Construction method of three-dimensional information for image decryption based on the scalar diffraction theory

doi:10.7523/j.issn.2095-6134.2012.6.006

Abstract

Abstract: Construction method of three-dimensional (3D) information with judicious choices of phase retardation is proposed to improve the decryption quality. The simple 3D information can be constructed with multiple two-dimensional distribution functions perpendicular to the axis, in both the cases of off-line and in-line. Optical 3D information encryption is performed based on phase extraction algorithm. Computer simulations show that the decryption quality declines in the in-line constructions compared with that in the off-line ones. Schemes for the phase retardation setting are provided with the analysis of respective constraint conditions.

Key words: information security, optical encryption, construction of three-dimensional information, phase retardation

CLC Number:

O438

FU Chang-Ming, YANG Yu-Hua, LI Tuo, CHEN Yue-Dong, CHENG Dong, WANG Ya-Li, SHI Yi-Shi. Construction method of three-dimensional information for image decryption based on the scalar diffraction theory[J]. , 2012, (6): 757-766.

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