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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

  • Vol. 18, Iss. 1 — Jan. 1, 2001
  • pp: 1–11

Precision, accuracy, and range of perceived achromatic transparency

Reza Kasrai and Frederick A. A. Kingdom  »View Author Affiliations


JOSA A, Vol. 18, Issue 1, pp. 1-11 (2001)
http://dx.doi.org/10.1364/JOSAA.18.000001


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Abstract

How accurately do human observers perceive the properties of an achromatic transparent filter with both reflective and transmissive components? To address this question, a novel six-luminance stimulus was employed, consisting of three transparent layer luminances set against three background luminances, which satisfied the conventional constraints of perceptual transparency. In one experiment, subjects adjusted one of the three layer luminances to complete the impression of a uniform transparent disk. It was found that the luminance-based formulation of Metelli’s episcotister model and a model based on ratios of Michelson contrasts best predicted the subjects’ settings, which were both accurate and precise. In another experiment, pairs of stimuli selected from a range with various values of the adjustable layer luminance were presented in a series of forced-choice trials. A modified implementation of the pair comparisons method was employed to recover the distribution that describes each subject’s preference pattern. Results showed that there exists a reasonably wide range of stimuli that give rise to at least some degree of perceived transparency.

© 2001 Optical Society of America

OCIS Codes
(330.4060) Vision, color, and visual optics : Vision modeling
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
(330.5510) Vision, color, and visual optics : Psychophysics
(330.7310) Vision, color, and visual optics : Vision

History
Original Manuscript: February 11, 2000
Revised Manuscript: July 3, 2000
Manuscript Accepted: July 3, 2000
Published: January 1, 2001

Citation
Reza Kasrai and Frederick A. A. Kingdom, "Precision, accuracy, and range of perceived achromatic transparency," J. Opt. Soc. Am. A 18, 1-11 (2001)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-18-1-1


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References

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  14. There is disagreement in the literature over the usage of the term ‘forced-choice.’ Some maintain it should be used only if there is a correct answer on every trial, which is not the case in this experiment. The term forced choice is meant here to imply that there are two alternatives on each trial, from which one must be chosen. See N. A. Macmillan, C. D. Creelman, Detection Theory: A User’s Guide (Cambridge U. Press, New York, 1991) for a discussion of this issue.
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