Binocular depth perception from unpaired image points need not depend on scene organization

Jeffrey J. Tsai, Jonathan D. Victor

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Dichoptic stimuli containing unmatched features can produce depth perception despite the absence of binocular disparity, a phenomenon known as da Vinci stereopsis. Unmatched points can arise from depth discontinuities and partial occlusion in the real world. It has been hypothesized that spatial organization of unmatched image features as dictated by the ecological optics of occlusion might determine perceived depth in da Vinci stereopsis. We tested this hypothesis by creating dichoptic stimuli containing unmatched points in which local cues and overall organization could be dissociated. For these stimuli, observers' perception of depth did not depend on the organization of the scene, but only on the local cues. This finding shows the perceived depth of unpaired points need not depend on reconstructing the spatial organization of depth discontinuities in real-world scenes.

Original languageEnglish
Pages (from-to)527-532
Number of pages6
JournalVision Research
Issue number5
StatePublished - Mar 2005
Externally publishedYes


  • Binocular depth perception
  • Occlusion
  • Stereo correspondence
  • Stereopsis
  • Unpaired image points
  • da Vinci stereopsis


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