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

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