立体图对匹配基元的心理物理学实验的探讨

Marr和Poggio等人从视觉信息加工理论中提出零交叉(Zero-Crossing)是视觉早期加工过程中首先得到的最基本的信息。这在生理上有二个高斯分布叠加的感受野以及侧抑现象等可以作为依据,但在心理物理上仍缺乏佐证。我们利用不同密度的随机点,加上了不同百分比的反差噪声的立体图对,观察了各种条件下体视对噪声的耐受特性,得出了有利于说明黑白相间的边(零交叉)为匹配基元的结果。本文报导了这些实验结果并进行了讨论。

PSYCHOPHYSICAL EXPERIMENTAL INVESTIGATIONS FOR THE PRIMITIVES OF STEREOGRAM MATCHING

Marr and Poggio have proposed in their theory of visual information processing that zero-crossings are the most important primitives obtained in the visual primary processing. This is consistent with the physiological observations such as two Gauss like receptive fields, lateral inhibition phenomena and so on But, there is still lack of psycholophysical evidence about this. We have used the random-dot stereograms with a variety of densities and contrast noises to observe the anti-noises characteristics of stereopsis. Our observations are favourable to the "edge" (zero-crossing) as the primitives. In this paper, the experiment results are reported and discussed.