Method of and apparatus for tint generation and color separation

Details Method of and apparatus for tint generation and color separation Method of and apparatus for tint generation and color separation

1987-03-17

1989-07-11

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, G03F 308, H04N 146

Patent

active

048476897

ABSTRACT:
An original image in the form of a negative is scanned and converted into pixel data. The resultant data is compared with a predetermined threshold level value to discriminate pixels constituting the contour lines of the scanned image which are thickened to connect line gaps and form closed regions with corresponding first run-length data generated. Colors corresponding to desired tints are designated for each region and corresponding code data is associated with the run-length data to form second run-length data. The color code is converted into halftone-dot percentages and the photosensitive material is exposed to one or more color separations forming the desired tint to produce a tinted recorded image.

REFERENCES:
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patent: 4189744 (1980-02-01), Stern
patent: 4301469 (1981-11-01), Modeen et al.
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patent: 4553172 (1985-11-01), Yamada et al.
patent: 4646355 (1987-02-01), Petrick et al.
patent: 4683500 (1987-07-01), Kitamura et al.
patent: 4692796 (1987-09-01), Yamada et al.
patent: 4775886 (1988-10-01), Hirosawa
Miles Southworth, Pocket Guide to Color Reproduction, second edition, Graphic Arts Publishing Company, Livonia, New York, 1987, p. 104, "tint".

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