Optical Encryption System using a Computer Generated Hologram
Journal of the Optical Society of Korea, Vol. 4, Issue 1, pp. 19-22 (2000)
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Abstract
A new image encoding and identification scheme is proposed for security verification by us-ing a CGH(computer generated hologram), random phase mask, and a correlation technique. The encrypted image, which is attached to the security product, is made by multiplying a QP- CGH(quadratic phase CGI) with a random phase function. The random phase function plays a key role when the encrypted image is decrypted. The encrypted image can be optically recovered by a 2-f imaging system and automatically verified for personal identification by a 4-f correlation system. Simulation results show the proposed method can be used for both the reconstruction of an original image and the recognition of an encrypted image.
© 2000 Optical Society of Korea
History
Original Manuscript: August 25, 1999
Published: March 1, 2000
Citation
Jong-Yun Kim, Se-Joon Park, Soo-Joong Kim, Jang-Keun Bae, Yang-Hoi Doh, and Cheol-Su Kim, "Optical Encryption System using a Computer Generated Hologram," J. Opt. Soc. Korea 4, 19-22 (2000)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-4-1-19
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