20 April 2012 Enhancement of interference-based image encryption using chaotic permutation and phase-blend operation
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Optical Engineering, 51(4), 048201 (2012). doi:10.1117/1.OE.51.4.048201
In conventional interference-based optical encryption schemes, a potential cracker can retrieve partial information (silhouette) of the secret image using only one phase-only mask (POM). We resolve this drawback using a phase-blend operation and piecewise linear chaotic map (PWLCM) to further encode the POMs. One cannot recover a secret image visibly when inverse phase-blend operation and inverse chaotic permutation are not carried out with the correct decryption keys. Chaotic parameters of PWLCM, and random phase-angle function in the phase-blend operation enlarge the key space and improve the security of the proposed system greatly. Numerical simulations and optoelectronic experiments are performed to verify the effectiveness of the proposed scheme.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Qu Wang, Jinyun Zhou, Qing Guo, "Enhancement of interference-based image encryption using chaotic permutation and phase-blend operation," Optical Engineering 51(4), 048201 (20 April 2012). https://doi.org/10.1117/1.OE.51.4.048201

Image encryption

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