System and method for enhancing color seperation utilizing multi

Details System and method for enhancing color seperation utilizing multi System and method for enhancing color seperation utilizing multi

1995-09-27

1997-06-24

McGraw, Vincent P.

Optics: measuring and testing

By shade or color

With color transmitting filter

250226, 356418, G01J 351

Patent

active

056421974

ABSTRACT:
A digital color scanner capable of high color quality includes a light source, a photosensor, a first color filter, a second color filter, a third color filter, and a fourth color filter. The first, second, and third color filters are positioned in an optical path between the light source and the photosensor so as to enable the photosensor to produce a first, second, and third set of color image data during a first calibration scan. The fourth color filter is moved into and out of the optical path between the light source and the photosensor so as to enable the photosensor to produce a fourth, fifth, and sixth set of color image data during a second calibration scan. A circuit produces a set of color correction values from the first, second, third, fourth, fifth, and sixth sets of color image data.

REFERENCES:
patent: 4652913 (1987-03-01), Saitoh et al.

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