INFLUENCE OF THE LUMINANCE AND OPPONENT CHROMATIC CHANNELS ON STEREOPSIS WITH RANDOM-DOT STEREOGRAMS

The present work examines the relationship between random-dot stereogr ams (via the disparity range parameter) and color-vision mechanisms (v ia the luminance channel and red-green and tritan directions at isolum inance). The results clearly indicate that the variations in the stere ograms along red-green confusion lines contribute to stereopsis. Stere oscopic perception depends on spatial information for stereograms gene rated with variations along tritan confusion lines. For observers who perceive stereopsis via tritan directions, the results show a gradatio n in the disparity range, with the disparity range for stereograms gen erated by luminance variations being greater than for stereograms gene rated in red-green directions; the latter range is, in turn, greater t han for stereograms generated along tritan directions. (C) 1997 Elsevi er Science Ltd.