The method for testing effectiveness of holographic security devices

Jacek Janucki; Jan Owsik

doi:10.1117/12.578018

29 December 2004 The method for testing effectiveness of holographic security devices

Jacek Janucki, Jan Owsik

Proceedings Volume 5615, Technologies for Optical Countermeasures; (2004) https://doi.org/10.1117/12.578018
Event: European Symposium on Optics and Photonics for Defence and Security, 2004, London, United Kingdom

Abstract

The method for evaluation of holographic security effectiveness has been developed. The use of the Wiener filter based method allows the holograms patterns to be identified from a printed page. Due to elimination of background influence on a correlation function of two analysed images it is possible to estimate a quality factor of a holographic device. The Wiener filter algorithm for numerical analysis of digital images has been proposed. On the basis of correlation analysis the quantitative quality coefficient of the holographic security has been defined.

Citation Download Citation

Jacek Janucki and Jan Owsik "The method for testing effectiveness of holographic security devices", Proc. SPIE 5615, Technologies for Optical Countermeasures, (29 December 2004); https://doi.org/10.1117/12.578018

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