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

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.

[1]  David Mumford,et al.  A Bayesian treatment of the stereo correspondence problem using half-occluded regions , 1992, Proceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition.

[2]  G. J. Mitchison,et al.  Interpolation in stereoscopic matching , 1985, Nature.

[3]  Barton L. Anderson,et al.  The role of partial occlusion in stereopsis , 1994, Nature.

[4]  Tomaso Poggio,et al.  Cooperative computation of stereo disparity , 1988 .

[5]  D Marr,et al.  A computational theory of human stereo vision. , 1979, Proceedings of the Royal Society of London. Series B, Biological sciences.

[6]  Julie M. Harris,et al.  Independent neural mechanisms for bright and dark information in binocular stereopsis , 1995, Nature.

[7]  J P Frisby,et al.  PMF: A Stereo Correspondence Algorithm Using a Disparity Gradient Limit , 1985, Perception.

[8]  Lei Liu,et al.  Quantitative stereoscopic depth without binocular correspondence , 1994, Nature.

[9]  S. McKee,et al.  A contrast ratio constraint on stereo matching , 1995, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[10]  Shinsuke Shimojo,et al.  Da vinci stereopsis: Depth and subjective occluding contours from unpaired image points , 1990, Vision Research.

[11]  Ken Nakayama,et al.  Quantitative depth for a phantom surface can be based on cyclopean occlusion cues alone , 1999, Vision Research.

[12]  Jonathan D Victor,et al.  Neither occlusion constraint nor binocular disparity accounts for the perceived depth in the ‘sieve effect’ , 2000, Vision Research.

[13]  K. Prazdny,et al.  Detection of binocular disparities , 2004, Biological Cybernetics.

[14]  S. Grossberg,et al.  Cortical computation of stereo disparity , 1998, Vision Research.

[15]  B. Gillam,et al.  Panum's Limiting Case: Double Fusion, Convergence Error, or ‘Da Vinci Stereopsis’ , 1995, Perception.

[16]  G. J. Mitchison,et al.  The resolution of ambiguous stereoscopic matches by interpolation , 1987, Vision Research.

[17]  D Buckley,et al.  Integration of Stereo and Texture Cues in the Formation of Discontinuities during Three-Dimensional Surface Interpolation , 1989, Perception.

[18]  I P Howard,et al.  Depth from Binocular Rivalry without Spatial Disparity , 1995, Perception.

[19]  Ian P. Howard,et al.  Binocular Vision and Stereopsis , 1996 .

[20]  T. Collett.  Extrapolating and interpolating surfaces in depth , 1985, Proceedings of the Royal Society of London. Series B. Biological Sciences.