Influence of visual and haptic delays on stiffness perception in augmented reality

• Published in: 2009 8th IEEE International Symposium on Mixed and Augmented Reality pp. 49 - 52
• Main Authors: Knorlein, B., Di Luca, M., Harders, M.
• Format: Conference Proceeding
• Language: English
• Published: Washington, DC, USA IEEE Computer Society 01.10.2009; IEEE
• Series: ACM Other Conferences
• Subjects: Augmented reality; Cameras; Computer vision; Computing methodologies; Computing methodologies > Computer graphics; Computing methodologies > Computer graphics > Graphics systems and interfaces; Computing methodologies > Computer graphics > Graphics systems and interfaces > Virtual reality; delay; Delay effects; Displays; Feedback; haptic; Haptic interfaces; Human-centered computing; Human-centered computing > Human computer interaction (HCI); Human-centered computing > Human computer interaction (HCI) > Interaction devices; Human-centered computing > Human computer interaction (HCI) > Interaction devices > Haptic devices; Human-centered computing > Human computer interaction (HCI) > Interaction paradigms; Human-centered computing > Human computer interaction (HCI) > Interaction paradigms > Mixed > augmented reality; Human-centered computing > Human computer interaction (HCI) > Interaction paradigms > Virtual reality; Laboratories; multimodal; Rendering (computer graphics); Synchronization; user evaluation
• ISBN: 9781424453900; 1424453909
• DOI: 10.1109/ISMAR.2009.5336501

Visual delays are unavoidable in augmented reality setups and occur in different steps of the rendering pipeline. In the context of haptic interaction with virtual objects, it has been shown that delayed force feedback can alter the perception of object stiffness. We hypothesize that delays in augmented reality systems can have similar consequences. To test this, we carried out a user study to investigate the effect of visual and haptic delays on the perception of stiffness. The experiment has been performed in an optimized visuo-haptic augmented reality setup, which allows to artificially manipulate delays during visual and haptic rendering. In line with previous results, delays for haptic feedback resulted in decreased perceived stiffness. In contrast, visual delays caused an increase in perceived stiffness. However, the simultaneous occurrence of delays in both sensory channels led to a partial compensation of these effects. This could potentially help to correct stiffness perception of virtual objects in visuo-haptic augmented reality systems.