(19)
(11) EP 2 488 371 A1

(12)

(43) Date of publication:
22.08.2012 Bulletin 2012/34

(21) Application number: 09744312.1

(22) Date of filing: 15.10.2009
(51) International Patent Classification (IPC): 
B42D 15/10(2006.01)
G06T 15/00(2011.01)
 H04N 1/405(2006.01)
(86) International application number:
PCT/CH2009/000330
(87) International publication number:
WO 2011/044704 (21.04.2011 Gazette 2011/16)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(71) Applicant: Orell Füssli Sicherheitsdruck AG
8003 Zürich (CH)

(72) Inventors:
  • EICHENBERGER, Martin
    CH-8702 Zollikon (CH)
  • WALDHAUSER, Armin
    CH-8045 Zürich (CH)

(74) Representative: Sutter, Kurt et al
E. Blum & Co. AG Vorderberg 11
8044 Zürich
8044 Zürich (CH)

   


(54) MANUFACTURING SECURITY DOCUMENTS USING 3D SURFACE PARAMETERIZATION AND HALFTONE DITHERING