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

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 info...

Full description

Saved in:

Bibliographic Details
Published in:	Measurement techniques Vol. 66; no. 6; pp. 392 - 397
Main Authors:	Rymov, D. A., Shifrina, A. V., Cheremkhin, P. A., Rodin, V. G., Krasnov, V. V.
Format:	Journal Article
Language:	English
Published:	New York Springer US 01-09-2023 Springer Springer Nature B.V
Subjects:	Analytical Chemistry Characterization and Evaluation of Materials Coding Color Communications systems Decoding High resolution Holograms Holography Image registration Light modulators Liquid crystals Measurement Science and Instrumentation Numerical methods Opticophysical Measurements Physical Chemistry Physics Physics and Astronomy Regularization Streaming media Video communication Video data Video transmission liquid-crystal spatial- temporal light modulators optical information processing optical encoding image registration digital holography phase-only synthetic hologram
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	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.
ISSN:	0543-1972 1573-8906
DOI:	10.1007/s11018-023-02239-0