Ishigushi A, Wolfe J M
Department of Brain and Cognitive Science, MIT, Cambridge 02139.
Perception. 1993;22(12):1403-13. doi: 10.1068/p221403.
When a real or subjective contour is superimposed on a repetitive texture or 'wallpaper pattern', the apparent depth of the elements of the wallpaper pattern may be influenced by the contour. When the contour has crossed disparity, the elements inside the contour are seen floating in the plane of the contour. This is called 'stereoscopic capture'. On the other hand, when the contour has uncrossed disparity a different, somewhat unstable, percept is seen. The wallpaper elements are either seen to form a transparent surface floating in front of the contour, or all of the elements inside and outside of the contour are seen to lie in the uncrossed plane of the inducing contour. We suggest that the asymmetry between crossed and uncrossed stereo capture is a by-product of the different roles played by crossed and uncrossed disparity in stereoscopic surface construction: specifically, crossed and, perhaps, zero disparity spreads one-directionally into a figure from a contour whereas uncrossed disparity spreads out from a figure in all directions. These points are illustrated with a series of demonstrations.
当真实或主观轮廓叠加在重复纹理或“壁纸图案”上时，壁纸图案元素的表观深度可能会受到轮廓的影响。当轮廓具有交叉视差时，轮廓内的元素看起来在轮廓平面中浮动。这被称为“立体捕捉”。另一方面，当轮廓具有非交叉视差时，会看到一种不同的、有点不稳定的感知。壁纸元素要么被视为形成一个漂浮在轮廓前方的透明表面，要么轮廓内外的所有元素都被视为位于诱导轮廓的非交叉平面中。我们认为，交叉和非交叉立体捕捉之间的不对称是交叉和非交叉视差在立体表面构建中所起不同作用的副产品：具体而言，交叉视差以及可能的零视差从轮廓单向扩展到一个图形中，而非交叉视差则从一个图形向各个方向扩展。通过一系列演示来说明这些要点。
