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

Billock, VA; Cunningham, DW; Havig, PR; Tsou, BH

doi:10.1364/josaa.18.002404

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

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Billock, V., Cunningham, D., Havig, P., & Tsou, B. (2001). Perception of spatiotemporal random fractals: an extension of colorimetric methods to the study of dynamic texture. Journal of the Optical Society of America A, 18(10), 2404-2413. doi:10.1364/josaa.18.002404.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-E340-A

Abstract

Recent work establishes that static and dynamic natural images have fractal-like 1/f spatiotemporal spectra. Artifical textures, with randomized phase spectra, and 1/f amplitude spectra are also used in studies of texture and noise perception. Influenced by colorimetric principles and motivated by the ubiquity of 1/f 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).