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Optimization of illumination for security hologram authentication.

Vijith, V. A.; George, Akhilesh; Ambadiyil, Sajan; Jha, Avinash Kumar; Prabhu, Radhakrishna

Authors

V. A. Vijith

Akhilesh George

Sajan Ambadiyil

Avinash Kumar Jha



Contributors

Henri Bouma
Editor

Yitzhak Yitzhaky
Editor

Hugo J. Kuijf
Editor

Abstract

Security holograms, diffractive optical elements known for their intricate 3D visuals, are a cornerstone of brand protection. However, their effectiveness hinges on robust authentication methods. This work explores the critical role of illumination in hologram visualization for enhanced authentication. We investigate the impact of illumination angle and capture stage on the clarity of the hologram's visual features. An experimental setup utilizing an LED light source, and a smartphone camera allows for systematic analysis of illumination angles. Laser light is also explored as a potential authentication tool. By combining observations, detailed documentation, and the potential of Artificial Intelligence (AI), this research aims to identify the optimal illumination conditions that maximize hologram visualization, facilitating efficient and reliable authentication workflows. This approach paves the way for improved security in document and product authentication, ultimately strengthening consumer trust and brand reputation.

Citation

VIJITH, V.A., GEORGE, A., AMBADIYIL, S., JHA, A.K. and PRABHU, R. 2024. Optimization of illumination for security hologram authentication. In Bouma, H., Prabhu, R., Yitzhahy, Y. and Kuijf, H.J. (eds.) Advanced materials, biomaterials, and manufacturing technologies for security and defence II: proceedings of the 2024 SPIE Security + defence, 16-20 September 2024, Edinburgh, UK. Proceedings of SPIE, 13206. Bellingham, WA: SPIE [online], paper 1320618. Available from: https://doi.org/10.1117/12.3034230

Presentation Conference Type Conference Paper (published)
Conference Name 2024 SPIE Security + defence
Start Date Sep 16, 2024
End Date Sep 20, 2024
Acceptance Date Nov 13, 2023
Online Publication Date Nov 13, 2024
Publication Date Dec 31, 2024
Deposit Date Jan 9, 2025
Publicly Available Date Jan 10, 2025
Print ISSN 0277-786X
Electronic ISSN 1996-756X
Peer Reviewed Peer Reviewed
Volume 13206
Article Number 1320618
Series Title Proceedings of SPIE
Series Number 13206
Series ISSN 0277-786X; 1996-756X
Book Title Artificial intelligence for security and defence applications II: proceedings of the 2024 SPIE Security + defence, 16-20 September 2024, Edinburgh, UK
ISBN 9781510681200
DOI https://doi.org/10.1117/12.3034230
Keywords Anti-counterfeit technology; Authentication; Brand protection; Colour temperature; Diffraction efficiency; DOVID; Hologram; Security
Public URL https://rgu-repository.worktribe.com/output/2656354

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Copyright Statement
© 2024 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.




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