // compute the moment
  mc.compute(); //compute centered moments AFTER gravity center

  return 0;
}

Parameters

moments

: database of moment primitives.

Definition at line 104 of file vpMoment.cpp.

References vpMoment::name().

Referenced by vpMomentCommon::getAlpha(), vpMomentCommon::getMu3(), vpMomentCommon::getSurface(), and vpMomentCommon::vpMomentCommon().

const char* vpMomentArea::name ( )

inlinevirtual

Moment name.

Implements vpMoment.

Definition at line 64 of file vpMomentArea.h.

void vpMoment::update ( vpMomentObject &  object )

inherited

Updates the moment with the current object. This does not compute any values.

Parameters

object

: object descriptor of the current camera vision.

Definition at line 117 of file vpMoment.cpp.

Friends And Related Function Documentation

VISP_EXPORT std::ostream& operator<< ( std::ostream &  os, const vpMomentArea &  m  )

friend

Outputs the moment's values to a stream.

Definition at line 77 of file vpMomentArea.cpp.

Member Data Documentation

std::vector<double> vpMoment::values

protectedinherited

Definition at line 110 of file vpMoment.h.

Referenced by compute(), vpMomentGravityCenterNormalized::compute(), vpMomentCentered::compute(), vpMomentGravityCenter::compute(), vpMomentAreaNormalized::compute(), vpMomentCInvariant::compute(), vpMomentAlpha::compute(), vpMomentCentered::get(), vpMomentGravityCenter::get(), vpMomentAlpha::vpMomentAlpha(), vpMomentArea(), vpMomentAreaNormalized::vpMomentAreaNormalized(), vpMomentCInvariant::vpMomentCInvariant(), and vpMomentGravityCenter::vpMomentGravityCenter().