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Optical Engineering

Color image encryption based on joint fractional Fourier transform correlator
Author(s): Ding Lu; Weimin Jin
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Paper Abstract

In this paper, an optical color image encryption/decryption technology based on joint fractional Fourier transform correlator and double random phase encoding (DRPE) is developed. In this method, the joint fractional power spectrum of the image to be encrypted and the key codes is recorded as the encrypted data. Different from the case with classical DRPE, the same key code was used both in the encryption and decryption. The security of the system is enhanced because of the fractional order as a new added key. This method takes full advantage of the parallel processing features of the optical system, and could optically realize single-channel color image encryption. The experimental results indicate that the new method is feasible.

Paper Details

Date Published: 1 June 2011
PDF: 8 pages
Opt. Eng. 50(6) 068201 doi: 10.1117/1.3590724
Published in: Optical Engineering Volume 50, Issue 6
Show Author Affiliations
Ding Lu, Zhejiang Normal Univ. (China)
Weimin Jin, Zhejiang Normal Univ. (China)

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