Method and apparatus of encryption of optical images

Details Method and apparatus of encryption of optical images Method and apparatus of encryption of optical images

1987-04-01

1988-10-04

Cangialosi, Salvatore

Cryptography

By modifying optical image

380 10, 380 20, H04L 900

Patent

active

047760133

ABSTRACT:
A method of encoding an optical image comprises: converting the optical iamge to an image grid comprised of an image matrix of pixels each having at least two possible intensity values; providing a master grid comprised of a master matrix of pixels each having at least two possible intensity values; and transmitting, for each pixel location of the image matrix, a pixel intensity value representing the intensity value of the master matrix at the corresponding location, its complement, or a random intensity value, depending on the intensity value of the pixel in the image matrix at the corresponding location. Also described is an apparatus for carrying out the above encoding method.

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