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Joint transform correlator-based encryption system using the Fresnel transform and nonlinear filtering

Author
Vilardy, J.; Millan, M.; Pérez-Cabré, E.
Type of activity
Presentation of work at congresses
Name of edition
VIII Iberoamerican Conference on Optics, XI Latinamerican meeting on Optics, Lasers and Applications.
Date of publication
2013
Presentation's date
2013-07
Book of congress proceedings
RIAO/OPTILAS'2013: Abstracts
DOI
https://doi.org/10.1117/12.2020912 Open in new window
Repository
http://hdl.handle.net/2117/21861 Open in new window
URL
http://www.riaooptilas2013.org/ Open in new window
Abstract
A new optical security system for image encryption based on a nonlinear joint transform correlator (JTC) and Fresnel transform is proposed. A lensless optical encryption system, which is a simplifried version of previous JTCbased encryption systems, produces a complex distribution in the Fresnel domain, whose intensity is captured by a power-law sensor and nonlinearly modified to yield the real-valued encrypted image. The nonlinearity plays an essential role in the decryption system which, in tu...
Citation
Vilardy, J.; Millan, M.; Perez, E. Joint transform correlator-based encryption system using the Fresnel transform and nonlinear filtering. A: RIAO/OPTILAS Iberoamerican Conference on Optics, Latinamerican meeting on Optics Lasers and Applications. "RIAO/OPTILAS'2013: Abstracts". Oporto: 2013.
Keywords
Decryption, Fractional Fourier transform, Fresnel transform, Image encryption, Joint transform correlator, Nonlinear filter, Random phase mask
Group of research
GOAPI - Applied Optics and Image Processing Group

Participants