Perception of relative depth interval: systematic biases in perceived depth.
Perception of relative depth interval: systematic biases in perceived depth.
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相对深度区间的感知：感知深度的系统偏差。
DOI：
10.1080/17470218.2011.589520
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Harris JM
中科院分区：
文献类型：
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作者：
Harris JM
给定一对点之间的双眼视差的估计和观看距离的估计，或者眼睛位置的知识，应该可以获得它们的深度分离的估计。在这里，我们表明，当点被安排在不同的垂直几何配置在两个间隔，许多观察员发现这项任务很难。那些能够完成任务的人倾向于感知一种配置中的深度间隔与另一种配置中的深度非常不同。我们探讨了两个合理的解释这种影响。第一个是经验垂直双眼单视界的倾斜：沿着沿着一条明显垂直的线感知的点对应于空间中向后倾斜的一条物理点线。第二，眼睛可以旋转以响应特定的刺激。如果不对这种旋转进行补偿，将导致深度感知的偏差。我们间接测量cyclovergence，使用一个标准的心理物理任务，而观察员看到我们的深度配置。偏差预测误差，由于无论是旋转聚散或倾斜的垂直单视界不一致的深度配置的结果。我们的数据表明，即使是最简单的场景，我们没有准备好从双目视差度量深度。
Given an estimate of the binocular disparity between a pair of points and an estimate of the viewing distance, or knowledge of eye position, it should be possible to obtain an estimate of their depth separation. Here we show that, when points are arranged in different vertical geometric configurations across two intervals, many observers find this task difficult. Those who can do the task tend to perceive the depth interval in one configuration as very different from depth in the other configuration. We explore two plausible explanations for this effect. The first is the tilt of the empirical vertical horopter: Points perceived along an apparently vertical line correspond to a physical line of points tilted backwards in space. Second, the eyes can rotate in response to a particular stimulus. Without compensation for this rotation, biases in depth perception would result. We measured cyclovergence indirectly, using a standard psychophysical task, while observers viewed our depth configuration. Biases predicted from error due either to cyclovergence or to the tilted vertical horopter were not consistent with the depth configuration results. Our data suggest that, even for the simplest scenes, we do not have ready access to metric depth from binocular disparity.