The interaction of binocular disparity and motion parallax in determining perceived depth and perceived size
The interaction of binocular disparity and motion parallax in determining perceived depth and perceived size
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DOI：
10.1068/p271317
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发表时间：
1998-01-01
期刊：
影响因子：
1.7
通讯作者：
Eagle, RA
中科院分区：
文献类型：
--
作者：
Bradshaw, MF;Parton, AD;Eagle, RA
虽然双目视差和运动视差是深度的有力线索，但两者都不能单独指定关于物体大小和深度的信息。已经表明，来自两个线索的信息可以组合以指定场景中对象的大小、深度和距离（理查兹，1985年美国光学学会杂志A 2 343 - 349）。实验报告中，自然的观看和物理刺激已被用来调查的性质的大小和深度知觉的基础上的差异和视差单独和一起在一个范围内的观看距离。观察者调整了三个明亮的LED的相对位置，这些LED被限制在平面图中形成一个三角形，顶点指向观察者，因此其尺寸与受试者持有的标准相匹配。静态单目观察时，深度设置不准确且不稳定。当这两个线索一起出现时，准确性增加，感知结果与两个线索提供的信息的平均值一致。当观察者的反应中明显的偏差（低估标准尺寸的倾向）被考虑在内时，准确度很高，尺寸和深度的恒定性接近100%。此外，鉴于此假设，使用相同的观看距离估计来缩放大小和深度估计。
Although binocular disparity and motion parallax are powerful cues for depth, neither, in isolation, can specify information about both object size ann depth. It has been shown that information from both cues can be combined to specify the size, depth, and distance of an object in a scene (Richards, 1985 Journal of the Optical Society of America A 2 343 - 349). Experiments are reported in which natural viewing and physical stimuli have been used to investigate the nature of size and depth perception on the basis of disparity and parallax presented separately and together at a range of viewing distances. Observers adjusted the relative position of three bright LEDs, which were constrained to form a triangle in plan view with the apex pointing toward the observer, so its dimensions matched that of a standard held by the subject. With static monocular viewing, depth settings were inaccurate and erratic. When both cues were present together accuracy increased and the perceptual outcome was consistent with an averaging of the information provided by both cues. When an apparent bias evident in the observers' responses (the tendency to underestimate the size of the standard) was taken into account, accuracy was high and size and depth constancy were close to 100%. In addition, given this assumption, the same estimate of viewing distance was used to scale size and depth estimates.