Optical double-image encryption based on Gaussian apertured reality-preserving fractional Mellin transform

A novel optical double-image encryption scheme based on Gaussian apertured reality-preserving fractional Mellin transform (GARPFrMT) is proposed. In terms of optical image encryption, GARPFrMT has several attractive advantages: (1) The GAPRFrMT can be used to scramble the value of two images simulta...

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Bibliographic Details
Published inJournal of modern optics Vol. 68; no. 14; pp. 753 - 770
Main Authors Wang, Mengmeng, Li, Lu, Duan, Huihong, Xu, Mantao
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 16.08.2021
Taylor & Francis Ltd
Subjects
2D Logistic-Sine-Coupling map
Algorithms
Correlation coefficients
Double-image encryption
Encryption
Gaussian aperture
Luminous intensity
Mellin transforms
nonlinear GARPFrMT
reality-preserving
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Summary:A novel optical double-image encryption scheme based on Gaussian apertured reality-preserving fractional Mellin transform (GARPFrMT) is proposed. In terms of optical image encryption, GARPFrMT has several attractive advantages: (1) The GAPRFrMT can be used to scramble the value of two images simultaneously; (2) GARPFrMT is constructed in diffraction domain to ensure that the ciphertext is real; (3) Owing to the nonlinearity, this transform can ensure that the proposed encryption system can be kept from the potential insecurity; and (4) A Gaussian lens is applied to improve intensity distributions of the output light. Experimental results demonstrate that the proposed algorithm is feasible and robust by a lot of attack analysis, i.e. sensitivity attack analysis (>99.60%), differential attack analysis (NPCR >99.6072 and UACI >33.5681%), entropy values (almost 7.99928), statistical attack (correlation coefficient values are almost 0), noise attack, cropping attack and NIST analysis.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2021.1945696