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Optics Letters

Optics Letters


  • Vol. 26, Iss. 16 — Aug. 15, 2001
  • pp: 1242–1244

Optical image encryption with multistage and multichannel fractional Fourier-domain filtering

Shutian Liu, Quanlin Mi, and Banghe Zhu  »View Author Affiliations

Optics Letters, Vol. 26, Issue 16, pp. 1242-1244 (2001)

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We present a novel image-encryption algorithm that employs multichannel and multistage fractional Fourier-domain filtering architecture. We perform the encryption and decryption by randomly filtering the spatial frequency of the image and then recombining the information from the algorithm in a multistage fractional Fourier domain with pure random-intensity-encoded masks and their complements in a multichannel scheme. The algorithm can be implemented iteratively in an electro-optical setup. Numerical simulations have verified the validity of the algorithm.

© 2001 Optical Society of America

OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(200.3050) Optics in computing : Information processing

Shutian Liu, Quanlin Mi, and Banghe Zhu, "Optical image encryption with multistage and multichannel fractional Fourier-domain filtering," Opt. Lett. 26, 1242-1244 (2001)

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