The properties of mixed reality boundaries
نویسنده
چکیده
Mixed reality boundaries establish transparent windows between physical and virtual spaces. We introduce a set of properties that allow such boundaries to be configured to support different styles of co-operative activity. These properties are grouped into three categories: permeability (properties of visibility, audibility and solidity); situation (properties of location, alignment, mobility and segmentation); and dynamics (properties of lifetime and configurability). We discuss how each of these properties can be technically realised. We also introduce the meta-properties of symmetry and representation. We then describe and compare two contrasting demonstrations, a performance and an office-door, that rely on different property configurations. Introduction approaches to shared mixed reality There has been a growing interest in techniques for combining real and virtual environments to create mixed realities spatial environments where participants can interact with physical and digital information in an integrated way (Milgram & Kishino, 1994). Mixed realities may be shared, enabling people who are distributed across multiple physical and virtual spaces to communicate with one another. A variety of approaches to creating a shared mixed reality have been demonstrated, including augmented reality, augmented virtuality, tangible bits and mixed reality boundaries. Augmented reality involves overlaying and registering digital information (e.g., text and graphics) onto a real world scene in such a way that the digital information appears to be attached to physical objects, even as they move about.
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