Abstract

Land, using only two projecting primaries, demonstrated a wide range of hues in “natural image” projections. Nineteen observers, with normal color vision, viewed Land-type projections and identified the hues perceived with a colorimeter. Results indicate that the wide range of hues perceived was the result of a primary induction due to contrast phenomena (“colored shadow” effect) and a secondary distortion toward the memory color of familiar objects.

© 1964 Optical Society of America

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