title: The visual perception of plane tilt from motion in small field and large field: psychophysics and theory.
abstract: Subjects indicated the tilt of dotted planes rotating in depth, in monocular viewing, under perspective projection. The responses depended on the FOV (field of view) and on the angle W between the tilt and frontal translation (orthogonal to the rotation axis). Response accuracy increased with the FOV, and decreased with W. Our results support the processing of the second-order optic flow in all cases, but indicate that this flow is quantitatively small in small-field, leading to tilt ambiguities. We examine computational models based on the affine components of the optic flow to interpret our results.
authors.affiliation: Department of Cognitive Sciences, Universiy of California, Irvine, USA.
authors.forename: H
authors.initials: H
authors.lastname: Zhong
authors.forename: V
authors.initials: V
authors.lastname: Cornilleau-Pérès
authors.forename: L-F
authors.initials: LF
authors.lastname: Cheong
authors.forename: G M
authors.initials: GM
authors.lastname: Yeow
authors.forename: D
authors.initials: D
authors.lastname: Droulez
mesh_terms: D000328:Adult; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D008960:Models, Psychological; D009039:Motion Perception / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D012399:Rotation; D015349:Vision, Monocular / Q000502:physiology