Zhong H, Cornilleau-Pérès V, Cheong L-F, Yeow G M, Droulez D
Department of Cognitive Sciences, Universiy of California, Irvine, USA.
Vision Res. 2006 Oct;46(20):3494-513. doi: 10.1016/j.visres.2006.04.003.
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.
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。
