Methods of protection document formed from latent element located by fractals

Medykovskyy, Mykola; Lipiński, Piotr; Troyan, Oksana; Nazarkevych, Mariya

doi:10.1109/stc-csit.2015.7325434

Cited by 9 publications

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“…During an attempt of duplicating, a raster original structure will not be reproduced with high quality. Besides, with a template being overlaid, a hidden image will not be reproduced and a moire effect will be observed [22].…”

Section: A Methods Of Protecting Printed Documents Based On the Construction Of Latent Elements And Fractal Netsmentioning

confidence: 99%

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An Approach towards the Protection for Printed Documents by Means of Latent Elements with Fractal Grids and Electronic Determination of Its Authenticity

et al. 2020

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An electronic method of protection for printed documents based on which latent elements are formed in a printed way has been developed. The development of security features has been done electronically. Protection using latent elements has been improved by overlapping fractal grids, which allows creation of graphics traps. The printing of designed security elements has been investigated on 15 paper samples. The security elements were printed on an offset printing machine. Prints were copied and compared with originals using the electronic method of pixel-by-pixel comparison based on a peak signal-to-noise ratio (PSNR). The comparison results between originals and their copies are presented in this paper.

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Section: A Methods Of Protecting Printed Documents Based On the Construction Of Latent Elements And Fractal Netsmentioning

confidence: 99%

“…To obtain a copy, charged particles of toner are transferred onto a sheet of paper. An image formed by toner is transferred onto a sheet of paper and fixed as a result of the toner sticking to paper under heating [22].…”

Section: Comparison Of the Quality Of Thin Lines Printed By Offset And Electrophotographymentioning

confidence: 99%