Abstract
A novel fully phase color image encryption/decryption scheme based on joint
fractional Fourier transform correlator (JFRTC) and phase retrieval algorithm (PRA)
is proposed. The security of the system is enhanced by 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 system and operation procedures are simplified. The simulation
results of a color image indicate that the new method provides efficient solutions
with a strong sense of security.
© 2011 Chinese Optics Letters
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