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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: 2404–2413

Perception of spatiotemporal random fractals: an extension of colorimetric methods to the study of dynamic texture

Vincent A. Billock, Douglas W. Cunningham, Paul R. Havig, and Brian H. Tsou  »View Author Affiliations

JOSA A, Vol. 18, Issue 10, pp. 2404-2413 (2001)

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Recent work establishes that static and dynamic natural images have fractal-like 1/fα spatiotemporal spectra. Artifical textures, with randomized phase spectra, and 1/fα amplitude spectra are also used in studies of texture and noise perception. Influenced by colorimetric principles and motivated by the ubiquity of 1/fα spatial and temporal image spectra, we treat the spatial and temporal frequency exponents as the dimensions characterizing a dynamic texture space, and we characterize two key attributes of this space, the spatiotemporal appearance map and the spatiotemporal discrimination function (a map of MacAdam-like just-noticeable-difference contours).

© 2001 Optical Society of America

OCIS Codes
(100.6740) Image processing : Synthetic discrimination functions
(330.1730) Vision, color, and visual optics : Colorimetry
(330.5510) Vision, color, and visual optics : Psychophysics
(330.6100) Vision, color, and visual optics : Spatial discrimination
(330.6110) Vision, color, and visual optics : Spatial filtering
(330.6790) Vision, color, and visual optics : Temporal discrimination

Original Manuscript: October 23, 2000
Revised Manuscript: April 16, 2001
Manuscript Accepted: April 4, 2001
Published: October 1, 2001

Vincent A. Billock, Douglas W. Cunningham, Paul R. Havig, and Brian H. Tsou, "Perception of spatiotemporal random fractals: an extension of colorimetric methods to the study of dynamic texture," J. Opt. Soc. Am. A 18, 2404-2413 (2001)

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