11 January 2005 Phase-retrieval algorithms applied in a 4-f system for optical image encryption: a comparison
Author Affiliations +
Proceedings Volume 5642, Information Optics and Photonics Technology; (2005); doi: 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.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guohai Situ, 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); doi: 10.1117/12.570836; https://doi.org/10.1117/12.570836
PROCEEDINGS
8 PAGES


SHARE
KEYWORDS
Image quality

Image encryption

Image processing

Image restoration

Fourier transforms

Optical image encryption

Phase retrieval

Back to Top