COLOR CONTOURS AND STEREOPSIS

In this study the role of colour contours in stereopsis has been investigated for random dot stereograms and for figural stereo stimuli. The main conclusion is that for random dot stereograms there are ratios of luminances for dots and background where stereopsis disappears, which could point to the possibility that colour differences alone are not sufficient to evoke stereopsis. The ratio of the luminances, however, is not unity, in general, when dots and background are of different colours. This points to colour specific effects. For figural stereograms, stereopsis does not disappear at the aforementioned ratios of the luminances of figure and background. Here colour certainly has a contribution to stereopsis on its own. In another series of experiments the influence of colour rivalry on the stereo thresholds has been investigated. © 1979.