Browse Publications Technical Papers 2001-01-2092
2001-06-26

Prediction of Head Orientation based on the Visual Image of a Three Dimensional Space 2001-01-2092

Head movements contribute to the acquisition of targets in visually guided tasks such as reaching and grasping. It has been found that head orientation is generally related to the spatial location of the visual target. The movements of the head in a three-dimensional space are described using six degrees of freedom including translations along x-, y- and z-axis plus rotations about x-, y- and z-axis. While the control of head movement is heavily dependent upon visual perception, head movements lead to a change in the visual perception of the task space as well. In the present study we analyzed head movements in a set of driving simulation experiments. Also a theoretical reconstruction of the perceived task space after head movements was modeled by a statistical regression. This process included the transformation of the task space from a global reference frame (earth-fixed) into a perceived space in a head-centered reference frame (head-fixed). Derived transformation parameters were decomposed into translational / rotational components of the head movements and compared to actual head rotation / translation to confirm the effectiveness of the model.

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