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Proceedings Paper

Optical devices and methods of quality control of security materials and documents with protection from fakes
Author(s): Alexander Gorelenko; Leon Korachkin; Serge Pliska; Helen Shlyk
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Paper Abstract

The protection of security papers and documents from a fake is the important state problem. In a system of Department of Goznak Belarus of the Ministry of Finance of Republic of Belarus the laboratory on development of means of a guard of valuable papers and documents in frameworks URDE "CRYPTOTECH" is created. The responsibilities of a realization of examination of authenticity of valuable papers and documents are assigned to above-stated laboratory. The laboratory of means of a guard is equipped with the modern equipment intended for detail examination of the passports, driver's certificates, identification cards, technical and other documents with a special guard, revealing of indications of a partial fake of the documents. Among them television spectral, comparator lamp of a UF-radiation etc. Equipment is supported program system "VideoScope", which represents a software product permitting to eneter in the computer a videoimages to make their processing, comparison and archiving. The system of a comparison of images is intended for detection of distinctions (differences) between standard and researched by images of object. The comparison can be made by methods of mutual subtraction, addition of images and method of visual overlapping of a researched image with a part standard. In a mode of mutual subtraction an outcome of a comparison is the difference image received for want of subtraction of one image from other. For want of it the most distinguished plots will have color closer to black and white, and least distinguished -- gray. An outcome of full concurrence with be gray image. In a mode of addition of images an outcome will be their sum. For want of it the details of both images will be looked through, that enables of an additional visual comparison of images. The system is intended for a grouping on the certain principle, description and storage of images.

Paper Details

Date Published: 26 August 2004
PDF: 3 pages
Proc. SPIE 5566, Optical Security and Safety, (26 August 2004); doi: 10.1117/12.577151
Show Author Affiliations
Alexander Gorelenko, Cryptotech of Goznak Belarus (Belarus)
Leon Korachkin, Cryptotech of Goznak Belarus (Belarus)
Serge Pliska, Cryptotech of Goznak Belarus (Belarus)
Helen Shlyk, Cryptotech of Goznak Belarus (Belarus)

Published in SPIE Proceedings Vol. 5566:
Optical Security and Safety
Zbigniew Jaroszewicz; Ewa Powichrowska; Mariusz Szyjer, Editor(s)

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