Image analysis – Color image processing – Image segmentation using color
Patent
1996-10-25
1999-12-07
Vu, Kim Yen
Image analysis
Color image processing
Image segmentation using color
358529, 358530, H04N 154
Patent
active
059996455
ABSTRACT:
A color image forming apparatus having a function for duplicating an image in two desired colors. A color of an image of an original document is read into color elements of a red (R), a green (G), and a blue (B) color, represented by corresponding image signals R, G, and B, respectively. The image processing unit distinguishes between a first case that the read color is a chromatic color and a second case that the read color is an achromatic color. When the color is distinguished as a chromatic color, the image processing unit converts the color into one of two predetermined colors, each defined by color elements C, M, Y, and K corresponding to image signals C, M, Y, and K, respectively. When the color is distinguished as an achromatic color, the image processing unit converts the color into the other one of the two predetermined colors. In accordance with such conversion of colors, the image processing units outputs image processing signals C, M, Y, and K representing corresponding color elements C, M, Y, and K, respectively, defining each of the two predetermined colors to reproduce an image in the two predetermined colors.
REFERENCES:
patent: 5105267 (1992-04-01), Hayashi
patent: 5109274 (1992-04-01), Washio et al.
Ricoh Co. Ltd.
Vu Kim Yen
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