Classifying Different Types of Augmented Reality Technology

Augmented reality (AR) is defined as "...a live direct or an indirect view of a physical, real-world environment whose elements are augmented by computer-generated sensory input..." [1]. AR is often considered a type of virtual reality (VR), but could also be considered two distinct technologies and be classified separately. Furthermore, applications referred to as AR can be distinct from one another and it is useful to define different categories and types. This paper identifies Triggered AR technologies, which include four types: Marker-based, Location-based, Dynamic Augmentation, and Complex Augmentation. View-based AR is also discussed, which includes Indirect Augmentation and Nonspecific Digital Augmentation. Examples and characteristics of each type are identified. Lastly, this paper summarizes research using different types of AR in behavioral healthcare and discusses future applications.