Title :
Visual transformations in gesture imitation: what you see is what you do
Author :
Cabido-Lopes, Manuel ; Santos-Victor, José
Author_Institution :
Inst. de Sistemas e Robotica, Inst. Superior Tecnico, Lisbon, Portugal
Abstract :
We propose an approach for a robot to imitate the gestures of a human demonstrator. Our framework consists solely of two components: a Sensory-Motor Map (SMM) and a View-Point Transformation (VPT). The SMM establishes an association between an arm image and the corresponding joint angles and it is learned by the system during a period of observation of its own gestures. The VPT is widely discussed in the psychology of visual perception and is used to transform the image of the demonstrator´s arm to the so-called ego-centric image, as if the robot were observing its own arm. Different structures of the SMM and VPT are proposed in accordance with observations in human imitation. The whole system relies on monocular visual information and leads to a parsimonious architecture for learning by imitation. Real-time results are presented and discussed.
Keywords :
gesture recognition; man-machine systems; mobile robots; real-time systems; robot kinematics; unsupervised learning; visual perception; demonstrator arm image; ego-centric image; gesture imitation; human demonstrator; human imitation; image transformation; imitation learning; joint angles; monocular visual information; observation period; parsimonious architecture; psychology; real-time systems; robot; sensory motor map; view point transformation; visual perception; visual transformations; Cognitive robotics; Human robot interaction; Humanoid robots; Mirrors; Neurons; Psychology; Robot programming; Robot sensing systems; Robotic assembly; Visual perception;
Conference_Titel :
Robotics and Automation, 2003. Proceedings. ICRA '03. IEEE International Conference on
Print_ISBN :
0-7803-7736-2
DOI :
10.1109/ROBOT.2003.1241948