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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 18, Iss. 10 — Oct. 1, 2001
  • pp: 2430–2447

Veridicality of three-dimensional shape perception predicted from amplitude spectra of natural textures

Andrea Li and Qasim Zaidi  »View Author Affiliations

JOSA A, Vol. 18, Issue 10, pp. 2430-2447 (2001)

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We show that the amplitude spectrum of a texture pattern, regardless of its phase spectrum, can be used to predict whether the pattern will convey the veridical three-dimensional (3-D) shape of the surface on which it lies. Patterns from the Brodatz collection of natural textures were overlaid on a flat surface that was then corrugated in depth and projected in perspective. Perceived ordinal shapes, reconstructed from a series of local relative depth judgments, showed that only about a third of the patterns conveyed veridical shape. The phase structure of each pattern was then randomized. Simulated concavities and convexities were presented for both the Brodatz and the phase-randomized patterns in a global shape identification task. The concordance between the shapes perceived from the Brodatz patterns and their phase-randomized versions was 80–88%, showing that the capacity for a pattern to correctly convey concavities and convexities is independent of phase information and that the amplitude spectrum contains all the information required to determine whether a pattern will convey veridical 3-D shape. A measure of the discrete oriented energy centered on the axis of maximum curvature was successful in identifying textures that convey veridical shape.

© 2001 Optical Society of America

OCIS Codes
(100.2960) Image processing : Image analysis
(150.0150) Machine vision : Machine vision
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.5020) Vision, color, and visual optics : Perception psychology
(330.5510) Vision, color, and visual optics : Psychophysics

Original Manuscript: January 12, 2001
Revised Manuscript: March 29, 2001
Manuscript Accepted: March 6, 2001
Published: October 1, 2001

Andrea Li and Qasim Zaidi, "Veridicality of three-dimensional shape perception predicted from amplitude spectra of natural textures," J. Opt. Soc. Am. A 18, 2430-2447 (2001)

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