Modeling Interactive Augmented Reality Environments

In this chapter, an approach to creation of augmented reality environments, called Augmented Reality Environment Modeling (AREM), is presented. The concept of augmented reality is explained and the components of augmented reality environments are presented. In the AREM approach, augmented reality environments are created based on Augmented Reality Scene Model (ARSM), which defines the concepts of AR-Class and AR-Object following the object-oriented paradigm. The object-oriented concept of a class composed of properties and methods is enhanced with elements required for building interactive augmented reality environments: geometry, interactive behavior, media objects, dependences between properties, and aggregation relationships. The geometry and behavior specified in AR-Classes can be parameterized using their properties and relationships. Thus, content creators are able to alter the geometry and behavior of AR-Objects by setting the property values and the relationships with other AR-Objects. Visual and behavioral characteristics of AR-Objects can be dynamically changed over time due to the changes applied to the property values of these AR-Objects. The chapter is concluded with a presentation of the application of the AREM approach to building augmented reality learning environments, which enable learners to directly interact with the learning content presented in their real environment.

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