Embed Size (px)
DESCRIPTION
Adaptive Child Pedestrian Safety Training in VR
Citation preview
SafeChildAdaptive Child Pedestrian Training in a Virtual Reality Setting
Yecheng Gu
Motivation
• Children endangered group in traffic.• A major cause: unsafe roadside behavior.
– Safety education is important!
• But: Safety education ineffective without roadside training !
[1]
Motivation
• Problems of roadside training– Time and personnel
intensive, dangerous, expensive …
• Promising Solution: VR training !– Shown to be successful
– Existing systems: • Still personnel intensive.
• Strongly restricted learning environments.
[2]
http://fks.schwerte.de/Bilder/Schulleben%20bis%202011/Sicherheitstraining_2.jpg
SafeChild:
Real city model + ITS + Smartphone
Setup of Technology
VR Simulation
Intelligent Tutoring System
Hardware
PentAI + Smartphone + Navigationdevice(Wiimote?)
Video Kinect+Wiimote
MS Kinect:head- bodytracking
Smartphone:navigation info
Nintendo Wiimotemovement
SimulationFree walkable virtual city with Traffic simulation (xaitement) and 3D models of Saarbrücken (Vermessungsamt)
Vision …
GTA 4 Rockstar (2008) (Screenshot by IGN.com)
Pedagogical Agent
• ITS for Virtual Learning Environments.
• Expansion of existing VLEs.
• Goals:
– Student Modelling
– Content Adaptation
Student Modelling
• Track learners safety knowledge and skills• Detect unsafe behavior and determine causes• 2 Step Approach:
VR Simulatio
n
Extraction of relevant
information
High level reasoning
Student Model
Step 1: Step 2:
Relevantinformation
history
Domain knowledge
Pedagogicalknowledge
Content Adaptation
• Environment
– Traffic, distractions, …
• Instruction/Feedback
– Level of detail, frequency …
• Exercises
– Observation, Street Crossing, Navigation …
PA Example Flow
Choose training stageChoose exerciseAdapt difficulty
Adapt instructions
Extract relevant information
Analyze actionsUpdate student model
Adapt feedback
Pre training
In training
After training
Simulation
Request exercise
Submit exercise and instructions
Raw information
Submit feedback
Pedagogical Agent
Sources
• [1] Training Objectives : M. Limbourg and D. Gerber. A parent training program for the road safety ed- ucation of preschool children. Accident Analysis & Prevention, 13(3):255–267, 1981.
• [2] Photograph of a child participating in the virtual environment scenario: D.C. Schwebel, J. Gaines, and J. Severson. Validation of virtual reality as a tool to understand and prevent child pedestrian injury. Accident Analysis & Prevention, 40(4):1394–1400, 2008.
