Abstract

The ability to recognize and discriminate colors under full-moon light was measured Color naming was performed at three sizes (0.5°, 2°, and 4°) by the use of one white and six colored chips that spanned the spectrum at two levels of saturation. The results show that correct color recognition is possible under full-moon light. However, the recognition rate depends on a complex interaction between hue, level of saturation, and size of test field. For small fields and desaturated colors, the recognition rate is low. However, for saturated colors, most hues can be recognized at better than chance levels, with red being recognized very accurately.

© 1994 Optical Society of America

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