Databases Reference
In-Depth Information
Figure 8. Data flow of the multi-modal input translator
detailed description about the semantic network and its use is given in our recent
work [7].
5
Conclusion
In this paper, we describe the design and implementation of VWDB which has
been under development at Ochanomizu University since 1999. A prototype system
architecture, a VWDB data base schema definition language, and a VWDB multi-
modal data manipulation language were introduced in this paper. Particularly, the
design and implementation of the VWDB multi-modal data manipulation language
was intensively reported. Since users are wearing an HMD, a data globe, a 3-D
mouse, a microphone, and sensors to detect the position of an avatar and a hand,
users can interact with the virtual world database in a multi-modal manner. Two
input modalities were voice and gesture. An automata-based approach was
presented in this paper to characterize the VWDB multi- modal user interface.
The development of the VWDB has not been completed. We must expand our
investigation to include a multi-modal query language as well as a virtual world
constraint description language. Also, we need to expand our system to integrate
more than one VR front-end systems so that the VWDB supports collaborative
work.
Acknowledgements
The authors express their great thanks to all of the VWDB project members
including Misses. Kumi Yoshikawa and Shoko Yoshida.
