Home // MMEDIA 2019, The Eleventh International Conference on Advances in Multimedia // View article
Authors:
Piyarat Silapasuphakornwong
Masahiro Suzuki
Hideyuki Trii
Kazutake Uehira
Keywords: 3D printer; information hiding; near infrared light; fluorescent dye
Abstract:
This paper provides a novel technique to embed information in objects fabricated with a 3D printer using a near infrared fluorescent dye. To embed information inside an object, regions containing a small amount of fluorescent dye are formed inside the object as it is fabricated, and these regions form a pattern that expresses certain information. When this object is irradiated with near-infrared rays, they pass through the resin but are partly absorbed by the fluorescent dyes, and the fluorescent dyes emit near-infrared fluorescence. Therefore, by using a near-infrared camera, the internal pattern can be captured as a high-contrast image and the embedded information can be nondestructively read out. We conducted experiments to confirm the principle of the technique and demonstrate its feasibility. A sample was prepared using a two head fused deposition modeling-type 3D printer. On the basis of the experimental results, it was determined that a bright and high-contrast image could be taken if the pattern was formed at a depth of 1 mm or less from the surface, demonstrating the feasibility of this technique.
Pages: 55 to 58
Copyright: Copyright (c) IARIA, 2019
Publication date: March 24, 2019
Published in: conference
ISSN: 2308-4448
ISBN: 978-1-61208-697-2
Location: Valencia, Spain
Dates: from March 24, 2019 to March 28, 2019