Image analysis – Color image processing – Color correction
Reexamination Certificate
2006-09-05
2006-09-05
Chen, Wenpeng (Department: 2624)
Image analysis
Color image processing
Color correction
Reexamination Certificate
active
07103217
ABSTRACT:
Color management which converts internal color appearance space color values to CMYK device values. CMY values are interpolated from a plurality of CMY to color appearance space lookup tables, wherein each CMY table is associated with a specific value of K. A target internal color value is received and one of the plurality of CMY lookup tables is selected based on a lightness value and neutrality of the target internal color value. A CMY value is interpolated from the selected lookup table and the target internal color value. The interpolated CMY value together with the associated K value from the selected table is provided as the converted CMYK color value. Advantageously, the conversion effects control over the output K value in a color appearance space to CMYK conversion. Accordingly, both neutral and non-neutral colors can be reproduced with better accuracy and higher quality.
REFERENCES:
patent: 5481655 (1996-01-01), Jacobs
patent: 5502579 (1996-03-01), Kita et al.
patent: 5508827 (1996-04-01), Po-Chieh
patent: 5553199 (1996-09-01), Spaulding et al.
patent: 5710824 (1998-01-01), Mongeon
patent: 5719956 (1998-02-01), Ogatsu et al.
patent: 5999703 (1999-12-01), Schwartz et al.
patent: 6005968 (1999-12-01), Granger
patent: 6072901 (2000-06-01), Balonon-Rosen et al.
patent: 6118550 (2000-09-01), Hayashi
patent: 6205246 (2001-03-01), Usami
patent: 6281984 (2001-08-01), Decker et al.
patent: 6335800 (2002-01-01), Balasubramanian
patent: 6341175 (2002-01-01), Usami
patent: 6704442 (2004-03-01), Haikin et al.
patent: 7019868 (2006-03-01), Chang et al.
patent: 2001/0033330 (2001-10-01), Garoutte
patent: 2002/0159081 (2002-10-01), Zeng
patent: 2003/0072015 (2003-04-01), Fujino
patent: 2003/0072016 (2003-04-01), Dalrymple et al.
patent: 2005/0082542 (2005-04-01), Sumakeris et al.
patent: 2005/0135672 (2005-06-01), Altenhof-Long et al.
patent: 10136218 (1998-05-01), None
U.S. Appl. 10/740,395 (Altenhof-Long et al.), pending.
Canon Kabushiki Kaisha
Chen Wenpeng
Fitzpatrick ,Cella, Harper & Scinto
LandOfFree
Color appearance space to CMYK mapping does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color appearance space to CMYK mapping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color appearance space to CMYK mapping will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3555943