Abstract
Haptic enhancement of touchscreens usually involves vibrating motors producing limited sensations or custom mechanical actuators that are difficult to disseminate. In this paper, we propose an alternative approach called Touchy, where a symbolic cursor is introduced under the user's finger, to evoke various haptic properties through changes in its shape and motion. This novel metaphor enables to address four different perceptual dimensions, namely: hardness, friction, fine roughness and macro roughness. Our metaphor comes with a set of seven visual effects that we compared with real texture samples within a user study conducted with 14 participants. Taken together our results show that Touchy is able to elicit clear and distinct haptic properties: stiffness, roughness, reliefs, stickiness and slipperiness.
Highlights
Enriching touchscreens with haptic content has become an active field called “surface haptics” (Chubb et al, 2010)
Pseudo-haptic feedback is an alternative approach based on the fact that haptic perception can be distorted or even overcome by another modality like vision, and not not absolutely depending on a physical actuator (Lecuyer et al, 2000)
The worse performances were the ones of the Size and the Encase effect, which might be related to the fact that in contrast with other effects, their haptic property was stored in a map
Summary
Enriching touchscreens with haptic content has become an active field called “surface haptics” (Chubb et al, 2010). Pseudo-haptic feedback is an alternative approach based on the fact that haptic perception can be distorted or even overcome by another modality like vision, and not not absolutely depending on a physical actuator (Lecuyer et al, 2000). Most contributions in this field rely on displaying a cursor with an alteration of one of its spatial property, that expresses the simulated haptic feature (Lécuyer, 2009). Pseudo-haptic principles have been used for various purposes like industrial and medical virtual training (Crison et al, 2005; Bibin et al, 2008; Li et al, 2014), improving GUI performance (Baudisch et al, 2005; Mandryk et al, 2005), or compelling perceptual experiences (Ujitoko et al, 2015)
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