Revisiting path steering for 3D manipulation tasks

12 years 11 months ago

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The law of path steering, as proposed by Accot and Zhai, describes a quantitative relationship between human temporal performance and the path’s spatial characteristics. The steering law is formulated as a continuous goal crossing task, in which a large number of goals are crossed along the path. The steering law has been veriﬁed empirically for locomotion, in which a virtual driving task through straight and circular paths was performed. We revisit the path steering law for manipulation tasks in desktop virtual environments. We have conducted controlled experiments in which users operate a pen input device to steer a virtual ball through paths of varying length, width, curvature and orientation. Our results indicate that, although the steering law provides a good description of overall task time as a function of index of difﬁculty ID = L/W, where L and W are the path length and width, it does not account for other relevant factors. We speciﬁcally show that the inﬂuence of c...

Lei Liu, Jean-Bernard Martens, Robert van Liere

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