Image processing apparatus and method thereof

Details Image processing apparatus and method thereof Image processing apparatus and method thereof

2003-07-07

2008-08-12

Nguyen, Madeleine A (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S001900, C382S252000

Reexamination Certificate

active

07411707

ABSTRACT:
Even when a color difference diffusion (CD) method which allows high-speed color separation is used, it is difficult to attain preferred color reproduction corresponding to various user's requirements using a small-scale circuit. Hence, a color converter color-converts input image data using a 3D table selected from a plurality of 3D tables, and an interpolation process. A quantization processor obtains error-corrected data by adding error data to the color-converted image data. A dot pattern is selected based on the error-corrected data. The selected dot pattern is output to a print section. The error data is obtained by calculating the difference between a predetermined value corresponding to the dot pattern, and the error-corrected data. The error data is diffused to surrounding pixels.

REFERENCES:
patent: 5801855 (1998-09-01), Ohta
patent: 6215561 (2001-04-01), Kakutani
patent: 6330075 (2001-12-01), Ishikawa
patent: 6373990 (2002-04-01), Ushida et al.
patent: 6415065 (2002-07-01), Miyake
patent: 6543870 (2003-04-01), Kakutani
patent: 6721063 (2004-04-01), Harrington
patent: 6814420 (2004-11-01), Fujita et al.
patent: 2001/0035966 (2001-11-01), Ohta
patent: 2002/0054354 (2002-05-01), Fukao
patent: 2002/0140652 (2002-10-01), Suzuki et al.
patent: 2005/0031199 (2005-02-01), Ben-Chorin et al.
patent: 2006/0187507 (2006-08-01), Konno et al.
patent: 11-55535 (1996-02-01), None
patent: 08-237497 (1996-09-01), None
patent: 2001-171182 (2001-06-01), None

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