Stereoscopic depth constancy depends on the subject's task
Stereoscopic depth constancy depends on the subject's task
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DOI：
10.1016/0042-6989(96)00090-9
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发表时间：
1996-11-01
期刊：
影响因子：
1.8
通讯作者：
Bradshaw, MF
中科院分区：
文献类型：
--
作者：
Glennerster, A;Rogers, BJ;Bradshaw, MF
在相同的观看条件下，观察者对立体定义表面的形状做出两种类型的判断：一种需要估计观看距离才能获得正确的性能（例如，将半圆柱体的深度设置为等于其半高或将二面角设置为 90 度），另一种则不需要（例如，匹配在两个距离处呈现的正弦波纹或半圆柱体的深度）。两种类型任务的深度恒定性约为分别为 75% 和 100%，我们认为观察者可以使用简单的“直接”策略来执行深度匹配任务，而不是构建和比较每个表面的度量表示。版权所有 (C) 1996 爱思唯尔科学有限公司
Under identical viewing conditions, observers made two types of judgement about the shape of stereoscopically defined surfaces: one required an estimate of viewing distance for correct performance (e.g. setting the depth of a hemi-cylinder to equal its half-height or a dihedral angle to 90 deg), the other did not (matching the depth of, for example, sinusoidal corrugations or hemicylinders presented at two distances), Depth constancy for the two types of task was about 75% and 100%, respectively, We argue that observers may use a simple ''direct'' strategy to perform the depth matching task rather than constructing and comparing a metric representation of each surface. Copyright (C) 1996 Elsevier Science Ltd.