期刊
OPTICAL REVIEW
卷 25, 期 1, 页码 46-55出版社
OPTICAL SOC JAPAN
DOI: 10.1007/s10043-017-0390-3
关键词
Compressed sensing; Fractional wavelet transform; Three-dimension chaos; Phase-shifting interference; Hologram
类别
资金
- National Science Foundation of China (NSFC) [61405130, 61320106015]
In this paper, a novel optical image encryption system combining compressed sensing with phase-shifting interference in fractional wavelet domain is proposed. To improve the encryption efficiency, the volume data of original image are decreased by compressed sensing. Then the compacted image is encoded through double random phase encoding in asymmetric fractional wavelet domain. In the encryption system, three pseudo-random sequences, generated by three-dimensional chaos map, are used as the measurement matrix of compressed sensing and two random-phase masks in the asymmetric fractional wavelet transform. It not only simplifies the keys to storage and transmission, but also enhances our cryptosystem nonlinearity to resist some common attacks. Further, holograms make our cryptosystem be immune to noises and occlusion attacks, which are obtained by two-step-only quadrature phase-shifting interference. And the compression and encryption can be achieved in the final result simultaneously. Numerical experiments have verified the security and validity of the proposed algorithm.
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