Color image processing apparatus with linear masking circuit hav

Details Color image processing apparatus with linear masking circuit hav Color image processing apparatus with linear masking circuit hav

1986-12-24

1989-08-01

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

G03F 308, H04N 146

Patent

active

048537683

ABSTRACT:
A color processing apparatus performs the masking process of a color image by receiving a plurality of color component signals, and has a masking circuit for performing a linear masking process for the plurality of color component signals. The masking process utilizes a plurality of coefficients each of which has a particular value. The value of at least one of the coefficients of the masking circuit is varied in accordance with levels of the plurality of color component signals. A signal indicative of an amount of one kind of colorant which is to be recorded prior to the recording of other kinds of colorants can be discriminated, and a signal level which indicates the amount of the other kinds of colorants to be recorded on the same area after the recording of the one kind of colorant is corrected in accordance with the discrimination result.

REFERENCES:
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patent: 3194882 (1965-07-01), Hall
patent: 3324235 (1967-06-01), Kyte
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patent: 4643563 (1987-02-01), Sayanagi
patent: 4682186 (1987-07-01), Sasaki et al.
patent: 4682216 (1987-07-01), Sasaki et al.
patent: 4683492 (1987-07-01), Sugiura et al.
patent: 4758885 (1988-07-01), Sasaki et al.

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