(a) When the user is looking in the direction of minimized virtual content, we propose five interaction techniques to activate the virtual information: (b) Fixation-Glance, in which users converge their gaze at the depth of the content; (c) Head-Depth; in which users lean backward three centimeters; (d) Hand-Overlay, in which users put their hand slightly behind the virtual content; (e) Blink; in which users blink the eye twice within one second; and (f) Dwell: in which users maintain their gaze on the virtual content for one second.
We evaluated the five interfaces under two task contexts: (a) the sitting context, in which participants were asked to sit in front of a desktop computer and access information in the real-world sticky notes or the AR widgets; (b) the walking context, in which participants were asked to walk indoor and obtain information in the real-world signs or the AR widgets.
11 pages, ACM. DOI: https://doi.org/10.1145/3485279.3485286