Locomotion Assistance for the Blind

  • R. Farcy
  • Y. Bellik


We have developed a triangulating laser telemeter adapted to the space perception for the blind: the “Teletact.” Two parts compose the Teletact. The first part is a laser telemeter, which detects the distances to obstacles, and the second one is an interface, which presents these distances to the blind user. The Teletact was developed originally with a sonorous interface. Due to the long time training required by this interface we have tested some new interfaces based on other modalities (tactile and force feedback). In this chapter, we present all these interfaces and discuss them.


Force Feedback Space Perception Distance Interval Multimodal Interface Blind People 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Blash BB, Long RG (1991) Use or non-use of electronic travel aids in the united states. In: Proceedings of the 6th International Mobility Conference, Madrid, Spain, pp 49–58Google Scholar
  2. Bernsen NO (1994) Modality theory in support of multimodal Interface design. In: Proceedings of the AAAI Spring Sympoium on Intelligent Multi-Modal Systems, pp 37–44Google Scholar
  3. Damaschini R, Farcy R (1999) A space perception aid for the blind, ODIMAP II, Pavia, ItalyGoogle Scholar
  4. Farcy R, Damaschini R, Milchberg N, Sampaio E, Brenière Y (1997) Laser profilometer as a three-dimensional space perception system for the blind. In: Proceedings of Bios Europe 97, San Remo ItalyGoogle Scholar
  5. Farcy R, Damaschini R (1997) Triangulating laser profilometer as a three dimensional space perception system for the blind. Applied OpticsGoogle Scholar
  6. Jansson G (1991) The functions of present and future electronic travel aids for visually impaired children and adults. In: Proceedings of the 6th International Mobility Conference, Madrid, Spain, pp 59–64Google Scholar
  7. Kaczmarek KA, Webster JG, Bach-y-Rita P, Tompkins WJ (1991) Electrotactile and vibrotactile displays for sensory substitution systems. IEEE Transactions on Biomedical Engineering 38(1)Google Scholar
  8. Oviatt S, Cohen P, Wu LZ, Vergo J, Duncan L, Suhm B, Bers J, Holzman T, Winograd T, Landay J, Larson J, Ferro D (2000) Designing the user interface for multimodal speech and pen-based gesture applications: State-of-the-art systems and future research directions. Human-Computer Interaction 15(4): 263–322CrossRefGoogle Scholar
  9. Szeto AYJ, Saunders FA (1982) Electrocutaneous stimulation for sensory communication in rehabilitation engineering. IEEE Transactions on Biomedical Engineering BME-29(4)Google Scholar

Copyright information

© Springer-Verlag London 2002

Authors and Affiliations

  • R. Farcy
  • Y. Bellik

There are no affiliations available

Personalised recommendations