Adaptive shift of visual sensitivity balance under ambient illuminant change
JOSA A, Vol. 15, Issue 9, pp. 2263-2274 (1998)
http://dx.doi.org/10.1364/JOSAA.15.002263
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Abstract
We examined the relationship between the ambient illuminant chromaticity and changes in the sensitivity balance of the visual system, using illuminants of various chromaticities. The sensitivity of observers was measured in a room with a variable-chromaticity illuminant. The observer’s state of chromatic adaptation was measured with unique-white settings. Our results showed that the change in visual sensitivity has a nonlinear correlation with the change in illuminant chromaticity; chromatic adaptation was nearly complete for desaturated illuminants, but the degree of chromatic adaptation became worse as the illuminant became more saturated. We defined a new index, relative cone weights, which represents this relationship well. To measure the role of chromatic induction from the immediate-surround area of the matching stimulus, we performed additional experiments by presenting the test inside a colored or black immediate surround. The results showed that the unique-white settings were not disturbed by the change in immediate-surround color. Our results imply that the room illuminant chromaticity was the primary factor in changing the observer’s state of chromatic adaptation.
© 1998 Optical Society of America
[Optical Society of America ]
OCIS Codes
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(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
(330.7310) Vision, color, and visual optics : Vision
(330.7320) Vision, color, and visual optics : Vision adaptation
Citation
Ichiro Kuriki and Keiji Uchikawa, "Adaptive shift of visual sensitivity balance under ambient illuminant change," J. Opt. Soc. Am. A 15, 2263-2274 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-9-2263
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