Shape from stereo: A systematic approach using quadratic surfaces

Sjoerd C. De Vries; Astrid M L Kappers; Jan J. Koenderink

doi:10.3758/BF03211716

Shape from stereo: A systematic approach using quadratic surfaces

Sjoerd C. De Vries, Astrid M L Kappers, Jan J. Koenderink

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We used quadratic shapes in several psychophysical shape-from-stereo tasks. The shapes were elegantly represented in a 2-D parameter space by the scale-independent shape index and the scale-dependent curvedness. Using random-dot stereograms to depict the surfaces, we found that the shape of hyperbolic surfaces is slightly more difficult to recognize than the shape of elliptic surfaces. We found that curvedness (and indirectly, scale) has little or no influence on shape recognition.

Original language	English
Pages (from-to)	71-80
Number of pages	10
Journal	Perception & Psychophysics
Volume	53
Issue number	1
DOIs	https://doi.org/10.3758/BF03211716
Publication status	Published - Jan 1993

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title = "Shape from stereo: A systematic approach using quadratic surfaces",

abstract = "We used quadratic shapes in several psychophysical shape-from-stereo tasks. The shapes were elegantly represented in a 2-D parameter space by the scale-independent shape index and the scale-dependent curvedness. Using random-dot stereograms to depict the surfaces, we found that the shape of hyperbolic surfaces is slightly more difficult to recognize than the shape of elliptic surfaces. We found that curvedness (and indirectly, scale) has little or no influence on shape recognition.",

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Shape from stereo: A systematic approach using quadratic surfaces

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