title: Rotation and direction judgment from visual images head-slaved in two and three degrees-of-freedom.
abstract: The contribution to spatial awareness of adding a roll degree-of-freedom (DOF) to telepresence camera platform yaw and pitch was examined in an experiment where subjects judged direction and rotation of stationary target markers in a remote scene. Subjects viewed the scene via head-slaved camera images in a head-mounted display. Elimination of the roll DOF affected rotation judgment, but only at extreme yaw and pitch combinations, and did not affect azimuth and elevation judgement. Systematic azimuth overshoot occurred regardless of roll condition. Observed rotation misjudgments are explained by kinematic models for eye-head direction of gaze.
authors.affiliation: NASA-ARC, Moffet Field, CA 94035, USA. bda@eos.arc.nasa.gov
authors.forename: B D
authors.initials: BD
authors.lastname: Adelstein
authors.forename: S R
authors.initials: SR
authors.lastname: Ellis
mesh_terms: D000328:Adult; D006804:Ergonomics; D005403:Fixation, Ocular; D019416:Head Movements; D006801:Humans; D007698:Kinesis; D008297:Male; D008875:Middle Aged; D009949:Orientation; D012371:Robotics; D012399:Rotation; D013028:Space Perception; D013037:Spatial Behavior; D013647:Task Performance and Analysis; D014584:User-Computer Interface; D014796:Visual Perception