Open AccessComplementary computer generated holography for aesthetic watermarking
Author(s) -
Christophe Martinez,
Olivier Lemonnier,
Fabien Laulagnet,
A. Fargeix,
Florent Tissot,
Marie Françoise Armand
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.005547
Subject(s) - holography , optics , binary number , decoding methods , digital watermarking , lithography , computer science , computer graphics (images) , artificial intelligence , physics , image (mathematics) , algorithm , mathematics , arithmetic
We present herein an original solution for the watermarking of holograms in binary graphic arts without unaesthetic diffractive effect. It is based on the Babinet principle of complementary diffractive structures adapted to Lohmann-type computer generated holograms. We introduce the concept and demonstrate its interest for anti-counterfeiting applications with the decoding of a hidden data matrix. A process of thermal lithography is used for the manufacturing of binary graphic arts containing complementary computer generated holograms.