Navigation and Guidance System for the Blind - VTT
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Navigation and Guidance System for the Blind - VTT
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Research field: Machine Automation
AUTOMATION
Navigation and Guidance System for the Blind Ari Virtanen Research Scientist
24.2.2003
AUTOMATION
Visual impairment in Finland
Research field: Machine Automation
• It is estimated that in Finland there are 80.000 persons with visual impairment. 10.000 of them are classified as blind and others have low vision. Less than five percent are totally blind.
• From the 80.000 persons near 70.000 are over 65, 10.000 are of working age, not over 1.500 are children and young
• 37 % have other disability or long term illness together with visual impairment, persons with diabetes 13 %, physical disability 8 % and hearing impairment 7 %
24.2.2003
AUTOMATION
Restoring the vision • Artificial retina when optical nerve is functional • Activation of the visual cortex • Laboratory experiments
24.2.2003
Research field: Machine Automation
AUTOMATION
Mobility
• Obstacles on the route • possibility to trip over • possibility to fall down • obstacles above chest are dangerous
• Outlining the environment • What is around? • Which one is the right door?
24.2.2003
Research field: Machine Automation
AUTOMATION
Mobility
• Positioning • Where am I? • Where to go next?
• Direction • Which is the right direction? • How to keep the right direction when walking?
• Access to the visual information • What signs are nearby? 24.2.2003
• Pre-journey planning with PC • Guidance and user interface by speech • MobiC (EU-project) University of Magdeburg • GPS-Talk (Sendero Group)
• Speaking Compass • Robotron Columbus
• Systems based on artificial landmarks • RF or Infrared tags, tactile tiles 24.2.2003
Research field: Machine Automation
AUTOMATION
Solutions
Visual information
• Local infrared or radio connection
• Receiver converts signal to speech
• Useful for positioning (landmark)
• Talking Signs • Location information • Content information • Direction • Following a person • Returning to previous location 24.2.2003
Research field: Machine Automation
AUTOMATION
Comments
Research field: Machine Automation
• Continuous beeping or squealing is disturbing • Shared user interface is needed, if several devices is in use. • Accuracy of the GPS possible not adequate. Urban canyons and interiors cause problems.
• Accuracy and availability of digital maps still problem in Finland • Cost of the infrastructure (installation and maintenance) • Do You want to look like a spaceman? 24.2.2003
AUTOMATION
Research field: Machine Automation
NOPPA Navigation and Guidance System • Objectives • Easy-to-Use and affordable to the user • Flexibility, not only for preplanned routes • Possibility to use public transportation • Possibility to use public services • Applicable both indoors and outdoors • Integration of the products and services for personal navigation 24.2.2003
AUTOMATION
Pilot project (planned) • Piloting area • Arla Institute (Espoo) and its surrounding areas • Service Centre of the Finnish Federation of the Visually Impaired (near Itäkeskus, Helsinki) • Public transportation used by visually impaired in both areas
24.2.2003
Research field: Machine Automation
• Years 2002-2004 • Budget approx. 500.000 € • Participants • Arla Institute • Finnish Federation of the Visually Impaired • Ministry of Transport and Communications Finland • VTT • Universities • Tekes • Public transport operators • Municipal organisations • Finnish companies
