Abstract
Advanced developments in handheld devices’ interactive 3D graphics capabilities, processing power, and cloud computing have provided great potential for handheld augmented reality (HAR) applications, which allow users to access digital information anytime, anywhere. Nevertheless, existing interaction methods are still confined to the touch display, device camera, and built-in sensors of these handheld devices, which suffer from obtrusive interactions with AR content. Wearable fabric-based interfaces promote subtle, natural, and eyes-free interactions which are needed when performing interactions in dynamic environments. Prior studies explored the possibilities of using fabric-based wearable interfaces for head-mounted AR display (HMD) devices. The interface metaphors of HMD AR devices are inadequate for handheld AR devices as a typical HAR application require users to use only one hand to perform interactions. In this paper, we aim to investigate the use of a fabric-based wearable device as an alternative interface option for performing interactions with HAR applications. We elicited user-preferred gestures which are socially acceptable and comfortable to use for HAR devices. We also derived an interaction vocabulary of the wrist and thumb-to-index touch gestures, and present broader design guidelines for fabric-based wearable interfaces for handheld augmented reality applications.
Highlights
Augmented reality (AR) overlays computer-generated visual information—such as images, videos, text information, and 3D virtual objects—onto the real-world [1]
Unlike virtual reality (VR), which immerses the users inside a computer-generated environment, AR allows the users to see the real world with virtual objects blended within the real environment and enables the users to interact the virtual content in real-time [2]
Some of our participants’ preferred gestures in more detail as we propose design guidelines for using wearable smart textiles for handheld augmented reality (HAR) interactions and recommend the following set of suggestions to further investigate the use of fabric-based interfaces for HAR interactions
Summary
Augmented reality (AR) overlays computer-generated visual information—such as images, videos, text information, and 3D virtual objects—onto the real-world [1]. In handheld augmented reality (HAR), users can see the real world overlaid with virtual information in real-time by using the camera on their mobile devices. Each participant was given 5 min to familiarize themselves with our HAR app. In this second phase, participants were informed of the purpose of the study and primed [48]. Detailed use of the prototype was explained to all participants, such as the possible wrist and thumb-to-index touch gestures supported in our prototype, including tap and hold gestures in the two-minute-long video. We informed participants that all 27 tasks would be introduced, one by one, via our HAR app, and asked them to perform three different gestures while holding the handheld device on one hand
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