ThresholdSaccadeController Class Reference

#include <Neuro/SaccadeControllers.H>

Inheritance diagram for ThresholdSaccadeController:

[legend]Collaboration diagram for ThresholdSaccadeController:

[legend]List of all members.

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Detailed Description

Threshold-limited controller that eliminates small or unreliable shifts.

ThresholdSaccadeController will issue an overt control whenever the received covert shifts are large and go to a same target for several successive covert shifts. It is hence to be used with IOR turned off, so that the covert system will keep attending to a same location for a while. Once a minimum number of covert shifts have been made that are sufficiently far from the current overt location and that are sufficiently close to each other, an overt shift will be issued, to the average location of the accumulated covert locations.

Definition at line 204 of file SaccadeControllers.H.

Public Member Functions
	ThresholdSaccadeController (OptionManager &mgr, const SaccadeBodyPart bodypart)
	Constructor.
virtual	~ThresholdSaccadeController ()
	Destructor.
virtual void	reset1 ()
	Reset ThresholdSaccadeController.
virtual void	checkPercepts (bool &areclose, Point2D< int > &avgp)
	Check queued-up percepts and return average.
Protected Member Functions
virtual void	doEvolve (SimEventQueue &q)
	evolve one time step
virtual void	computeWhenNewPercept (SimEventQueue &q)
	This method is called each time a new percept has arrived.
virtual void	computeWhenResetPos (SimEventQueue &q)
	This method is called each time a reset is made.
virtual Point2D< int >	computeWhenNewDecision (SaccadeState &sacstate, bool &blinkstate, SimEventQueue &q)
	This method is called each time a new decision is requested.
virtual void	start1 ()
	Get us started.
Protected Attributes
OModelParam< float >	itsOdist
	min overt distance
OModelParam< float >	itsCdist
	max covert distance
OModelParam< int >	itsMinNum
	min number of close covert shifts
OModelParam< bool >	itsSalWeight
	weight average covert pos by saliency
nub::ref< SpatialMetrics >	itsMetrics
	metrics that depend on input size
float	odistsq
float	cdistsq
bool	sweight
bool	didresetpos
Point2D< int >	resetloc
Friends
class	ThresholdFrictionSaccadeController

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Constructor & Destructor Documentation

ThresholdSaccadeController::ThresholdSaccadeController (  OptionManager &  mgr, const SaccadeBodyPart  bodypart )

Constructor. Parameters: part  As this controller may be used either for the eye or for the head (as part of bigger controllers that include both eye and head), this should be either SaccadeBodyPartEye or SaccadeBodyPartHead and will determine which model options we use for our internal parameters (eye or head) Definition at line 317 of file SaccadeControllers.C. References ModelComponent::addSubComponent(), and itsMetrics.

ThresholdSaccadeController::~ThresholdSaccadeController (   )  [virtual]

Destructor. Definition at line 356 of file SaccadeControllers.C.

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Member Function Documentation

void ThresholdSaccadeController::checkPercepts (  bool &  areclose, Point2D< int > &  avgp )  [virtual]

Check queued-up percepts and return average. check whether queued-up percepts are close to each other, and also return average position of percept queue Definition at line 374 of file SaccadeControllers.C. References cdistsq, SaccadeController::getPreviousPercept(), OModelParam< T >::getVal(), Point2D< T >::i, WTAwinner::isValid(), itsSalWeight, Point2D< T >::j, WTAwinner::p, Point2D< T >::squdist(), WTAwinner::sv, w, weight, and win. Referenced by computeWhenNewDecision().

Point2D< int > ThresholdSaccadeController::computeWhenNewDecision (  SaccadeState &  sacstate, bool &  blinkstate, SimEventQueue &  q )  [protected, virtual]

This method is called each time a new decision is requested. Implements SaccadeController. Definition at line 417 of file SaccadeControllers.C. References checkPercepts(), didresetpos, SaccadeController::getPreviousDecision(), SaccadeController::haveDecisions(), SaccadeController::havePercepts(), Point2D< T >::isValid(), odistsq, Point2DT::p, resetloc, SACSTATE_FIX, SACSTATE_SAC, SACSTATE_UNK, and Point2D< T >::squdist().

void ThresholdSaccadeController::computeWhenNewPercept (  SimEventQueue &  q  )  [protected, virtual]

This method is called each time a new percept has arrived. Implements SaccadeController. Definition at line 400 of file SaccadeControllers.C.

void ThresholdSaccadeController::computeWhenResetPos (  SimEventQueue &  q  )  [protected, virtual]

This method is called each time a reset is made. Implements SaccadeController. Definition at line 404 of file SaccadeControllers.C. References didresetpos, SaccadeController::getPreviousPercept(), WTAwinner::p, and resetloc.

void ThresholdSaccadeController::doEvolve (  SimEventQueue &  q  )  [protected, virtual]

evolve one time step Implements SaccadeController. Definition at line 360 of file SaccadeControllers.C.

void ThresholdSaccadeController::reset1 (   )  [virtual]

Reset ThresholdSaccadeController. See the base function in ModelComponent.H for info. Reimplemented from SaccadeController. Definition at line 364 of file SaccadeControllers.C. References didresetpos, and SaccadeController::reset1().

void ThresholdSaccadeController::start1 (   )  [protected, virtual]

Get us started. Reimplemented from SimModule. Definition at line 343 of file SaccadeControllers.C. References cdistsq, didresetpos, OModelParam< T >::getVal(), itsCdist, itsMetrics, itsMinNum, itsOdist, odistsq, SaccadeController::resetPqlen(), and SimModule::start1().

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Member Data Documentation

OModelParam<float> ThresholdSaccadeController::itsCdist [protected]

max covert distance Definition at line 259 of file SaccadeControllers.H. Referenced by start1().

nub::ref<SpatialMetrics> ThresholdSaccadeController::itsMetrics [protected]

metrics that depend on input size Definition at line 263 of file SaccadeControllers.H. Referenced by start1(), and ThresholdSaccadeController().

OModelParam<int> ThresholdSaccadeController::itsMinNum [protected]

min number of close covert shifts Definition at line 260 of file SaccadeControllers.H. Referenced by start1().

OModelParam<float> ThresholdSaccadeController::itsOdist [protected]

min overt distance Definition at line 258 of file SaccadeControllers.H. Referenced by start1().

OModelParam<bool> ThresholdSaccadeController::itsSalWeight [protected]

weight average covert pos by saliency Definition at line 261 of file SaccadeControllers.H. Referenced by checkPercepts().

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

• src/Neuro/SaccadeControllers.H
• src/Neuro/SaccadeControllers.C

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