Facsimile and static presentation processing – Natural color facsimile – Color correction
Reexamination Certificate
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
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Nguyen Madeleine A
LandOfFree
Image processing apparatus and method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image processing apparatus and method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus and method thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3996760