Optimization of encrypted holograms in optical security systems

Mitsuhiro Yamazaki; Junji Ohtsubo

doi:10.1117/1.1334947

1 January 2001 Optimization of encrypted holograms in optical security systems

Mitsuhiro Yamazaki, Junji Ohtsubo

Optical Engineering, Vol. 40, Issue 1, (January 2001). https://doi.org/10.1117/1.1334947

The method of the optimization for a binary phase hologram used in a security system is proposed. The hologram is made by a joint Fourier transform method and a simulated annealing technique is used for the optimization. A hologram of a fingerprint image with a random key reference is successfully optimized and almost the same image quality as the original one is obtained as a decoded image by the proposed method. The usefulness of the method in an optical security system is also discussed.

©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Mitsuhiro Yamazaki and Junji Ohtsubo "Optimization of encrypted holograms in optical security systems," Optical Engineering 40(1), (1 January 2001). https://doi.org/10.1117/1.1334947

Published: 1 January 2001

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