Image reading device capable of color discrimination

Details Image reading device capable of color discrimination Image reading device capable of color discrimination

1991-08-15

1993-11-02

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

358455, 358527, H04N 146, H04N 140

Patent

active

052588319

ABSTRACT:
In an image reading device for reading an image of an original document and outputting a density data indicating the density a color discriminating data indicating the color of each picture element, the image reading device comprising: an image reading section for reading the image with at least two color characteristics and outputting a first image data used to generate the density data and a second image data used to generate the color discriminating data, the second image data having a lower picture element density or a fewer number of density level than the first image data; and a color discriminating section for outputting the color discriminating data on the basis of the second image data.

REFERENCES:
patent: 4553160 (1985-12-01), Yamamoto et al.
patent: 4718040 (1988-01-01), Ayata et al.

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