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Holographic Encryption of Color Video Stream with 4k Resolution Using Phase Liquid Crystal Light Modulators

  • OPTICOPHYSICAL MEASUREMENTS
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Measurement Techniques Aims and scope

This study examines the use of optical encoding to prevent unauthorized access to various categories of information (including video) during operational transmission. Experimentally implemented holographic coding in spatially incoherent radiation of a 4K color video stream with digital input of information and dynamically changing coding elements-holograms was used to improve the quality of video stream coding and ensure high throughput of the coding system. High-resolution liquid-crystal spatial-temporal light modulators were used to input encoded video information and display holograms. The encoding method is based on registering an optical convolution of the input scene image with the encoding response of the hologram. In this case, individual color channels of each frame of the video stream are encoded in turn. Numerical methods of inverse filtering and regularization were used for decoding. The results of the present studies will be useful in creating a new generation of secure high-resolution video communication systems.

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Authors and Affiliations

  1. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia

    D. A. Rymov, A. V. Shifrina, P. A. Cheremkhin, V. G. Rodin & V. V. Krasnov

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  1. D. A. Rymov
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  2. A. V. Shifrina
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  3. P. A. Cheremkhin
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  4. V. G. Rodin
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  5. V. V. Krasnov
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Correspondence to D. A. Rymov.

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Translated from Izmeritel’naya Tekhnika, No. 6, pp. 21–26, June, 2023. https://doi.org/10.32446/0368-1025it.2023-6-21-26.

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Rymov, D.A., Shifrina, A.V., Cheremkhin, P.A. et al. Holographic Encryption of Color Video Stream with 4k Resolution Using Phase Liquid Crystal Light Modulators. Meas Tech 66, 392–397 (2023). https://doi.org/10.1007/s11018-023-02239-0

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