Method of correcting image signal outputted from linear image se

Details Method of correcting image signal outputted from linear image se Method of correcting image signal outputted from linear image se

1997-06-05

2000-03-07

Boudreau, Leo H.

Facsimile and static presentation processing

Natural color facsimile

Color correction

G03F 308

Patent

active

060347945

ABSTRACT:
Light which bears image information carried by a subject is two-dimensionally read through tricolor separating optical systems with linear image sensors for the three colors R, G, B. Odd- and even-numbered pixel signals outputted from the linear image sensors 1 are alternately read to produce an image signal which comprises a series of pixel signals. The image signal is corrected successively by an offset level corrector, a sensitivity variation corrector, an auxiliary scanning curvature/odd- and even-numbered pixel level difference corrector, a main scanning aberration/magnification corrector, and a luminance-to-density conversion corrector, thereby producing an image signal for producing a high-quality reproduced image.

REFERENCES:
patent: 4996591 (1991-02-01), Kadowaki et al.
patent: 5138443 (1992-08-01), Ikeda et al.
patent: 5680230 (1997-10-01), Kaburagi et al.
patent: 5682443 (1997-10-01), Gouch et al.
patent: 5870142 (1999-03-01), Noda et al.

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