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Bibliographic record number: 488559

Journal

Authors: Žiljak-Vujic, Jana; Žiljak-Stanimirović, Ivana; Pogarčić, Ivan
Title: Hidden information with infrared design
Source: Annals of DAAAM for 2010 & Proceedings of the 21st International DAAAM symposium Intelligent manufacturing&automation : Focus on interdisciplinary solutions / Katalinić, Branko (ed). - Vienna : DAAAM International , 2010. 249-250 (ISBN: 978-3-901509-73-5).
ISSN: 1726-9679
Meeting: International DAAAM symposium intelligent manufacturing&automation : focus on interdisciplinary solutions (21 ; 2010)
Location and date: Zadar, Hrvatska, 20.-23.10.2010.
Keywords: near infrared graphics; Infrared design; hiden information
Abstract:
The article gives an algorithm for near infrared region (NIR) that contains hidden information derived as a vignette in the security printing. The motif is implementation of line solutions for graphics that are designed with colors in the visual spectrum (VS) but with the double property: one picture response in the NIR and the other is seen in the VS (400-700 nm). The algorithm is based on Bezier method with symmetrical development and planned visibility using the specific properties of dyes, their absorption of light in the near infrared spectrum. The goal is to show type that is hidden from the human visual area and is presented in three conditions: completely invisible, transition state, and instrumentally visible under the 1000 nm. Relations and parameters are given for three different color tones, which are also procedures for the development of double images in the security printing.
Type of meeting: Predavanje
Type of presentation in a journal: Other
Type of peer-review: International peer-review
Project / theme: 128-1281957-1956, 128-1281957-1958, 128-1281957-1961
Original language: ENG
Category: Znanstveni
Research fields:
Graphic technology,Information and communication sciences
Full paper text: 488559.12345_19220_19092_symp_1_final.docx (tekst priložen 27. Lis. 2010. u 22:31 sati)
Contrib. to CROSBI by: pogarcic@veleri.hr (pogarcic@veleri.hr), 27. Lis. 2010. u 22:31 sati



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