Image processing apparatus and method of controlling the same

Details Image processing apparatus and method of controlling the same Image processing apparatus and method of controlling the same

2008-05-28

2011-11-22

Lee, John (Department: 2624)

Image analysis

Applications

C382S209000, C382S218000, C382S298000, C348S116000, C345S698000

Reexamination Certificate

active

08064636

ABSTRACT:
To accurately extract embedded information from a document image using line spacing watermark, an image processing apparatus for extracting watermark information includes an input unit which inputs a document image as image data, an image reduction unit which generates, from the image data, reduced image data reduced in the first direction, a detection unit which scans the reduced image data in the second direction and detects the length of a blank region as line spacing information, and an extraction unit which extracts watermark information embedded in the document image based on the line spacing information.

REFERENCES:
patent: 5668891 (1997-09-01), Fan et al.
patent: 6983056 (2006-01-01), Amano
patent: 7209572 (2007-04-01), Iwamura et al.
patent: 7260238 (2007-08-01), Iwamura et al.
patent: 7269274 (2007-09-01), Iwamura et al.
patent: 7320138 (2008-01-01), Wakao et al.
patent: 2002/0172398 (2002-11-01), Hayashi
patent: 2003/0123698 (2003-07-01), Murakami
patent: 2004/0057619 (2004-03-01), Lim et al.
patent: 2006/0209348 (2006-09-01), Tabata
patent: 2006/0280515 (2006-12-01), Harada
patent: 2007/0025787 (2007-02-01), Harada
patent: 2007/0127771 (2007-06-01), Kaneda et al.
Kineo Matsui, “Basics of a Digital Watermark,” Morikita Publishing Co., Ltd., pp. 198-199, 1998 (ISBN:4-627-82551-X).

Affiliated with

Also associated with

Rating

Image processing apparatus and method of controlling the same 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 of controlling the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing apparatus and method of controlling the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4271799