Facsimile and static presentation processing – Natural color facsimile – Black signal synthesis
Patent
1995-10-17
1998-02-17
Coles, Sr., Edward L.
Facsimile and static presentation processing
Natural color facsimile
Black signal synthesis
358515, 358518, 358455, 358534, G03F 308, H04N 146
Patent
active
057196893
ABSTRACT:
An image processing apparatus for converting a color image into an image of an N (N=2, 3, . . . ) number of colors, i.e., black and other colors, is disclosed. In the image processing apparatus, a gray-component extracting unit extracts a gray component signal from input color image signals, and produces remaining-color-component signals. A black signal generating unit generates a black signal by using the gray component signal and the remaining-color-component signals. A color signal generating unit generates a color signal by using the remaining-color-component signals. The image processing apparatus may further include first print signal generating means for developing a black signal outputted from the black signal generating means into a black dot pattern, second print signal generating means for developing a color signal outputted from the color signal generating means into a color dot pattern, and adjust means for adjusting the print signals outputted from the first and the second print signal generating means so that when a black dot of the black dot pattern and a color dot of the color dot pattern occupy the same dot position, one of the black and the color dots is preferentially used for print.
REFERENCES:
patent: 4614967 (1986-09-01), Sayanagi
patent: 5008742 (1991-04-01), Shigaki et al.
patent: 5161010 (1992-11-01), Birnbaum
patent: 5257116 (1993-10-01), Suzuki
patent: 5315382 (1994-05-01), Tanioka
patent: 5392139 (1995-02-01), Murata
patent: 5428377 (1995-06-01), Stoffel et al.
patent: 5493323 (1996-02-01), Harrington
Coles Sr. Edward L.
Fuji 'Xerox Co., Ltd.
Wallerson Mark
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