Printed product, printed product detection method and...

Details Printed product, printed product detection method and... Printed product, printed product detection method and...

2006-03-28

2011-11-08

Do, Anh Hong (Department: 2624)

Image analysis

Color image processing

C382S100000, C382S164000

Reexamination Certificate

active

08055064

ABSTRACT:
This invention implements a printed product capable of embedding a variety of information which are unrecognizable by human eyes in image lines included in a security line drawing without decreasing the artistic effect of printed image lines and authenticating the information on the basis of the Fourier-transformed pattern of the printed image lines. This invention provides an information authenticable printed product having a plurality of line drawings in which an image line includes a unit image line including a plurality of image lines arrayed in parallel along a normal direction, and the normal-direction intervals between the plurality of image lines in the unit image line are set in correspondence with information to be embedded, an authentication method, a method of embedding information in the printed product, and an authentication apparatus.

REFERENCES:
patent: 3908275 (1975-09-01), Shimizu
patent: 6930686 (2005-08-01), Aranda et al.
patent: 07-220018 (1995-08-01), None
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patent: 8-300800 (1996-11-01), None
patent: 11-161757 (1999-06-01), None
patent: 2000-118121 (2000-04-01), None
patent: 2001-88361 (2001-04-01), None
patent: 2003-200647 (2003-07-01), None
patent: 2003-246134 (2003-09-01), None

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