Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2011-06-21
2011-06-21
Lee, Thomas D (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S001180, C358S474000
Reexamination Certificate
active
07965421
ABSTRACT:
A show-through reduction method is disclosed. The method is designed to deal with both light and severe show-through. The method focuses mostly on text documents, with characters possibly appearing in multiple gray levels, although the method can also be extended to color documents. As in the prior art, the front and back pages are processed in pairs. However, no perfect page alignment is assumed here, since we are dealing with real images. Instead, a front and back registration is performed as the first step before the pages are further analyzed. In this method, we are aligning the front page content with its show-through appearing in the back side, and the back page content with its show-through appearing in the front side. Once the two sides are aligned, masks are generated for both sides to differentiate severe show-through and light color content regions. Finally, different TRCs are applied to different regions. The show-through is reduced and the page contents are retained.
REFERENCES:
patent: 4673285 (1987-06-01), Shogren
patent: 4734742 (1988-03-01), Klumpp et al.
patent: 4743974 (1988-05-01), Lockwood
patent: 4967233 (1990-10-01), Buchar
patent: 5463451 (1995-10-01), Acquaviva et al.
patent: 5646744 (1997-07-01), Knox
patent: 6101283 (2000-08-01), Knox
patent: 6227725 (2001-05-01), Ancin et al.
patent: 6288798 (2001-09-01), Sharma
patent: 6877659 (2005-04-01), Abramsohn
patent: 7145697 (2006-12-01), Sharma et al.
patent: 7773273 (2010-08-01), Jeong
Gonzalez, Rafael C., Richard E. Woods, Digital Image Processing, pp. 518-519, 549, Addison-Wesley Publishing Company, Inc., (US) 1992.
Eschbach Reiner
Fan Zhigang
Maltz Martin S.
Stinehour Judith
Brinich Stephen M
Fay Sharpe LLP
Lee Thomas D
Xerox Corporation
LandOfFree
Show-through reduction method and system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Show-through reduction method and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Show-through reduction method and system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2648661