V. CONCLUSION.
This paper has proposed a new approach to design
navigation tools for the visually impaired and blind people.
The novelty of the proposed approach comes from the
interaction between user and environment in order to build
its representation.
In order to validate the proposed approach we have built
the new system named Intelligent Glasses and used touch
stimulating device VITAL. Experiments involving 10
voluntary blindfolded naive subjects were carried out. All
experiments lead to the conclusion that it is possible to avoid
obstacles with a tactile interface.
However, many questions, theoretical and experimental,
have raised. Which geometry is used, thus should be
implemented, on a tactile device (Euclidean? Riemannian?);
what visual cues are really pertinent during the navigation?
how to improve the space representation precision?
Moreover, several questions related to practical usage of
Intelligent Glasses are still pendent.