Image analysis – Image transformation or preprocessing – Fourier transform
Reexamination Certificate
2006-08-15
2006-08-15
Wu, Jingge (Department: 2624)
Image analysis
Image transformation or preprocessing
Fourier transform
C382S274000, C283S072000
Reexamination Certificate
active
07092583
ABSTRACT:
A method and apparatus are disclosed for determining the authenticity of secured documents which include an authentication element of the type which, when excited with radiation of a specific excitation wavelength, emits radiation which can be detected by a detection unit and evaluated by an evaluating unit. The intensity profile of the emitted radiation is determined in a specified wavelength range over a predetermined measuring period after excitation and analyzed to determine authenticity of the secured document.
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European Search Report for EP 02 00 5012 dated Apr. 28, 2004.
Ahlers Benedikt
Bailleu Anett
Franz-Burgholz Arnim
Muth Oliver
Paeschke Manfred
Azarian Seyed
Bundesdruckerei GmbH
Darby & Darby
Wu Jingge
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