Laboratoire d'Informatique Industrielle

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Laboratory of Software Ingeneering Li2, EA 2215
UBO/ENIB, BREST, FRANCE
Research Group in Informatics and
Cognition GRESICO, UBS/IUP, VANNES, FRANCE
Autonomy and Proactive Perception for Virtual
Actors
Marc Parenthoën, Jacques Tisseau, Thierry
Morineau
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VR History
in virtuo
presence
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Plan

• Autonomy by Conviction

Principle of autonomy for behovioral model

• Affordance-Based FCM

Behavior specification and control

• Virtual Proactive Perception

Simulation, active perception and prediction

• Implementation of a Virtual Skipper

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Exploitation of Models
what IS the model
what does the model DO
Animation
Simulation
Model
Modelling
What BECOMES of the model
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User Status
cre-actor
actor
spectator
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Towards Intrinsic Autonomous Models

• Deficiencies
• sensorial
• motor
• mental

• Abilities
• of perception
• of action
• of decision

• Autonomy
• of execution

? loss of autonomy
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Multi-Agent Systems

• Numerical model
• descriptive
• causal
• behavioral

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Participative Multi-Agent Systems

• VOWELS
• Agent
• Environment
• Interaction
• Organisation

• extended VOWELS
• User

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Behavioral Modelling
FCMs Kosko86

• specify

• control

• model perception

Dynamics
Decision
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Plan

• Autonomy by Conviction

• Affordance-Based FCM

• Virtual Proactive Perception

• Implementation of a Virtual Skipper

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Psychological Model of Activity
Affordances Gibson77

• environment-tool-agent

attractive or repulsive effect

• absolute value

sensationFuzzyfication(sensors)

• relative value

accessibility level (perceptual/motor)

• selection via FCM

perceptionDynamics(FCM)
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Affordance-Based FCM Construction

• conceptsaffordances

given by expert

• extern activationabsolute value

virtual sensors fuzzy rules

• selection via FCM

perceptiondynamics(FCM)

• strategy of trajectory

associated with selected affordance
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Plan

• Autonomy by Conviction

• Affordance-Based FCM

• Virtual Proactive Perception

• Implementation of a Virtual Skipper

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Active Perception Berthoz 88
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Virtual Proactive Perception
active perception, anticipation, simulation and
learning
simulation in the simulation
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Plan

• Autonomy by Conviction

• Affordance-Based FCM

• Virtual Proactive Perception

• Implementation of a Virtual Skipper

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Affordance-Based FCMs Construction
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Human and Virtual Helmsmans

• associated to each affordance,
• part of strategy

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European Center of Virtual Reality(CERV)
Brest, september 2003
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Laboratory of Software Ingeneering Li2, EA 2215
UBO/ENIB, BREST, FRANCE
Research Group in Informatics and
Cognition GRESICO, UBS/IUP, VANNES, FRANCE
Autonomy and Proactive Perception for Virtual
Actors
Marc Parenthoën, Jacques Tisseau, Thierry
Morineau