Psychophysics: reply: Putting plaids in perspective.
When we look at Anderson's Fig. 1a, or at just about anything else, we see surfaces and boundaries, contours and intersections, edges and angles. These complex, interpreted image features might well be the stimulus elements that stereo mechanisms analyse to recover depth. But are they?
Farell
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Institute for Sensory Research, Syracuse University, Syracuse, New York 13244-5290, USA and Center for Vision Research, SUNY Health Science Center, Syracuse, New York 13210-2375, USAe-mail: bart_farell@isr.syr.edu.