Huidong Bai

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Interaction techniques for handheld mobile Augmented Reality (AR) often focus on device-centric methods based around touch input. However, users may not be able to easily interact with virtual objects in mobile AR scenes if they are holding the handheld device with one hand and touching the screen with the other, while at the same time trying to maintain(More)
Conventional 2D touch-based interaction methods for handheld Augmented Reality (AR) cannot provide intuitive 3D interaction due to a lack of natural gesture input with real-time depth information. The goal of this research is to develop a natural interaction technique for manipulating virtual objects in 3D space on handheld AR devices. We present a novel(More)
In this paper, we present a novel gesture-based interaction method for handheld Augmented Reality (AR) implemented on a tablet with an RGB-Depth camera attached. Compared with conventional device-centric interaction methods like keypad, stylus, or touchscreen input, natural gesture-based interfaces offer a more intuitive experience for AR applications.(More)
While wearable devices have been developed that incorporate computing, sensing and display technology into a head-worn package, they often have limited input methods that might not be appropriate for natural 3D interaction which is necessary for Augmented Reality (AR) applications. In this paper we report on a prototype interface that supports natural 3D(More)
Tangible Augmented Reality (AR) interfaces use physical objects as a medium for interacting with virtual objects. In many cases, they track physical objects using computer vision techniques to attach corresponding virtual objects on them. However, when a user tries to have a closer look at the virtual content, the tracking can fail as the viewpoint gets too(More)
Light head-mounted display (HMD) combined with a 3D depth sensing camera as wearable technologies that can be used to enhance the AR experience. In this demonstration we present a scenario where the user wears Glass together with the Tango mounted on their chest to create and review 3D augmented annotations indoors. The process of creating AR annotations(More)
In this paper we present an augmented exhibition podium that supports natural free-hand 3D interaction for visitors using their own mobile phones or Smart Glasses. Visitors can point the camera of their mobile phones or Smart Glasses at the podium to see Augmented Reality (AR) content overlaid on a physical exhibit, and can also use their free-hand gestures(More)
In this paper we present an augmented exhibition podium that supports natural free-hand 3D interaction for visitors using their own mobile devices. Visitors can hold a smartphone, tablet or wear a Smart Glass, and then point the mobile camera at the podium deck to see Augmented Reality (AR) content overlaid on an exhibit on the mobile display. They can also(More)
In this paper we describe a wearable system that allows people to place and interact with 3D virtual tags placed around them. This uses two wearable technologies: a head-worn wearable computer (Google Glass) and a chest-worn depth sensor (Tango). The Google Glass is used to generate and display virtual information to the user, while the Tango is used to(More)
BACKGROUND To improve antibiotic use globally, we must deepen our understanding of the public's knowledge, attitudes and practices (KAP) concerning antibiotics. Children are frequent users of antibiotics, and their caregivers play important roles in determining how antibiotics are used. The purpose of this study was to describe caregivers' KAP in a rural(More)