存在于运动中的视觉深度距离信息

A Potential Visual Depth Information Existing in Motion

人类的视知觉系统可用多种线索对深度距离进行判断。本文将提出一种新的深度知觉线索,此线索存在于双眼视差在物体运动过程中所表现出的变化模式中,在这种线索下的深度距离的计算公式为=(22)2()2,它只涉及双眼距离I及视差变化的信息,因而具有被主体直接利用作出深度判断的可能。本文通过心理物理法初步探索了人类主体利用这种信息做出深度判断的能力,结果表明,观察者对运动中的双眼视差信息是不敏感的。

The human visual system can use different methods to get depth information of objects in the environment. The present research raised a new cue for the visual system to do the depth judgment. This cue bases on a dynamic changing pattern of the binocular parallax caused by the oncoming object and the instant depth can be calculated by formula: =( 2 2)2()2. Because the formula is defined by the I(distance between two eyes) and the information related to(binocular parallax), so the observer has the potential to get the depth information directly. The research tried to test the subjects' ability to employ the new cue. The result showed that observers were not sensitive to the new proposed depth cue.