Color image processing apparatus

Details Color image processing apparatus Color image processing apparatus

1991-12-26

1994-10-04

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Specific image-processing circuitry

358501, 358449, H04N 146, H04N 140

Patent

active

053531302

ABSTRACT:
An original area of a color original placed on an original base is accurately detected. Color component signals of R, G and B generated by a line sensor 1-1 are converted into a lightness component L* and a chromatic component C*. Latch circuits 1-12 through 1-15 use these two components to detect the original area of the color original present on the original base.

REFERENCES:
patent: 4975768 (1990-12-01), Takaragi
patent: 5032904 (1991-07-01), Murai et al.
patent: 5198853 (1993-03-01), Ichihara et al.

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