What Color is Gray?

Jeannine V. Lamar, J. J. Simac, G. D. Haas

Expert InsightsPublished 1972

If a black-and-white image is converted to a chromatic image, each shade of gray in the original becomes a different color in the pseudocolor transformation. The color in which gray is shown in the final image is a function of the densities of corresponding locations in the separations, the spectral content of the exposure light sources, and the exposures used during successive printing, in register, of the separations on color material. This paper describes the problems encountered and the techniques developed for generating separations on the Stromberg DatagraphiX 4060. 11 pp. Ref.

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Lamar, Jeannine V., J. J. Simac, and G. D. Haas, What Color is Gray? Santa Monica, CA: RAND Corporation, 1972. https://www.rand.org/pubs/papers/P4804.html.
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