Method of correcting color image data for obtaining proof image

Details Method of correcting color image data for obtaining proof image Method of correcting color image data for obtaining proof image

1988-09-22

1990-05-15

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 80, H04N 146

Patent

active

049262548

ABSTRACT:
Printable color image data (Y, M, C and K) is subjected, in a first processor (S.sub.1), to a first correction procedure to compensate the same for a first additivity failure which results from the mixing of primary chromatic components (Y, M, and C). The color image data is thereafter subjected, in a second processor (S.sub.2), to a second correction procedure involving compensation for a second additivity failure caused by mixture of primary chromatic components (Y, M and C) with an achromatic component (K). Thereby, color image data (Y.sub.5, M.sub.5 and C.sub.5) is obtained from which a color film approximating the colors that will appear in an ink-based printed reproduction of an original image is obtained. Conversion functions for providing the necessary compensation for the two additivity failures are defined/obtained on the basis of actual densities of a printed version of the color image data and a color film version thereof.

REFERENCES:
patent: 4454536 (1984-06-01), Shimura et al.
patent: 4468692 (1984-08-01), Yamada et al.
patent: 4561016 (1985-12-01), Jung et al.
patent: 4573071 (1986-02-01), Sakamoto
patent: 4639770 (1987-01-01), Jung et al.

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