gml_TTrackedObject Class Reference

#include <gml_TrackedObject.h>

Collaboration diagram for gml_TTrackedObject:

Detailed Description

Representation of objects tracked in 2D by the gml_TTracker class.


Public Types
enum	State { Born, Alive, Zombie, Dead }
	Internal tracking state of a tracked object. More...
Public Member Functions
gml_TError	Init (gml_TPointFloat object, gml_TTrackingEventQueue *queue, UInt64 startDelay=sDefaultStartDelay(), UInt64 ttlDelay=sDefaultTTLDelay(), Float32 stability=sDefaultStaticStability())
	Setup tracked object data.
void	Dispose (UInt64 time)
gml_TError	Update (bool detected, UInt64 gap, UInt64 time, gml_TPointFloat *object)
	Update object's state and (eventually) generate events.
State	GetState ()
	Return the current state of the tracked object.
Static Public Member Functions
static UInt64	sDefaultStartDelay ()
	default for fStartDelay
static UInt64	sDefaultTTLDelay ()
	default for fTTLDelay
static Float32	sDefaultStaticStability ()
	default for fStaticStability
Static Public Attributes
static gml_TError	sErrorBadState = (gml_TError)-1
Static Protected Member Functions
static void	ClassInit ()
	class setup
Protected Attributes
UInt32	fIdentity
	UID of the object.
UInt64	fLifeTime
	time since the object was born (relevant while in Born state)
UInt64	fTimeToLive
	remaining lifetime of the object (relevant while in Zombie state)
State	fState
	current object state
UInt64	fStartDelay
	time after which a consistently detected object will be tracked (nanoseconds). < i.e. delay for the Born -> Alive transition
UInt64	fTTLDelay
	time after which an object will die if undetected (nanoseconds). < i.e. delay for the Zombie -> Dead transition
Float32	fStaticStability
	threshold under which object motion is discarded (pixels).
gml_TTrackingEventQueue *	fQueue
Static Protected Attributes
static bool	sModuleInited = false
	was ClassInit() called ?

Member Enumeration Documentation

enum State

Internal tracking state of a tracked object.

Possible state transitions:

               .-> Alive <--> Zombie -,
         Born -|                      |-> Dead
               '----------------------'

Enumerator:

Born	the object was recently detected
Alive	the object was consistently detected and is tracked
Zombie	the object wasn't detected, and might be either gone or missed
Dead	the object is not to be tracked anymore

Member Function Documentation

gml_TError Init	(	gml_TPointFloat	object,
		gml_TTrackingEventQueue *	queue,
		UInt64	startDelay = `sDefaultStartDelay()`,
		UInt64	ttlDelay = `sDefaultTTLDelay()`,
		Float32	stability = `sDefaultStaticStability()`
	)

Setup tracked object data.

Parameters:

queue	where to push the events
startDelay	see fStartDelay
ttlDelay	see fTTLDelay
stability	see fStaticStability

void Dispose ( UInt64 time )

Bug:: possibly, need to test for errors here

gml_TError Update	(	bool	detected,
		UInt64	gap,
		UInt64	time,
		gml_TPointFloat *	object
	)

Update object's state and (eventually) generate events.

Parameters:

detected	was the object detected ?
gap	since when (in nanoseconds) ?
time	the current timestamp (nanoseconds)
object	the current object position (or NULL)

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

vision/gml_TrackedObject.h
vision/gml_TrackedObject.cc

gml_TTrackedObject Class Reference

Detailed Description

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Static Protected Member Functions

Protected Attributes

Static Protected Attributes

Member Enumeration Documentation

Member Function Documentation