Harem: The Hybrid Augmented Reality Exhibition Model

Role_1

Instinct

AREM agents involved in this scenario are the statue entity, the visitor entity and the SPS entity. We now describe a possible interaction case between a statue entity and a visitor entity. First the statue entity is in a sleep state, with spotlights and display turned off. When the SPS entity detects the presence of some visitor near the statue, it sends a request to the statue entity. This is accepted by its receiver, and is sent to survival and to vocation. If survival detects that the visitor is too close to the statue, it alerts vocation and activates the alarm system. If this does not happen, vocation processes SPS request and selects Role_1 for request fulfilling. Role_1 activates its Enlight() method, which switches on the spotlights, and its Present() method, which displays a generic

F
ig. 8. Statue entity reaction to SPS request

presentation of the statue on the remote display.

If the visitor shows some interest in the statue (the visitor could show his interest by using some commands on his mobile device, or interest may be proactively shown by the Visitor entity based on stored information about the visitor), a Visitor request is sent by the Visitor entity to the Statue Entity. The first step of the interaction protocol is the same as before; but this time vocation selects Role_2 for request fulfilling. Role_2 activates the InformationDisplay() method, which displays on the remote display the detailed information required by the visitor.

Fig. 9. Statue entity reaction to Visitor request

Finally, when generic unknown requests are sent to the Statue entity, its vocation activates instinct, which restores the sleep state with spotlights and remote display turned off. Visitor and SPS entities may be represented the same way as the Statue entity.

F
ig. 10. Statue entity reaction to Visitor request
8. Conclusions

In this work we presented a three projection AR model along with a semantic routing strategy for knowledge and methods discovery in Augmented Reality. The cooperation mechanism turns out to be efficient, fault tolerant, and capable of dynamically adapting itself to AR environment changes. Further work will include protocol design for communication, resource look up, semantic routing, and physical device management .

9. Acknowledgements

This work has been partly supported by the CNR (National Research Council of Italy) and partly by the MIUR (Ministry of the Instruction, University and Research of Italy).

10. References
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