van Damme W J, van de Grind W A
Utrecht Biophysics Research Institute, Utrecht University, The Netherlands.
Vision Res. 1993 Jul;33(11):1581-7. doi: 10.1016/0042-6989(93)90151-l.
We examined the performance of human observers to identify three-dimensional (3D) shape from motion induced by exploratory head movements. Subjects categorized 3D quadratic surfaces with randomly chosen shape but with a fixed amount of curvature in one of eight shape categories. Human observers had their best performance with convex parabolic and concave parabolic shapes, but had more difficulties in identifying the hyperbolic shapes. The identification of 3D shape was not significantly influenced by the amount of curvature. This means that our description of 3D shape closely matches the intuitive notion of shape, and that its use in 3D shape perception tasks is justified.
我们研究了人类观察者从探索性头部运动所诱发的运动中识别三维（3D）形状的表现。受试者将具有随机选择形状但在八个形状类别之一中具有固定曲率量的3D二次曲面进行分类。人类观察者对凸抛物面和凹抛物面形状的识别表现最佳，但在识别双曲线形状时遇到更多困难。3D形状的识别不受曲率量的显著影响。这意味着我们对3D形状的描述与形状的直观概念紧密匹配，并且其在3D形状感知任务中的应用是合理的。
