Optical correlators are efficient optical systems that have gained a wide range of
applications both in image recognition and encryption, due to their special properties that …

A novel nonlinear encryption–decryption system based on a joint transform correlator (JTC)
and the Gyrator transform (GT) for the simultaneous encryption and decryption of multiple …

In this work, we present a new nonlinear joint transform correlator (JTC) architecture in the
Fourier domain (FD) for the encryption and decryption of two simultaneous images. The …

An optical encryption method based on computer generated holograms printing of
photopolymer is presented. Fraunhofer diffraction is performed based on the Gerchberg …

Keeping images safe and secure in data transmission or storage by optical cryptography
has emerged as a revolutionary technology to meet the challenge posed by the evolving …

En esta contribución se discuten los avances más significativos en el campo de la
encriptación de información mediante procesamiento óptico con énfasis en los adelantos en …

In this paper, we perform a study of optical image encryption using triple deterministic phase
mask (TDPE) based on diffractive spherical phase masks array (SPMA). By combining the …