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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 7 — Jul. 1, 2012
  • pp: 1313–1345

Local image statistics: maximum-entropy constructions and perceptual salience

Jonathan D. Victor and Mary M. Conte  »View Author Affiliations


JOSA A, Vol. 29, Issue 7, pp. 1313-1345 (2012)
http://dx.doi.org/10.1364/JOSAA.29.001313


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Abstract

The space of visual signals is high-dimensional and natural visual images have a highly complex statistical structure. While many studies suggest that only a limited number of image statistics are used for perceptual judgments, a full understanding of visual function requires analysis not only of the impact of individual image statistics, but also, how they interact. In natural images, these statistical elements (luminance distributions, correlations of low and high order, edges, occlusions, etc.) are intermixed, and their effects are difficult to disentangle. Thus, there is a need for construction of stimuli in which one or more statistical elements are introduced in a controlled fashion, so that their individual and joint contributions can be analyzed. With this as motivation, we present algorithms to construct synthetic images in which local image statistics—including luminance distributions, pair-wise correlations, and higher-order correlations—are explicitly specified and all other statistics are determined implicitly by maximum-entropy. We then apply this approach to measure the sensitivity of the human visual system to local image statistics and to sample their interactions.

© 2012 Optical Society of America

OCIS Codes
(330.5000) Vision, color, and visual optics : Vision - patterns and recognition
(330.5510) Vision, color, and visual optics : Psychophysics

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: January 5, 2011
Revised Manuscript: December 8, 2011
Manuscript Accepted: December 16, 2011
Published: June 14, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Jonathan D. Victor and Mary M. Conte, "Local image statistics: maximum-entropy constructions and perceptual salience," J. Opt. Soc. Am. A 29, 1313-1345 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-7-1313

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