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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. 4 — Apr. 1, 2001
  • pp: 737–746

Brightness, not luminance, determines transition from the surface-color to the aperture-color mode for colored lights

Keiji Uchikawa, Kowa Koida, Toshihisa Meguro, Yasuki Yamauchi, and Ichiro Kuriki  »View Author Affiliations


JOSA A, Vol. 18, Issue 4, pp. 737-746 (2001)
http://dx.doi.org/10.1364/JOSAA.18.000737


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Abstract

Whether a color stimulus appears in the surface-color or in the aperture-color mode depends on the luminance relationship between the center color stimulus and its surround. We investigated how chromaticity of a color stimulus affected the luminance level at which the appearance of the stimulus changed from the surface-color to the aperture-color mode. Mode estimation points were obtained for 10-cd/m2 color stimuli with different chromaticities presented in the center of a white surround of variable luminance. The color stimuli tended to appear in the aperture-color mode as purity increased, similarly to the increase of the brightness-to-luminance ratio for equal-luminance colors. It was also found that the mode-transition sensitivity function was similar in shape to the brightness sensitivity function for 440–660-m monochromatic light. Our results indicate that brightness is a determining factor for mode transition between the surface-color and the aperture-color modes. We discuss a possible assumption for relationships between brightness and lightness limits of a surface color.

© 2001 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.1720) Vision, color, and visual optics : Color vision
(330.5510) Vision, color, and visual optics : Psychophysics

Citation
Keiji Uchikawa, Kowa Koida, Toshihisa Meguro, Yasuki Yamauchi, and Ichiro Kuriki, "Brightness, not luminance, determines transition from the surface-color to the aperture-color mode for colored lights," J. Opt. Soc. Am. A 18, 737-746 (2001)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-18-4-737

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