Recognizing gaze aversion gestures in embodied conversational discourse

摘要

Eye gaze offers several key cues regarding conversational discourse during face-to-face interaction between people. While a large body of research results exist to document the use of gaze in human-to-human interaction, and in animating realistic embodied avatars, recognition of conversational eye gestures - distinct eye movement patterns relevant to discourse - has received less attention. We analyze eye gestures during interaction with an animated embodied agent and propose a non-intrusive vision-based approach to estimate eye gaze and recognize eye gestures. In our user study, human participants avert their gaze (i.e. with "look-away" or "thinking" gestures) during periods of cognitive load. Using our approach, an agent can visually differentiate whether a user is thinking about a response or is waiting for the agent or robot to take its turn.