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 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)
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)
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)
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)