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  • Title: The visual perception of plane tilt from motion in small field and large field: psychophysics and theory.
    Author: Zhong H, Cornilleau-Pérès V, Cheong LF, Yeow GM, Droulez D.
    Journal: Vision Res; 2006 Oct; 46(20):3494-513. PubMed ID: 16769100.
    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.
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