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Images encryption system based on a fractional joint transform correlator and nonlinear filtering

Autor
Vilardy, J.; Millan, M.; Pérez-Cabré, E.
Tipus d'activitat
Article en revista
Revista
Óptica pura y aplicada
Data de publicació
2014
Volum
47
Número
1
Pàgina inicial
35
Pàgina final
41
DOI
https://doi.org/10.7149/OPA.47.1.35 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/22624 Obrir en finestra nova
Resum
A new optical security system for image encryption based on a fractional joint transform correlator and nonlinear filtering is proposed. The position of the lens in the proposed optical encryption setup can be chosen, so that an additional key is introduced in the security system. The distributions at the input and output planes of the encryption system are related by a fractional Fourier transform (FrFT) at a given fractional order that is defined, among other parameters, by the focal length an...
Citació
Vilardy, J.; Millan, M.; Perez, E. Images encryption system based on a fractional joint transform correlator and nonlinear filtering. "Óptica pura y aplicada", 2014, vol. 47, núm. 1, p. 35-41.
Paraules clau
Decryption, Fractional fourier transform, Image encryption, Joint transform correlator, Nonlinear filter, Random phase mask
Grup de recerca
GOAPI - Grup d'Òptica Aplicada i Processament d'Imatge

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