Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2007-04-23
2011-12-27
Poon, King (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003060, C358S003200, C358S003100, C358S002100
Reexamination Certificate
active
08085438
ABSTRACT:
A new method of creating fluorescent color images visible under UV light is proposed, which relies on fluorescent colorants obtained by superposing fluorescent ink dots, on juxtaposed halftoning, and on mapping the gamut of the image to be reproduced into the gamut of the fluorescent colorants. The resulting color images are invisible under daylight and have, under UV light, a high resemblance with the original images. Applications comprises the protection of security documents and valuable articles, as well as publicity, fashion and night life, where fluorescent images viewed in the dark under UV illumination have a strongly appealing effect.
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Chosson Sylvain
Donzé Philipp
Hersch Roger D.
Ecole Polytechnique Federale de Lausanne (EPPL)
Hon Ming
Poon King
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