Geometrical Shapes Rendering on a Dot-Matrix Display
Résumé
Using a dot-matrix display, it is possible to present geometrical
shapes with different rendering methods: solid shapes, empty shapes, vibrating
shapes, etc. An open question is then: which rendering method allows the fastest
and most reliable recognition performances using touch? This paper presents
results of a user study that we have conducted to address this question.
Using a 60*60 dot-matrix display, we asked 40 participants to recognize 6 different
geometrical shapes (square, circle, simple triangle, right triangle, diamond
and cross) within the shortest possible time. Six different methods to render
the shapes were tested depending on the rendering of shape's outline and inside:
static outline combined with static or vibrant or empty inside, and vibrating
outline combined with static or vibrant or empty inside. The results show
that squares, right triangles, and crosses are more quickly recognized than circles,
diamonds, and simple triangles. Furthermore, the best rendering method is
the one that combines static outline with empty inside.