Publikation
Believable Virtual Characters in Human-Computer Dialogs: State of The Art Report
Y. Jung; A. Kuijper; D.W. Fellner; Michael Kipp; Jan Miksatko; J. Gratch; D. Thalmann
In: 32nd Annual Conference of the European Association for Computer Graphics. Eurographics (EG-11), 32nd, April 11-15, Llandudno, United Kingdom, ACM Press, 2011.
Zusammenfassung
For many application areas, where a task is most naturally represented by talking or where standard input devices
are difficult to use or not available at all, virtual characters can be well suited as an intuitive man-machine interface
due to their inherent ability to simulate verbal as well as nonverbal communicative behavior. This type of
interface is made possible with the help of multimodal dialog systems, which extend common speech dialog systems
with additional modalities just like in human-human interaction. Multimodal dialog systems consist at least of an
auditive and graphical component, and communication is based on speech and nonverbal communication alike.
However, employing virtual characters as personal and believable dialog partners in multimodal dialogs entails
several challenges, because this not only requires a reliable and consistent motion and dialog behavior that also
regards nonverbal communication and affective components, but also efficiency for the realization of applications.
Besides modeling the mind and creating intelligent communication behavior, which is an active field of research
in artificial intelligence, the visual representation of a character including its perceivable behavior, such as facial
expressions and gestures, belongs to the domain of computer graphics and likewise implicates many open issues
concerning natural communication. In this report we discuss current techniques for designing and implementing
the presentation component of such a dialog system.