A sensor fusion approach for recognizing continuous human grasping sequences using hidden Markov models

  • Authors:
  • K. Bernardin;K. Ogawara;K. Ikeuchi;R. Dillmann

  • Affiliations:
  • Inst. fuer Logik, Univ. Karlsruhe, Germany;-;-;-

  • Venue:
  • IEEE Transactions on Robotics
  • Year:
  • 2005

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Abstract

The Programming by Demonstration (PbD) technique aims at teaching a robot to accomplish a task by learning from a human demonstration. In a manipulation context, recognizing the demonstrator's hand gestures, specifically when and how objects are grasped, plays a significant role. Here, a system is presented that uses both hand shape and contact-point information obtained from a data glove and tactile sensors to recognize continuous human-grasp sequences. The sensor fusion, grasp classification, and task segmentation are made by a hidden Markov model recognizer. Twelve different grasp types from a general, task-independent taxonomy are recognized. An accuracy of up to 95% could be achieved for a multiple-user system.