Method and apparatus for color correcting digitized images

Details Method and apparatus for color correcting digitized images Method and apparatus for color correcting digitized images

1989-08-18

1991-09-03

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 78, H04N 146, G03F 308

Patent

active

050459333

ABSTRACT:
An image processing method for producing color-corrected output color signals in response to respective hue-separated input color signals, such as from the output of a scanner, having a reduced memory requirement for transformation coefficients yet with little sacrifice in transformation accuracy. In a preferred embodiment, transformation coefficients for each of three output color signals are produced having individual bit lengths determined in accordance with a degree of correlation with the respective input color signal. The input color signals are subjected to transformation operations using the stored coefficients.

REFERENCES:
patent: 4634844 (1987-01-01), Sasaki
patent: 4814867 (1989-03-01), Tsuda et al.
patent: 4974070 (1990-11-01), Hock et al.

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