Abstract

The use of film as a linear storage medium is a relatively new application in the history of photographic emulsion. Drawing on this storage capability of film, we present a novel optical multiplex scheme. Four continuous tone image exposures are each multiplied by a unique spatial carrier, and the resulting exposure products are added sequentially on a single emulsion. The overlapping exposures are stored linearly by controlled photographic processing. Spatial filtering techniques are then applied to separate the image spectra and to retrieve the individual images. Crosstalk and aliasing are avoided by using carriers that properly sample and encode each exposure.

© 1969 Optical Society of America

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