Design and Evaluation of a Distance-Driven User Interface for Asynchronous Collaborative Exhibit Browsing in an Augmented Reality Museum

Abstract

Augmented reality museums allow visitors to jointly view and interact with exhibits. However, real-time exhibit browsing does not accommodate latecomers to museums and offers limited support to temporally separated visitors. To stimulate asynchronous exhibit browsing, we developed a distance-driven user interface that divided the augmented reality exhibit-egocentric space into four distance ranges, each having a set of social networking features and different privileges for exhibit viewing and interaction. The user interface enables asynchronous exhibit browsing for visitors participating at different times. We conducted empirical studies to evaluate how the user interface affected visitors' collaborative exhibit browsing in terms of perceived usability and learning gains. The results show that the perceived usability of the user interface is consistently high across all distance ranges. The user interface stimulates collaborative exhibit browsing with significant improvements in learning efficiency and learning attention durations, although learning satisfaction showed no difference across the participants. Implications for how the distancedriven user interface can be generalised for other interactive applications are discussed.

Mobile Augmented Reality for Low-End Devices Based on Planar Surface Recognition and Optimized Vertex Data Rendering

“…Then, the known intrinsic camera matrix M CAM is translated from a perspective projection into an OpenGL projection matrix M Proj . The view frustrum specifies the perspective projection M Persp that is then converted into normalized device coordinates NDC in the range [−1, 1] in 3 axes, according to Equation (7), which describes their inverse correlation.…”

“…Combined with adaptive data transmissions MEC technology, reduces the end-to-end latency while multiple users share AR and Mixed Reality (MR) content through the ShareAR application [6]. Such multiuser collaboration interfaces may be the response for open museums that seek a balance between interactivity and distance through AR technology [7]. In case of outdoor MAR, the fast transfer of real-world information and the location awareness complement each other.…”