Facsimile and static presentation processing – Natural color facsimile – Color correction
Patent
1997-06-18
1998-12-15
Coles, Edward L.
Facsimile and static presentation processing
Natural color facsimile
Color correction
358501, 358521, 358538, 358463, 358462, 358465, 358464, 358453, G03F 308
Patent
active
058502980
ABSTRACT:
An image processing device forming a reproduced image from a plurality of color recording signals, each of which is generated at a corresponding one of scans on an original image and derived from color digital signals obtained at the corresponding one of the scans, includes a threshold-value generation unit generating a threshold value based on the color digital signals at a first one of the scans, and a background removal unit reducing background noise in the reproduced image by using the threshold value at second and following ones of the scans.
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Transactions of Institute of Electronics, Information and Communication Engineers, Jan., 1992, vol. J-75-D-II, No. 1, pp. 39-47, Satoshi Ohuchi, et al., Segmentation Method for Documents Containing Text/Picture (Screened Halftone, Continuous Tone).
Narahara Kouichi
Ohuchi Satoshi
Coles Edward L.
Lee Cheukfan
Ricoh & Company, Ltd.
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