Real-time system for measuring gaze direction and facial features: towards automatic discrimination of lies using diverse nonverbal information
Interactive and autonomous agents might be common in everyday life in the future; we expect that such agents will have the ability to communicate with people naturally. For natural communication, the agents should speculate about the intentions of the people they interact with. To enable agents to speculate about intentions like deception, we focused on unconscious expressions when people tell a lie. However, there is no system that can meet the necessary conditions for measuring nonverbal information in natural communication. Therefore, we made a real-time system for measuring gaze direction and facial features. We conducted experiments for discriminating lies by using the system in a situation similar to actual communication. As a result, we found that we could discriminate lies by using diverse nonverbal information in the same way people did.
KeywordsDiscriminant Function Facial Feature Discrimination Ratio Pitch Variable Dark Pixel
This research was partially supported by the Ministry of Education, Culture, Sports, Science and Technology through a Grant-in-Aid for Creative Scientific Research (No. 13GS0003) and Scientific Research on Priority Areas (No. 04560012).
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