Color image reading apparatus including color correction means

Details Color image reading apparatus including color correction means Color image reading apparatus including color correction means

1991-05-02

1993-08-17

Coles, Jr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358500, H04N 146

Patent

active

052374017

ABSTRACT:
A color image reading apparatus includes a multi-chip image sensor having a plurality of image sensor units adapted to read a test chart comprising a color slip having a plurality of colors. A processing circuit is provided for automatically calculating color correcting coefficients, respectively, for the plurality of image sensors and storing them in memory. This will reduce problems of color reproducibility among image sensors and among image reading apparatus.

REFERENCES:
patent: 4839722 (1989-06-01), Barry et al.
patent: 4866512 (1989-09-01), Hirosawa et al.
"NEC Technical Report vol. 41, No. 3/1988".

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