vpDetectorBase Class Reference

#include <visp3/detection/vpDetectorBase.h>

Inheritance diagram for vpDetectorBase:

Public Member Functions
	vpDetectorBase ()
virtual	~vpDetectorBase ()
virtual bool	detect (const vpImage< unsigned char > &I)=0
std::vector< std::vector< vpImagePoint > > &	getPolygon ()
std::vector< vpImagePoint > &	getPolygon (size_t i)
std::string &	getMessage (size_t i)
std::vector< std::string > &	getMessage ()
size_t	getNbObjects () const
vpImagePoint	getCog (size_t i) const
vpRect	getBBox (size_t i) const

Protected Attributes
std::vector< std::vector< vpImagePoint > >	m_polygon
std::vector< std::string >	m_message
size_t	m_nb_objects

Detailed Description

Base class for object detection.

This class is a generic class that can be used to detect:

• bar codes like QRcodes of Data matrices. The example given in tutorial-barcode-detector.cpp shows how to detect one or more bar codes in an image. In tutorial-barcode-detector-live.cpp you will find an other example that shows how to use this class to detect bar codes in images acquired by a camera.
• faces. An example is provided in tutorial-face-detector-live.cpp.

Examples:

tutorial-barcode-detector-live.cpp, and tutorial-barcode-detector.cpp.

Definition at line 61 of file vpDetectorBase.h.

Constructor & Destructor Documentation

vpDetectorBase::vpDetectorBase

(

)

Default constructor.

Definition at line 44 of file vpDetectorBase.cpp.

virtual vpDetectorBase::~vpDetectorBase ( )

inlinevirtual

Default destructor.

Definition at line 76 of file vpDetectorBase.h.

Member Function Documentation

virtual bool vpDetectorBase::detect ( const vpImage< unsigned char > &  I )

pure virtual

Detect objects in an image.

Parameters

I	: Image where to detect objects.

Returns

true if one or multiple objects are detected, false otherwise.

Implemented in vpDetectorQRCode, vpDetectorDataMatrixCode, and vpDetectorFace.

Examples:

tutorial-barcode-detector-live.cpp, and tutorial-barcode-detector.cpp.

vpRect vpDetectorBase::getBBox

(

size_t

i

)

const

Return the bounding box of the ith object.

Examples:

tutorial-barcode-detector-live.cpp, tutorial-barcode-detector.cpp, tutorial-face-detector-live.cpp, and tutorial-face-detector.cpp.

Definition at line 89 of file vpDetectorBase.cpp.

References m_polygon.

vpImagePoint vpDetectorBase::getCog

(

size_t

i

)

const

Return the center of gravity location of the ith object.

Definition at line 75 of file vpDetectorBase.cpp.

References m_polygon.

std::string & vpDetectorBase::getMessage

(

size_t

i

)

Returns the contained message of the ith object if there is one.

Examples:

tutorial-barcode-detector-live.cpp, tutorial-barcode-detector.cpp, tutorial-face-detector-live.cpp, and tutorial-face-detector.cpp.

Definition at line 63 of file vpDetectorBase.cpp.

References vpException::badValue, m_message, and m_polygon.

std::vector< std::string >& vpDetectorBase::getMessage ( void  )

inline

Returns the contained message of the ith object if there is one.

Definition at line 105 of file vpDetectorBase.h.

size_t vpDetectorBase::getNbObjects ( ) const

inline

Return the number of objects that are detected.

Examples:

tutorial-barcode-detector-live.cpp, tutorial-barcode-detector.cpp, tutorial-face-detector-live.cpp, and tutorial-face-detector.cpp.

Definition at line 110 of file vpDetectorBase.h.

std::vector< std::vector<vpImagePoint> >& vpDetectorBase::getPolygon ( )

inline

Returns object container box as a vector of points.

Examples:

tutorial-barcode-detector-live.cpp, tutorial-barcode-detector.cpp, tutorial-face-detector-live.cpp, and tutorial-face-detector.cpp.

Definition at line 87 of file vpDetectorBase.h.

std::vector< vpImagePoint > & vpDetectorBase::getPolygon

(

size_t

i

)

Returns ith object container box as a vector of points.

Definition at line 51 of file vpDetectorBase.cpp.

References vpException::badValue, and m_polygon.

Member Data Documentation

std::vector< std::string > vpDetectorBase::m_message

protected

Message attached to each object.

Definition at line 65 of file vpDetectorBase.h.

Referenced by vpDetectorFace::detect(), vpDetectorDataMatrixCode::detect(), vpDetectorQRCode::detect(), and getMessage().

size_t vpDetectorBase::m_nb_objects

protected

Number of detected objects.

Definition at line 66 of file vpDetectorBase.h.

Referenced by vpDetectorFace::detect(), vpDetectorDataMatrixCode::detect(), and vpDetectorQRCode::detect().

std::vector< std::vector<vpImagePoint> > vpDetectorBase::m_polygon

protected

For each object, defines the polygon that contains the object.

Definition at line 64 of file vpDetectorBase.h.

Referenced by vpDetectorFace::detect(), vpDetectorDataMatrixCode::detect(), vpDetectorQRCode::detect(), getBBox(), getCog(), getMessage(), and getPolygon().