基于小视野和大视野运动的平面倾斜视觉感知：心理物理学与理论

The visual perception of plane tilt from motion in small field and large field: psychophysics and theory.

作者信息

Zhong H, Cornilleau-Pérès V, Cheong L-F, Yeow G M, Droulez D

机构信息

Department of Cognitive Sciences, Universiy of California, Irvine, USA.

出版信息

Vision Res. 2006 Oct;46(20):3494-513. doi: 10.1016/j.visres.2006.04.003.

DOI:10.1016/j.visres.2006.04.003

PMID: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.

摘要

受试者在单眼观察下，于透视投影中指出深度旋转的虚线平面的倾斜度。反应取决于视野（FOV）以及倾斜与正面平移（与旋转轴正交）之间的角度W。反应准确性随视野增加而提高，随W减小。我们的结果支持在所有情况下对二阶光流的处理，但表明在小视野中这种光流在数量上较小，导致倾斜模糊性。我们研究基于光流仿射分量的计算模型来解释我们的结果。