Method of classifying color originals and apparatus thereof

Details Method of classifying color originals and apparatus thereof Method of classifying color originals and apparatus thereof

1988-02-01

1989-05-16

Evans, F. L.

Optics: measuring and testing

By shade or color

356406, 356407, 356404, 355204, 358 75, 364526, G01J 350

Patent

active

048305014

ABSTRACT:
A method and apparatus for classifying color originals into at least color photographs and other colored articles such as color printed articles, letters, handwriting, art graphics or the like by detecting the reflection densities of divisions into which the color original is spatially divided, using light sensors having peak sensitivities at different wavelengths for at least one of the three primary colors. The reflection densities are compared to obtain a difference or a ratio thereof and based on the result of the comparison, the color originals are classified as color photographs or as other colored articles.

REFERENCES:
patent: 4239374 (1980-12-01), Tatsumi et al.

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