Phase-retrieval algorithms applied in a 4-f system for optical image encryption - a comparison

Guohai Situ; Jingjuan Zhang

doi:10.1117/12.570836

11 January 2005 Phase-retrieval algorithms applied in a 4-f system for optical image encryption: a comparison

Guohai Situ, Jingjuan Zhang

Proceedings Volume 5642, Information Optics and Photonics Technology; (2005) https://doi.org/10.1117/12.570836
Event: Photonics Asia, 2004, Beijing, China

Abstract

Phase retrieval algorithms based on 4-f system for optical image encryption are compared in respect of the image retrieval quality and the convergence. Simulation results show that enlarging the searching space can decrypt the image with extremely high quality, while employing the searching strategy of modifying both the phase-distributions in the input and the frequency planes can result in much faster convergence for the algorithm.

Citation Download Citation

Guohai Situ and Jingjuan Zhang "Phase-retrieval algorithms applied in a 4-f system for optical image encryption: a comparison", Proc. SPIE 5642, Information Optics and Photonics Technology, (11 January 2005); https://doi.org/10.1117/12.570836

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