Bi-Level and Anti-Aliased Rendering Methods for a Low-Resolution 2D Vibrotactile Array

We investigate rendering methods for 2D tactile arrays. We present four rendering methods, two of which are anti-aliased methods to improve display quality and smoothness. We describe three experiments to evaluate the methods. The first experiment compares them based on subjective ratings and finds that anti-aliased methods improve perceived quality and smoothness. The second experiment investigates the potential for one approach to communicate information at a sub-tactor resolution, based on the shortest line segment allowing identification of its direction. The third experiment is a shape discrimination experiment and finds that only one of the approaches allows reasonable discrimination for the selected shapes.

• Type: Conference
• Year: 2005
• Where: HAPTICS
• Authors: Christoph W. Borst, Alp V. Asutay
• Keywords: Anti-aliased Methods, HAPTICS 2005, Shortest Line Segment, Tactile Arrays, Virtual Reality