Document monitoring method

Optics: measuring and testing – Document pattern analysis or verification

Reexamination Certificate

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Details

C356S072000, C283S072000, C283S091000, C382S112000

Reexamination Certificate

active

06970235

ABSTRACT:
A method of inspecting documents of value, the method comprises: a) obtaining images of one or more parts of the document from radiation received from that part or those parts of the document (14) in respective different wavelength bands; b) performing an analysis of one of said images to identify a first type of class within which the document of value is included; and c) performing an analysis of another of said images using corresponding predetermined data relating to members of the first type of class identified in step b) so as to determine a second type of class within which the document of value is included.

REFERENCES:
patent: 3679314 (1972-07-01), Musteri
patent: 4723072 (1988-02-01), Naruse
patent: 4875589 (1989-10-01), Lacey et al.
patent: 5498879 (1996-03-01), De Man
patent: 6040584 (2000-03-01), Liu et al.
patent: 6269169 (2001-07-01), Funk et al.
patent: 6661910 (2003-12-01), Jones et al.
patent: 198 40 482 (2000-03-01), None
patent: 0 660 277 (1995-06-01), None
patent: 2 107 911 (1983-05-01), None
patent: WO 85/02928 (1985-07-01), None
patent: WO 99/09382 (1999-02-01), None

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