Hybrid certificate validation technique based on Fresnel encoding

Kenan Wu; Jiasheng Hu; Xu Wu

doi:10.1117/1.2981561

1 September 2008 Hybrid certificate validation technique based on Fresnel encoding

Kenan Wu, Jiasheng Hu, Xu Wu

Author Affiliations +

Optical Engineering, Vol. 47, Issue 9, 098201 (September 2008). https://doi.org/10.1117/1.2981561

Abstract

An optic-electronic hybrid certificate validation technique based on Fresnel encoding is proposed. A confirming experiment has been carried out. This technique consists of two processes: encoding and decoding. During the encoding process, an original image is encoded by a computer into an encoded image, which is subsequently printed on a certificate. During the decoding process, the encoded image is extracted from the certificate and decoded optically. The experimental result proves the validity and reveals some advantages of our method. Compared with some previous works, more useful original information can be encoded in our method. The security level of our method is also enhanced by importing the Fresnel diffraction range z as another key. This paper also explores practical application of this technique.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Kenan Wu, Jiasheng Hu, and Xu Wu "Hybrid certificate validation technique based on Fresnel encoding," Optical Engineering 47(9), 098201 (1 September 2008). https://doi.org/10.1117/1.2981561

Published: 1 September 2008

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