Interferometric Moire Pattern Encoded Security Holograms with Concealed Phase Object

Kumar, Raj and Aggarwal, A.K. (2007) Interferometric Moire Pattern Encoded Security Holograms with Concealed Phase Object. Optics Communications, 279 (1). pp. 120-123. ISSN 0030-4018

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

This paper describes an interferometry-based scheme for concealing phase objects in a security hologram. The decoding process is based on geometrical moiré technique and requires a key for hologram authenticity verification. Decoding process is straightforward and could be carried out in white light, making it suitable for validation of security holograms. The method is described and experimental results are presented.

Item Type: Article
Uncontrolled Keywords: Security holograms; Optical security; Authenticity verification; Interferometry; Moiré techniques
Subjects: CSIO > Optics
Depositing User: Ms. J Shrivastav
Date Deposited: 03 Apr 2012 12:34
Last Modified: 11 Apr 2012 11:03
URI: http://csioir.csio.res.in/id/eprint/90

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