In nonverbal communication, gestures are performed to be used in conjunction with verbal communication. Japan is a country that uses more communication compared Indonesia. When communicating, the Japanese often use hand gestures. This gesture very important know for language learners because it has many variations of body learning. The same sometimes difference intent conveyed between sender an...

Gestures are a natural and effective altenative to command mobile robots. This paper describes an online visual recognition system to recognize a set of 5 dynamic gestures executed with the user’s right hand and oriented to command mobile robots. The system employs a radial scan segmentation algorithm combined with a statistical-based skin detection method to find the candidate face of the user...

Point Distribution Models (PDMs) are statistical mo dels which represent objects whose shape can vary. A useful feature of PDMs is their ability to capture the shape of variable objects within a training set with a small number of shape parameters. This compact and accurate parametrization can be used for the design of efficient classification systems. In this paper we de scribe a classificatio...

Recent years have seen a growing recognition of the central role of affect and motivation in learning. In particular, nonverbal behaviors such as posture and gesture provide key channels signaling affective and motivational states. Developing a clear understanding of these mechanisms will inform the development of personalized learning environments that promote successful affective and motivati...

Many scholars agree that face-to-face dialogue is the basic format of language use. Our program of research focuses on two unique dimensions of face-to-face dialogue: (i) communicative use of hand gestures, facial displays, and eye gaze and (ii) reciprocity and mutual influence between the participants. These two features often work together in ways that require new theories and research method...