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Proceedings Paper

Distortion invariant correlation filters application for quality inspection of master-matrix for security holograms
Author(s): Evgeny Zlokazov; Dmitriy Shaulskiy; Rostislav Starikov; Sergey Odinokov; Alexander Zherdev; Vasiliy Koluchkin; Ivan Shvetsov; Andrey Smirnov
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Paper Abstract

Security holograms (SH) are perspective for document and product authenticity protection due to difficulties of such a protection mark falsification. Mass production of SH uses widespread technology of hot foil or lavsan paper stamping. The quality of holograms significantly depends on perfection of nickel master-matrix that is used in stamping equipment. We represent the method of automatic quality inspection of nickel master-matrix based on digital processing of its surface relief microphotographs. Proposed processing algorithm is based on combination of image spatial frequency analysis and image matching using distortion invariant correlation filters. The results of our method application for real SH master-matrices inspection are shown in this paper.

Paper Details

Date Published: 29 April 2013
PDF: 4 pages
Proc. SPIE 8748, Optical Pattern Recognition XXIV, 87480P (29 April 2013); doi: 10.1117/12.2016375
Show Author Affiliations
Evgeny Zlokazov, National Research Nuclear Univ. MEPhI (Russian Federation)
Dmitriy Shaulskiy, National Research Nuclear Univ. MEPhI (Russian Federation)
Rostislav Starikov, National Research Nuclear Univ. MEPhI (Russian Federation)
Sergey Odinokov, Bauman Moscow State Technical Univ. (Russian Federation)
Alexander Zherdev, Bauman Moscow State Technical Univ. (Russian Federation)
Vasiliy Koluchkin, Bauman Moscow State Technical Univ. (Russian Federation)
Ivan Shvetsov, Bauman Moscow State Technical Univ. (Russian Federation)
Andrey Smirnov, Krypten Research and Production Co. (Russian Federation)


Published in SPIE Proceedings Vol. 8748:
Optical Pattern Recognition XXIV
David Casasent; Tien-Hsin Chao, Editor(s)

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