What we did:We conducted a systematic evaluation of the ergonomics of rotational mid-air interactions in Augmented Reality environments through a controlled experiment with 19 participants.
What we found:We found that close-to-body interactions significantly improve user comfort and accuracy, particularly in seated positions, while rotations around the upper axis reduce the number of required interactions.
Takeaway:Our findings highlight the importance of ergonomic considerations in the design of Augmented Reality interfaces to enhance user experience and minimize discomfort.
Abstract
Mid-air gestures, widely used in today’s Augmented Reality (AR) applications, are prone to the “gorilla arm” effect, leading to discomfort with prolonged interactions. While prior work has proposed metrics to quantify this effect and means to improve comfort and ergonomics, these works usually only consider simplistic, one-dimensional AR interactions, like reaching for a point or pushing a button. However, interacting with AR environments also involves far more complex tasks, such as rotational knobs, potentially impacting ergonomics. This paper advances the understanding of the ergonomics of rotational mid-air interactions in AR. For this, we contribute the results of a controlled experiment exposing the participants to a rotational task in the interaction space defined by their arms’ reach. Based on the results, we discuss how novel future mid-air gesture modalities benefit from our findings concerning ergonomic-aware rotational interaction.
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