Halpern D L
Department of Psychology, Brandeis University, Waltham, MA 02254.
Vision Res. 1991;31(9):1611-7. doi: 10.1016/0042-6989(91)90137-t.
Random-dot stereograms demonstrate that monocularly visible contours are not necessary for stereopsis, although in the absence of point-for-point correspondence, they are sufficient for stereoscopic combination. The quality of stereopsis from interocularly uncorrelated motion-defined forms was examined here. Results indicate that perceived magnitude of depth is not veridical, and that more depth is seen for crossed than uncrossed disparities. The difficulty in perceiving "behind" depth is due to a monocular depth cue which conflicts with binocular disparity in specifying depth only in the absence of interocular correlation. The overall reduction in depth is not the result of binocular rivalry from the lack of interocular correlation, and so appears to be a function of the type of feature being matched.
随机点立体图表明，单眼可见轮廓对于立体视觉并非必要，尽管在没有点对点对应关系的情况下，它们足以进行立体组合。本文研究了双眼不相关的运动定义形式产生的立体视觉质量。结果表明，深度感知的大小并不真实，交叉视差比非交叉视差能看到更多的深度。感知“后方”深度的困难是由于一种单眼深度线索，它仅在没有双眼相关性时与双眼视差在确定深度方面相互冲突。深度的整体降低不是由于缺乏双眼相关性导致的双眼竞争，因此似乎是所匹配特征类型的函数。
