Abstract

By use of multiplex spectrosensitometry, color-film spectral sensitivity distributions can be determined from images having hues and saturations within the gamut of those in natural scenes, rather than from the results of monochromatic exposures. The resulting distributions are affected by the film’s interimage effects in the same way that pictorial images are; the distributions are those that best explain the analyzed images. They are therefore useful in predicting the images to be expected from exposures to energies of known radiometric distributions within the normal pictorial range. The images for analysis are formed by exposure to nearly orthogonal combinations of bands selected (with 50% sampling) from a dispersed spectrum by a single movable mask. The instrument and technique of analysis are adapted from Hadamard spectrometry.

© 1976 Optical Society of America

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