Abstract
Haptic rendering is a highly device-dependent process. Accordingly, haptic rendering algorithms should be designed regarding the specific physical features of a haptic device. The Immersion CyberGrasp is a force feedback device which can provide an individual force roughly perpendicular to the fingertip of each finger. In this paper, we propose a novel force rendering algorithm for the Immersion CyberGrasp considering the feature of area contacts between the virtual hand avatar and target geometric models. Line segment clusters are used as haptic proxies for the real-time collision detection between the fingertips and target geometric models. Force computations are conducted directly using the collision detection results. Spatial subdivision is performed on target geometric models to facilitate real-time collision detection. Experimental results show that our algorithm can provide stable and realistic force feedback.
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