Planning dextrous hand precision grasps from range data, using preshaping and finger trajectories:

Abstract: "Inspired by human grasping behavior, use of hand preshapes has for some time been recognised as a useful way of reducing the complexity of planning dextrous hand grasps. It is common for preshapes to be chosen and fitted to the object using coarse object characteristics. In this pape...

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Bibliographische Detailangaben
Hauptverfasser: Wren, David (VerfasserIn), Fisher, Robert B. (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: Edinburgh 1995
Schriftenreihe:University <Edinburgh> / Department of Artificial Intelligence: DAI research paper 769
Schlagworte:
Zusammenfassung:Abstract: "Inspired by human grasping behavior, use of hand preshapes has for some time been recognised as a useful way of reducing the complexity of planning dextrous hand grasps. It is common for preshapes to be chosen and fitted to the object using coarse object characteristics. In this paper we use range data to provide the more detailed knowledge of surface geometry required when planning precision grasps. We define sets of preshapes, with associated modes of fingertip closure, and give criteria for the choice and positioning of the preshapes, based on intersecting fingertip trajectories with the graspable surfaces of the object. Grasps are planned in simulation using real range data and an anthropomorphic hand model. Our results show that complex objects can be grasped using relatively simple, fast algorithms when the hand movements are constrained in this way."
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