Challenges in building robots that imitate people
Imitation in animals and artifacts
Active vision for sociable robots
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Enhanced therapeutic interactivity using social robot Zeno
Proceedings of the 4th International Conference on PErvasive Technologies Related to Assistive Environments
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Recent advances in computing and robot technology create new opportunities for building robots with increasingly more sophisticated interactivity. One such application is the visual interaction between humans and humanoid in tasks such as mimicking and following. Achieving realistic head-eye motion of the humanoid requires understanding of human kinesiology that dictates the way human coordinate head-eye motion and the ability to control the motion of humanoid to move in the same manner that humans do. In this paper we propose an efficient head-eye motion coordination scheme using an optimization approach - an objective function is formed based on human kinesiology and then optimized for obtaining a realistic head-eye trajectory. The tracking robustness during conversational interaction with a human is further enhanced through a visual feedback scheme, which reduces modelling errors of the humanoid hardware. Experimental results show the tracking efficiency and realism of the motion generated by the proposed scheme with Lilly, a humanoid under development in our lab.