15 May 2017 The schemes and methods for producing of the visual security features used in the color hologram stereography
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Abstract
Visual security elements used in color holographic stereograms - three-dimensional colored security holograms - and methods their production is describes in this article. These visual security elements include color micro text, color-hidden image, the horizontal and vertical flip - flop effects by change color and image. The article also presents variants of optical systems that allow record the visual security elements as part of the holographic stereograms. The methods for solving of the optical problems arising in the recording visual security elements are presented. Also noted perception features of visual security elements for verification of security holograms by using these elements. The work was partially funded under the Agreement with the RF Ministry of Education and Science № 14.577.21.0197, grant RFMEFI57715X0197.
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D. S. Lushnikov, A. Y. Zherdev, S. B. Odinokov, V. V. Markin, A. V. Smirnov, "The schemes and methods for producing of the visual security features used in the color hologram stereography", Proc. SPIE 10233, Holography: Advances and Modern Trends V, 102331K (15 May 2017); doi: 10.1117/12.2264914; https://doi.org/10.1117/12.2264914
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