Apparatus and method capable of using several sharpened color si

Details Apparatus and method capable of using several sharpened color si Apparatus and method capable of using several sharpened color si

1991-04-10

1993-09-21

Brinich, Stephen

Facsimile and static presentation processing

Natural color facsimile

Color separation

358 37, G03F 308

Patent

active

052473520

ABSTRACT:
An apparatus for sharpening a color image having a multiplicity of color separation signals defining a plurality of color pixels comprising apparatus for generating at least two sharpening signals from the color separation signals and apparatus for combining each of the color separation signals with any collection of the at least two sharpening signals wherein the collection changes throughout the color image.

REFERENCES:
patent: 4335407 (1982-06-01), Atoji et al.
patent: 4672431 (1987-06-01), Cosgrove
patent: 4734763 (1988-03-01), Urabe et al.
patent: 4841362 (1989-06-01), Urabe et al.
patent: 4972256 (1990-10-01), Hirosawa et al.
L. L. Jackson, "Unsharp Masking--Photographic/Electronic", Gaftworld, May-Jun. 1989, vol. 1, pp. 13-22.
R. K. Molla, "Electronic Color Separation", R. K. Printing & Publishing Co., Montgomery, W. Va., 1988, pp. 230-232.
G. Wyszecki et al., "Color Science: Concepts and Methods, Quantitative Data and Formulae", John Wiley & Sons, N.Y., 1989, 2nd edition, pp. 507-510.

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