Vincent Lévesque


Adaptive Level of Detail in Dynamic, Refreshable Tactile Graphics

Vincent Lévesque, Gregory Petit, Aude Dufresne, Vincent Hayward

Proc. IEEE Haptics Symposium 2012, Vancouver, Canada, March 2012.

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We investigate gains in user appreciation and performance when the level of detail of tactile graphics is dynamically altered either at the press of a button or automatically, as a function of exploration speed. This concept was evaluated by asking 9 visually impaired participants to perform hierarchical spatial search tasks in a concert hall illustration. The tasks could be simplified by first searching for a section in a sparse illustration, and then a seat in a detailed illustration. The results show no improvement in task performance but indicate a user preference for explicitly controlling the level of details with the manual toggle.