Perception of local three-dimensional shape.
Perception of local three-dimensional shape.
复制标题
对局部三维形状的感知。
DOI：
--
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
J. Todd
中科院分区：
文献类型：
--
作者：
F. Phillips;J. Todd
作者提出了一系列的4个实验，旨在测试感知局部形状信息的能力。观察者被呈现各种平滑变化的三维表面，其中他们报告在几个探针位置处的形状指数和高斯曲率的符号。结果表明，观察者是穷人在作出判断的基础上，这些地方的措施，特别是当该地区周围的地方点受到限制或操纵，使其非相干。形状指数的判断需要至少2度的上下文周围的探头位置，和高斯曲率判断的符号性能恶化，以及作为上下文信息的限制。
The authors present a series of 4 experiments designed to test the ability to perceive local shape information. Observers were presented with various smoothly varying 3-dimensional surfaces where they reported shape index and sign of Gaussian curvature at several probe locations. Results show that observers are poor at making judgments based on these local measures, especially when the region surrounding the local point is restricted or manipulated to make it noncoherent. Shape index judgments required at least 2 degrees of context surrounding the probe location, and performance on sign of Gaussian curvature judgments deteriorated as the contextual information was restricted as well.