7-6 Perceived Motion in Structure-from-Motion : Pointing Responses to the Axis of Rotation

Abstract

We investigated the ability to match finger orientation to the direction of the axis of rotation in various structure-from-motion (SFM) displays. These SFM displays included full rotations of a group of points, the profiles of a rotating ellipsoid and 2-views of a group of points. The results showed that subjects were best at the full rotations. For profile and two-view displays subjects could report the slant of the axis of rotation but could accurately report the tilt only when the axis was nearly perpendicular to the view direction.